./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursive-simple/fibo_5-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:05:16,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:05:16,339 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:05:16,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:05:16,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:05:16,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:05:16,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:05:16,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:05:16,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:05:16,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:05:16,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:05:16,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:05:16,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:05:16,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:05:16,384 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:05:16,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:05:16,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:05:16,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:05:16,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:05:16,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:05:16,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:05:16,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:05:16,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:05:16,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:05:16,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:05:16,389 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:05:16,389 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:05:16,389 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:05:16,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:05:16,389 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:05:16,389 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:05:16,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:05:16,390 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:05:16,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:05:16,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:05:16,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:05:16,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:05:16,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:05:16,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:05:16,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:05:16,391 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:05:16,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:05:16,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:05:16,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:05:16,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2024-11-22 23:05:16,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:05:16,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:05:16,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:05:16,618 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:05:16,618 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:05:16,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-11-22 23:05:17,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:05:18,035 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:05:18,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-11-22 23:05:18,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a742251ea/8daf0790e89045ccbd87f2099bc17245/FLAG73ff7c614 [2024-11-22 23:05:18,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a742251ea/8daf0790e89045ccbd87f2099bc17245 [2024-11-22 23:05:18,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:05:18,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:05:18,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:05:18,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:05:18,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:05:18,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113da66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18, skipping insertion in model container [2024-11-22 23:05:18,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,089 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:05:18,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:05:18,235 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:05:18,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:05:18,257 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:05:18,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18 WrapperNode [2024-11-22 23:05:18,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:05:18,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:05:18,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:05:18,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:05:18,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,279 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-22 23:05:18,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:05:18,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:05:18,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:05:18,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:05:18,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,296 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]. [2024-11-22 23:05:18,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,296 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,298 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,299 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:05:18,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:05:18,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:05:18,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:05:18,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (1/1) ... [2024-11-22 23:05:18,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:05:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:18,344 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) [2024-11-22 23:05:18,353 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 [2024-11-22 23:05:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:05:18,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:05:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:05:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:05:18,391 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-22 23:05:18,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-22 23:05:18,431 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:05:18,433 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:05:18,510 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-22 23:05:18,512 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:05:18,522 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:05:18,522 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 23:05:18,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:18 BoogieIcfgContainer [2024-11-22 23:05:18,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:05:18,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:05:18,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:05:18,530 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:05:18,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:05:18" (1/3) ... [2024-11-22 23:05:18,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c69ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:05:18, skipping insertion in model container [2024-11-22 23:05:18,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:18" (2/3) ... [2024-11-22 23:05:18,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c69ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:05:18, skipping insertion in model container [2024-11-22 23:05:18,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:18" (3/3) ... [2024-11-22 23:05:18,536 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-11-22 23:05:18,562 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:05:18,562 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-22 23:05:18,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:05:18,630 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;@bd9a221, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:05:18,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 23:05:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 23:05:18,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:05:18,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:18,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:18,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:18,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1842216079, now seen corresponding path program 1 times [2024-11-22 23:05:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516574673] [2024-11-22 23:05:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:18,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:18,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516574673] [2024-11-22 23:05:18,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516574673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:18,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:18,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:05:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018110198] [2024-11-22 23:05:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:18,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:05:18,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:05:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:05:18,800 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:18,833 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-22 23:05:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:05:18,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 23:05:18,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:18,846 INFO L225 Difference]: With dead ends: 38 [2024-11-22 23:05:18,846 INFO L226 Difference]: Without dead ends: 24 [2024-11-22 23:05:18,848 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 [2024-11-22 23:05:18,851 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:18,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:18,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-22 23:05:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-22 23:05:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-22 23:05:18,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-22 23:05:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:18,877 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-22 23:05:18,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-22 23:05:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:05:18,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:18,878 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:18,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:05:18,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:18,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1274123662, now