./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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-?-c7c6ca5-m [2024-11-09 12:13:30,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 12:13:30,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 12:13:30,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 12:13:30,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 12:13:30,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 12:13:30,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 12:13:30,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 12:13:30,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 12:13:30,260 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 12:13:30,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 12:13:30,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 12:13:30,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 12:13:30,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 12:13:30,265 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 12:13:30,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 12:13:30,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 12:13:30,266 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 12:13:30,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 12:13:30,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 12:13:30,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 12:13:30,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 12:13:30,268 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 12:13:30,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 12:13:30,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 12:13:30,269 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 12:13:30,269 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 12:13:30,269 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 12:13:30,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 12:13:30,270 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 12:13:30,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 12:13:30,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 12:13:30,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 12:13:30,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 12:13:30,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:13:30,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 12:13:30,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 12:13:30,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 12:13:30,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 12:13:30,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 12:13:30,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 12:13:30,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 12:13:30,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 12:13:30,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 12:13:30,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2024-11-09 12:13:30,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 12:13:30,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 12:13:30,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 12:13:30,546 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 12:13:30,546 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 12:13:30,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-11-09 12:13:32,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 12:13:32,237 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 12:13:32,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-11-09 12:13:32,245 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4544f81ca/4f6442d6160444c7a0a8400e4db489fa/FLAG314d69338 [2024-11-09 12:13:32,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4544f81ca/4f6442d6160444c7a0a8400e4db489fa [2024-11-09 12:13:32,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 12:13:32,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 12:13:32,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 12:13:32,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 12:13:32,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 12:13:32,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ddf90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32, skipping insertion in model container [2024-11-09 12:13:32,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 12:13:32,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:13:32,493 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 12:13:32,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 12:13:32,527 INFO L204 MainTranslator]: Completed translation [2024-11-09 12:13:32,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32 WrapperNode [2024-11-09 12:13:32,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 12:13:32,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 12:13:32,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 12:13:32,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 12:13:32,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,559 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-09 12:13:32,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 12:13:32,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 12:13:32,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 12:13:32,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 12:13:32,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,591 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]. [2024-11-09 12:13:32,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 12:13:32,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 12:13:32,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 12:13:32,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 12:13:32,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (1/1) ... [2024-11-09 12:13:32,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 12:13:32,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:32,640 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) [2024-11-09 12:13:32,647 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 [2024-11-09 12:13:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 12:13:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 12:13:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 12:13:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 12:13:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-09 12:13:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-09 12:13:32,754 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 12:13:32,756 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 12:13:32,868 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-09 12:13:32,869 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 12:13:32,879 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 12:13:32,879 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 12:13:32,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:13:32 BoogieIcfgContainer [2024-11-09 12:13:32,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 12:13:32,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 12:13:32,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 12:13:32,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 12:13:32,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:13:32" (1/3) ... [2024-11-09 12:13:32,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789dea96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:13:32, skipping insertion in model container [2024-11-09 12:13:32,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:13:32" (2/3) ... [2024-11-09 12:13:32,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789dea96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:13:32, skipping insertion in model container [2024-11-09 12:13:32,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:13:32" (3/3) ... [2024-11-09 12:13:32,889 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-11-09 12:13:32,904 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 12:13:32,904 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 12:13:32,959 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 12:13:32,968 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;@36eb0055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 12:13:32,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 12:13:32,972 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) [2024-11-09 12:13:32,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 12:13:32,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:32,979 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:13:32,980 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:32,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1842216079, now seen corresponding path program 1 times [2024-11-09 12:13:32,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:32,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666871129] [2024-11-09 12:13:32,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:13:33,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:33,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666871129] [2024-11-09 12:13:33,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666871129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:13:33,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:13:33,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 12:13:33,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626350799] [2024-11-09 12:13:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:13:33,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 12:13:33,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 12:13:33,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 12:13:33,265 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) [2024-11-09 12:13:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:33,323 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-09 12:13:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 12:13:33,326 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 [2024-11-09 12:13:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:33,333 INFO L225 Difference]: With dead ends: 38 [2024-11-09 12:13:33,333 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 12:13:33,336 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 [2024-11-09 12:13:33,341 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 [2024-11-09 12:13:33,343 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] [2024-11-09 12:13:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 12:13:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-09 12:13:33,383 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) [2024-11-09 12:13:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-09 12:13:33,386 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-09 12:13:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:33,387 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-09 12:13:33,388 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) [2024-11-09 12:13:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-09 12:13:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 12:13:33,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:33,390 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:13:33,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 12:13:33,390 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:33,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1274123662, now seen corresponding path program 1 times [2024-11-09 12:13:33,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:33,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82858779] [2024-11-09 12:13:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:13:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82858779] [2024-11-09 