seen corresponding path program 1 times [2024-11-22 23:05:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648066935] [2024-11-22 23:05:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:18,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648066935] [2024-11-22 23:05:18,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648066935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:18,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:18,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382076086] [2024-11-22 23:05:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:18,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:18,929 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:18,983 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-22 23:05:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 23:05:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:18,984 INFO L225 Difference]: With dead ends: 24 [2024-11-22 23:05:18,984 INFO L226 Difference]: Without dead ends: 22 [2024-11-22 23:05:18,984 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 [2024-11-22 23:05:18,985 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:18,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-22 23:05:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-22 23:05:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-22 23:05:18,991 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-22 23:05:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:18,991 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-22 23:05:18,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-22 23:05:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 23:05:18,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:18,993 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:18,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:05:18,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:18,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash 572400255, now seen corresponding path program 1 times [2024-11-22 23:05:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:18,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143523452] [2024-11-22 23:05:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 23:05:19,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143523452] [2024-11-22 23:05:19,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143523452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:19,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:19,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856224218] [2024-11-22 23:05:19,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:19,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:19,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:19,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:19,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:19,111 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:19,148 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-22 23:05:19,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-22 23:05:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:19,149 INFO L225 Difference]: With dead ends: 34 [2024-11-22 23:05:19,149 INFO L226 Difference]: Without dead ends: 32 [2024-11-22 23:05:19,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:19,150 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:19,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-22 23:05:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-22 23:05:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 23:05:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-22 23:05:19,162 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2024-11-22 23:05:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:19,163 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-22 23:05:19,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-22 23:05:19,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:05:19,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:19,165 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:19,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:05:19,166 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:19,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash 576376328, now seen corresponding path program 1 times [2024-11-22 23:05:19,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:19,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487299396] [2024-11-22 23:05:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:19,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:05:19,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:19,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487299396] [2024-11-22 23:05:19,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487299396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:19,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971588873] [2024-11-22 23:05:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:19,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:19,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:19,296 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) [2024-11-22 23:05:19,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:05:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 23:05:19,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:19,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:05:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971588873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:19,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-22 23:05:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773292212] [2024-11-22 23:05:19,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:19,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:05:19,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:05:19,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:19,544 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:19,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:19,858 INFO L93 Difference]: Finished difference Result 126 states and 180 transitions. [2024-11-22 23:05:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:05:19,859 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2024-11-22 23:05:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:19,860 INFO L225 Difference]: With dead ends: 126 [2024-11-22 23:05:19,860 INFO L226 Difference]: Without dead ends: 93 [2024-11-22 23:05:19,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-22 23:05:19,861 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 113 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:19,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 199 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-22 23:05:19,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2024-11-22 23:05:19,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-22 23:05:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2024-11-22 23:05:19,877 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2024-11-22 23:05:19,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:19,878 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2024-11-22 23:05:19,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:19,878 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2024-11-22 23:05:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:05:19,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:19,879 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:19,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 23:05:20,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:20,084 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:20,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1418214692, now seen corresponding path program 2 times [2024-11-22 23:05:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560121141] [2024-11-22 23:05:20,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:20,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:20,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:20,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:05:20,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:20,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560121141] [2024-11-22 23:05:20,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560121141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:20,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096381825] [2024-11-22 23:05:20,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:20,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:20,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:20,173 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) [2024-11-22 23:05:20,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:05:20,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:20,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:20,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 23:05:20,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:05:20,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096381825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:20,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-22 23:05:20,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015865770] [2024-11-22 23:05:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:20,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:05:20,242 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:20,285 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2024-11-22 23:05:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:20,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-22 23:05:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:20,287 INFO L225 Difference]: With dead ends: 101 [2024-11-22 23:05:20,287 INFO L226 Difference]: Without dead ends: 100 [2024-11-22 23:05:20,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:05:20,289 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:20,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-22 23:05:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2024-11-22 23:05:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2024-11-22 23:05:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2024-11-22 23:05:20,303 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 30 [2024-11-22 23:05:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:20,303 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2024-11-22 23:05:20,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2024-11-22 23:05:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:05:20,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:20,304 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:20,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:20,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:20,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:20,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:20,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1014982419, now seen corresponding path program 1 times [2024-11-22 23:05:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:20,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183506922] [2024-11-22 23:05:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:05:20,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:20,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183506922] [2024-11-22 23:05:20,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183506922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:20,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025900238] [2024-11-22 23:05:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:20,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:20,610 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) [2024-11-22 23:05:20,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:05:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:20,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:20,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:20,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:05:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025900238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:20,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:20,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 17 [2024-11-22 23:05:20,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408625430] [2024-11-22 23:05:20,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:20,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 23:05:20,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 23:05:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-22 23:05:20,854 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:21,322 INFO L93 Difference]: Finished difference Result 270 states and 420 transitions. [2024-11-22 23:05:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 23:05:21,323 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2024-11-22 23:05:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:21,325 INFO L225 Difference]: With dead ends: 270 [2024-11-22 23:05:21,325 INFO L226 Difference]: Without dead ends: 192 [2024-11-22 23:05:21,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:05:21,330 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 103 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:21,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 260 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:21,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-22 23:05:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2024-11-22 23:05:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 124 states have internal predecessors, (137), 20 states have call successors, (20), 5 states have call predecessors, (20), 12 states have return successors, (89), 30 states have call predecessors, (89), 19 states have call successors, (89) [2024-11-22 23:05:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 246 transitions. [2024-11-22 23:05:21,370 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 246 transitions. Word has length 31 [2024-11-22 23:05:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:21,370 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 246 transitions. [2024-11-22 23:05:21,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 246 transitions. [2024-11-22 23:05:21,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 23:05:21,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:21,373 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:21,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 23:05:21,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:21,574 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:21,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1600174322, now seen corresponding path program 1 times [2024-11-22 23:05:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085471941] [2024-11-22 23:05:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:21,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-22 23:05:21,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:21,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085471941] [2024-11-22 23:05:21,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085471941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:21,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:21,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:21,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920869620] [2024-11-22 23:05:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:21,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:21,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:21,659 INFO L87 Difference]: Start difference. First operand 160 states and 246 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) [2024-11-22 23:05:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:21,714 INFO L93 Difference]: Finished difference Result 174 states and 268 transitions. [2024-11-22 23:05:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:21,719 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 44 [2024-11-22 23:05:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:21,724 INFO L225 Difference]: With dead ends: 174 [2024-11-22 23:05:21,724 INFO L226 Difference]: Without dead ends: 173 [2024-11-22 23:05:21,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:21,725 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:21,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-22 23:05:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-22 23:05:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 132 states have (on average 1.0833333333333333) internal successors, (143), 129 states have internal predecessors, (143), 21 states have call successors, (21), 5 states have call predecessors, (21), 12 states have return successors, (95), 32 states have call predecessors, (95), 20 states have call successors, (95) [2024-11-22 23:05:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 259 transitions. [2024-11-22 23:05:21,742 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 259 transitions. Word has length 44 [2024-11-22 23:05:21,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:21,742 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 259 transitions. [2024-11-22 23:05:21,742 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) [2024-11-22 23:05:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 259 transitions. [2024-11-22 23:05:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 23:05:21,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:21,745 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:21,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 23:05:21,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:21,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash 661403234, now seen corresponding path program 1 times [2024-11-22 23:05:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615167798] [2024-11-22 23:05:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-22 23:05:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615167798] [2024-11-22 23:05:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615167798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638905816] [2024-11-22 23:05:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:21,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:21,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:21,820 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:21,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:05:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:21,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:05:21,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 69 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 23:05:22,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 69 proven. 72 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 23:05:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638905816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:22,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:22,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 22 [2024-11-22 23:05:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219693371] [2024-11-22 23:05:22,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 23:05:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 23:05:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:05:22,182 INFO L87 Difference]: Start difference. First operand 167 states and 259 transitions. Second operand has 22 states, 20 states have (on average 3.85) internal successors, (77), 16 states have internal predecessors, (77), 11 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 23:05:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:22,596 INFO L93 Difference]: Finished difference Result 308 states and 492 transitions. [2024-11-22 23:05:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 23:05:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 16 states have internal predecessors, (77), 11 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 67 [2024-11-22 23:05:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:22,598 INFO L225 Difference]: With dead ends: 308 [2024-11-22 23:05:22,598 INFO L226 Difference]: Without dead ends: 158 [2024-11-22 23:05:22,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=393, Invalid=1167, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 23:05:22,602 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 254 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:22,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 130 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-22 23:05:22,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 147. [2024-11-22 23:05:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 115 states have internal predecessors, (125), 18 states have call successors, (18), 6 states have call predecessors, (18), 11 states have return successors, (34), 25 states have call predecessors, (34), 17 states have call successors, (34) [2024-11-22 23:05:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 177 transitions. [2024-11-22 23:05:22,621 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 177 transitions. Word has length 67 [2024-11-22 23:05:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:22,621 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 177 transitions. [2024-11-22 23:05:22,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.85) internal successors, (77), 16 states have internal predecessors, (77), 11 states have call successors, (17), 7 states have call