12:13:33,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82858779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:13:33,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:13:33,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:13:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346582871] [2024-11-09 12:13:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:13:33,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:13:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:33,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:13:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:13:33,506 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) [2024-11-09 12:13:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:33,589 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-09 12:13:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:13:33,590 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 [2024-11-09 12:13:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:33,591 INFO L225 Difference]: With dead ends: 24 [2024-11-09 12:13:33,592 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 12:13:33,592 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 [2024-11-09 12:13:33,594 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 [2024-11-09 12:13:33,595 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] [2024-11-09 12:13:33,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 12:13:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-09 12:13:33,603 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) [2024-11-09 12:13:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-09 12:13:33,606 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-09 12:13:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:33,607 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-09 12:13:33,607 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) [2024-11-09 12:13:33,608 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-09 12:13:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 12:13:33,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:33,609 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:13:33,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 12:13:33,611 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:33,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash 572400255, now seen corresponding path program 1 times [2024-11-09 12:13:33,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:33,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053205149] [2024-11-09 12:13:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:33,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:33,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:13:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:33,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-09 12:13:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 12:13:33,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:33,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053205149] [2024-11-09 12:13:33,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053205149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:13:33,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:13:33,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:13:33,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382959372] [2024-11-09 12:13:33,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:13:33,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:13:33,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:33,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:13:33,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:13:33,881 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) [2024-11-09 12:13:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:33,918 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-09 12:13:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:13:33,919 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 [2024-11-09 12:13:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:33,920 INFO L225 Difference]: With dead ends: 34 [2024-11-09 12:13:33,920 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 12:13:33,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:13:33,922 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 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 [2024-11-09 12:13:33,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:13:33,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 12:13:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-09 12:13:33,933 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) [2024-11-09 12:13:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-09 12:13:33,935 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2024-11-09 12:13:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:33,937 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-09 12:13:33,938 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) [2024-11-09 12:13:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-09 12:13:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 12:13:33,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:33,939 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] [2024-11-09 12:13:33,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 12:13:33,940 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:33,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1209322478, now seen corresponding path program 1 times [2024-11-09 12:13:33,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:33,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731187247] [2024-11-09 12:13:33,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:33,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:34,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:13:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:34,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-09 12:13:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 12:13:34,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731187247] [2024-11-09 12:13:34,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731187247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839524692] [2024-11-09 12:13:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:34,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:34,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:34,128 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) [2024-11-09 12:13:34,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 12:13:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:34,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 12:13:34,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 12:13:34,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:13:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 12:13:34,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839524692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:13:34,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:13:34,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-09 12:13:34,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227018007] [2024-11-09 12:13:34,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:13:34,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 12:13:34,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:34,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 12:13:34,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-09 12:13:34,582 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:13:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:35,155 INFO L93 Difference]: Finished difference Result 178 states and 258 transitions. [2024-11-09 12:13:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 12:13:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2024-11-09 12:13:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:35,158 INFO L225 Difference]: With dead ends: 178 [2024-11-09 12:13:35,158 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 12:13:35,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-11-09 12:13:35,161 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 178 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:35,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 327 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 12:13:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 12:13:35,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 129. [2024-11-09 12:13:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.11) internal successors, (111), 102 states have internal predecessors, (111), 17 states have call successors, (17), 5 states have call predecessors, (17), 10 states have return successors, (46), 21 states have call predecessors, (46), 16 states have call successors, (46) [2024-11-09 12:13:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2024-11-09 12:13:35,201 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 30 [2024-11-09 12:13:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:35,203 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2024-11-09 12:13:35,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 12:13:35,203 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2024-11-09 12:13:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 12:13:35,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:35,205 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:13:35,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 12:13:35,407 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 [2024-11-09 12:13:35,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:35,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash -454582160, now seen corresponding path program 2 times [2024-11-09 12:13:35,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:35,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636883251] [2024-11-09 12:13:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:35,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 12:13:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:35,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 12:13:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 12:13:35,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:35,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636883251] [2024-11-09 12:13:35,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636883251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:35,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311302491] [2024-11-09 12:13:35,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 12:13:35,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:35,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:35,598 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) [2024-11-09 12:13:35,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 12:13:35,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 12:13:35,660 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 12:13:35,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 12:13:35,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 12:13:35,713 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:13:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311302491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:13:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:13:35,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 12:13:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112407617] [2024-11-09 12:13:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:13:35,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:13:35,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:13:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:13:35,717 