predecessors, (17), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 23:05:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 177 transitions. [2024-11-22 23:05:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 23:05:22,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:22,623 INFO L215 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:22,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:22,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:22,828 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:22,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2005517529, now seen corresponding path program 1 times [2024-11-22 23:05:22,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:22,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113163377] [2024-11-22 23:05:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:22,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-22 23:05:22,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:22,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113163377] [2024-11-22 23:05:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113163377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:22,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78092504] [2024-11-22 23:05:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:22,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:22,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:22,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:05:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:22,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:22,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:05:23,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 23:05:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78092504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:23,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:23,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 13] total 16 [2024-11-22 23:05:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516202315] [2024-11-22 23:05:23,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:23,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 23:05:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 23:05:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:05:23,207 INFO L87 Difference]: Start difference. First operand 147 states and 177 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 10 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-22 23:05:23,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:23,338 INFO L93 Difference]: Finished difference Result 213 states and 256 transitions. [2024-11-22 23:05:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 23:05:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 10 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2024-11-22 23:05:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:23,339 INFO L225 Difference]: With dead ends: 213 [2024-11-22 23:05:23,339 INFO L226 Difference]: Without dead ends: 88 [2024-11-22 23:05:23,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2024-11-22 23:05:23,340 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 92 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:23,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 167 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-22 23:05:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2024-11-22 23:05:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 68 states have internal predecessors, (72), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 23:05:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2024-11-22 23:05:23,346 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 56 [2024-11-22 23:05:23,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:23,346 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2024-11-22 23:05:23,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 10 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-22 23:05:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2024-11-22 23:05:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-22 23:05:23,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:23,347 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:23,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:23,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:23,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:23,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash -587569672, now seen corresponding path program 2 times [2024-11-22 23:05:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:23,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148394334] [2024-11-22 23:05:23,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:23,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:23,566 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:23,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-22 23:05:23,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:23,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148394334] [2024-11-22 23:05:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148394334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410263347] [2024-11-22 23:05:23,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:23,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:23,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:23,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:23,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:05:23,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:23,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:23,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 23:05:23,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-22 23:05:23,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-22 23:05:23,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410263347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:23,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:23,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-22 23:05:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987578454] [2024-11-22 23:05:23,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:23,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 23:05:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 23:05:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:05:23,888 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:05:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:23,947 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2024-11-22 23:05:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 23:05:23,947 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 57 [2024-11-22 23:05:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:23,948 INFO L225 Difference]: With dead ends: 86 [2024-11-22 23:05:23,948 INFO L226 Difference]: Without dead ends: 85 [2024-11-22 23:05:23,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:05:23,949 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:23,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 172 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:23,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-22 23:05:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-22 23:05:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 68 states have internal predecessors, (69), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 23:05:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2024-11-22 23:05:23,954 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 57 [2024-11-22 23:05:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:23,954 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2024-11-22 23:05:23,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:05:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2024-11-22 23:05:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-22 23:05:23,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:23,955 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-22 23:05:23,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 23:05:24,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:24,160 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:24,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash -988143200, now seen corresponding path program 2 times [2024-11-22 23:05:24,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:24,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225055404] [2024-11-22 23:05:24,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:24,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:24,171 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:24,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 14 proven. 64 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-22 23:05:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225055404] [2024-11-22 23:05:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225055404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551767880] [2024-11-22 23:05:24,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:24,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:24,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:24,365 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:24,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:05:24,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:24,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:24,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:24,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 25 proven. 54 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2024-11-22 23:05:24,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-22 23:05:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551767880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:24,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2024-11-22 23:05:24,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53815478] [2024-11-22 23:05:24,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:24,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 23:05:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 23:05:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:05:24,854 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-22 23:05:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:24,941 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2024-11-22 23:05:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:05:24,941 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) Word has length 89 [2024-11-22 23:05:24,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:24,942 INFO L225 Difference]: With dead ends: 85 [2024-11-22 23:05:24,942 INFO L226 Difference]: Without dead ends: 84 [2024-11-22 23:05:24,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2024-11-22 23:05:24,943 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:24,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 227 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-22 23:05:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-22 23:05:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 67 states have internal predecessors, (67), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 23:05:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2024-11-22 23:05:24,950 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 89 [2024-11-22 23:05:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:24,951 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2024-11-22 23:05:24,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-22 23:05:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2024-11-22 23:05:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 23:05:24,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:24,952 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2024-11-22 23:05:24,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 23:05:25,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:25,157 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:25,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash -765707805, now seen corresponding path program 3 times [2024-11-22 23:05:25,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:25,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014056652] [2024-11-22 23:05:25,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:05:25,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:25,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-22 23:05:25,178 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 189 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2024-11-22 23:05:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014056652] [2024-11-22 23:05:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014056652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350540373] [2024-11-22 23:05:25,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:05:25,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:25,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:25,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:25,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:05:25,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-22 23:05:25,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:25,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:05:25,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-22 23:05:25,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-22 23:05:26,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350540373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:26,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:26,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 31 [2024-11-22 23:05:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616599431] [2024-11-22 23:05:26,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:26,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 23:05:26,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 23:05:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2024-11-22 23:05:26,788 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-22 23:05:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:26,840 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2024-11-22 23:05:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:05:26,840 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) Word has length 143 [2024-11-22 23:05:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:26,841 INFO L225 Difference]: With dead ends: 84 [2024-11-22 23:05:26,841 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 23:05:26,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 270 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 23:05:26,842 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:26,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 165 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 23:05:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 23:05:26,843 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) [2024-11-22 23:05:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 23:05:26,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2024-11-22 23:05:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:26,843 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 23:05:26,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.7096774193548385) internal successors, (84), 32 states have internal predecessors, (84), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (21), 21 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-22 23:05:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 23:05:26,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 23:05:26,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-22 23:05:26,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-22 23:05:26,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-22 23:05:26,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-22 23:05:26,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-22 23:05:26,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-22 23:05:26,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:27,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 23:05:27,050 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 23:05:27,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 23:05:27,440 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 23:05:27,487 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 23:05:27,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:05:27 BoogieIcfgContainer [2024-11-22 23:05:27,498 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 23:05:27,499 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 23:05:27,499 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 23:05:27,499 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 23:05:27,499 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:18" (3/4) ... [2024-11-22 23:05:27,501 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 23:05:27,508 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-11-22 23:05:27,516 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 23:05:27,516 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 23:05:27,517 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 23:05:27,517 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 23:05:27,645 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 23:05:27,645 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 23:05:27,645 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 23:05:27,646 INFO L158 Benchmark]: Toolchain (without parser) took 9587.72ms. Allocated memory was 211.8MB in the beginning and 308.3MB in the end (delta: 96.5MB). Free memory was 145.2MB in the beginning and 257.5MB in the end (delta: -112.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:27,646 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 121.6MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:27,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.02ms. Allocated memory is still 211.8MB. Free memory was 145.0MB in the beginning and 133.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 23:05:27,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.40ms. Allocated memory is still 211.8MB. Free memory was 133.0MB in the beginning and 131.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:27,647 INFO L158 Benchmark]: Boogie Preprocessor took 20.97ms. Allocated memory is still 211.8MB. Free memory was 131.7MB in the beginning and 130.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:27,647 INFO L158 Benchmark]: RCFGBuilder took 219.07ms. Allocated memory is still 211.8MB. Free memory was 130.2MB in the beginning and 118.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 23:05:27,647 INFO L158 Benchmark]: TraceAbstraction took 8970.79ms. Allocated memory was 211.8MB in the beginning and 308.3MB in the end (delta: 96.5MB). Free memory was 118.4MB in the beginning and 262.7MB in the end (delta: -144.3MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. [2024-11-22 23:05:27,648 INFO L158 Benchmark]: Witness Printer took 146.62ms. Allocated memory is still 308.3MB. Free memory was 262.7MB in the beginning and 257.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 23:05:27,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 121.6MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.02ms. Allocated memory is still 211.8MB. Free memory was 145.0MB in the beginning and 133.2MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.40ms. Allocated memory is still 211.8MB. Free memory was 133.0MB in the beginning and 131.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.97ms. Allocated memory is still 211.8MB. Free memory was 131.7MB in the beginning and 130.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 219.07ms. Allocated memory is still 211.8MB. Free memory was 130.2MB in the beginning and 118.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8970.79ms. Allocated memory was 211.8MB in the beginning and 308.3MB in the end (delta: 96.5MB). Free memory was 118.4MB in the beginning and 262.7MB in the end (delta: -144.3MB). Peak memory consumption was 111.6MB. Max. memory is 16.1GB. * Witness Printer took 146.62ms. Allocated memory is still 308.3MB. Free memory was 262.7MB in the beginning and 257.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8.5s, OverallIterations: 12, TraceHistogramMax: 15, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 642 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 621 mSDsluCounter, 1619 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1328 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2157 IncrementalHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 291 mSDtfsCounter, 2157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1111 GetRequests, 880 SyntacticMatches, 41 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1498 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=7, InterpolantAutomatonStates: 129, 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, 12 MinimizatonAttempts, 84 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 1076 NumberOfCodeBlocks, 1064 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 1516 ConstructedInterpolants, 0 QuantifiedInterpolants, 3435 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1066 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 2960/3950 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 6 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Requires: (n <= 5) Ensures: ((n <= 5) && ((((\result == 0) && (n <= 0)) || (1 < n)) || ((\result == 1) && (1 == n)))) RESULT: Ultimate proved your program to be correct! [2024-11-22 23:05:27,670 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