INFO L87 Difference]: Start difference. First operand 129 states and 174 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) [2024-11-09 12:13:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:35,760 INFO L93 Difference]: Finished difference Result 152 states and 210 transitions. [2024-11-09 12:13:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:13:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-09 12:13:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:35,764 INFO L225 Difference]: With dead ends: 152 [2024-11-09 12:13:35,764 INFO L226 Difference]: Without dead ends: 151 [2024-11-09 12:13:35,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 12:13:35,769 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 [2024-11-09 12:13:35,770 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] [2024-11-09 12:13:35,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-09 12:13:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 137. [2024-11-09 12:13:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 107 states have (on average 1.102803738317757) internal successors, (118), 107 states have internal predecessors, (118), 17 states have call successors, (17), 5 states have call predecessors, (17), 11 states have return successors, (55), 24 states have call predecessors, (55), 16 states have call successors, (55) [2024-11-09 12:13:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 190 transitions. [2024-11-09 12:13:35,801 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 190 transitions. Word has length 42 [2024-11-09 12:13:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:35,804 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 190 transitions. [2024-11-09 12:13:35,805 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) [2024-11-09 12:13:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 190 transitions. [2024-11-09 12:13:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 12:13:35,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:35,809 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:13:35,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 12:13:36,010 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 [2024-11-09 12:13:36,011 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:36,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1207144999, now seen corresponding path program 1 times [2024-11-09 12:13:36,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:36,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496459450] [2024-11-09 12:13:36,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:36,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 12:13:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 12:13:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 12:13:36,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:36,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496459450] [2024-11-09 12:13:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496459450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523357001] [2024-11-09 12:13:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:36,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:36,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:36,121 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) [2024-11-09 12:13:36,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 12:13:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 12:13:36,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 12:13:36,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 12:13:36,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523357001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:13:36,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 12:13:36,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-09 12:13:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456828414] [2024-11-09 12:13:36,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:13:36,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 12:13:36,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:36,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 12:13:36,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:13:36,219 INFO L87 Difference]: Start difference. First operand 137 states and 190 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-09 12:13:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:36,266 INFO L93 Difference]: Finished difference Result 206 states and 326 transitions. [2024-11-09 12:13:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 12:13:36,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 43 [2024-11-09 12:13:36,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:36,270 INFO L225 Difference]: With dead ends: 206 [2024-11-09 12:13:36,273 INFO L226 Difference]: Without dead ends: 205 [2024-11-09 12:13:36,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-09 12:13:36,274 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:36,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 56 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:13:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-09 12:13:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 153. [2024-11-09 12:13:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 119 states have internal predecessors, (131), 19 states have call successors, (19), 5 states have call predecessors, (19), 12 states have return successors, (76), 28 states have call predecessors, (76), 18 states have call successors, (76) [2024-11-09 12:13:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 226 transitions. [2024-11-09 12:13:36,318 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 226 transitions. Word has length 43 [2024-11-09 12:13:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:36,319 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 226 transitions. [2024-11-09 12:13:36,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-09 12:13:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 226 transitions. [2024-11-09 12:13:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 12:13:36,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:36,321 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] [2024-11-09 12:13:36,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 12:13:36,528 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 [2024-11-09 12:13:36,529 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:36,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:36,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1600174322, now seen corresponding path program 1 times [2024-11-09 12:13:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534078873] [2024-11-09 12:13:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 12:13:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 12:13:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 12:13:36,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:36,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534078873] [2024-11-09 12:13:36,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534078873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 12:13:36,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 12:13:36,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 12:13:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681552565] [2024-11-09 12:13:36,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 12:13:36,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 12:13:36,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 12:13:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:13:36,658 INFO L87 Difference]: Start difference. First operand 153 states and 226 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) [2024-11-09 12:13:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:36,714 INFO L93 Difference]: Finished difference Result 180 states and 270 transitions. [2024-11-09 12:13:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 12:13:36,715 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 [2024-11-09 12:13:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:36,717 INFO L225 Difference]: With dead ends: 180 [2024-11-09 12:13:36,720 INFO L226 Difference]: Without dead ends: 179 [2024-11-09 12:13:36,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 12:13:36,722 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:36,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 61 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:13:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-09 12:13:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 164. [2024-11-09 12:13:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 129 states have (on average 1.0852713178294573) internal successors, (140), 127 states have internal predecessors, (140), 21 states have call successors, (21), 5 states have call predecessors, (21), 12 states have return successors, (88), 31 states have call predecessors, (88), 20 states have call successors, (88) [2024-11-09 12:13:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 249 transitions. [2024-11-09 12:13:36,753 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 249 transitions. Word has length 44 [2024-11-09 12:13:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:36,753 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 249 transitions. [2024-11-09 12:13:36,754 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) [2024-11-09 12:13:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 249 transitions. [2024-11-09 12:13:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 12:13:36,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:36,756 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 12:13:36,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 12:13:36,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1397322107, now seen corresponding path program 1 times [2024-11-09 12:13:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811095450] [2024-11-09 12:13:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 12:13:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-09 12:13:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:13:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-09 12:13:36,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:36,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811095450] [2024-11-09 12:13:36,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811095450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:36,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39158080] [2024-11-09 12:13:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:36,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:36,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:36,908 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) [2024-11-09 12:13:36,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 12:13:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:36,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 12:13:36,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 12:13:37,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:13:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 46 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 12:13:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39158080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:13:37,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:13:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2024-11-09 12:13:37,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206989307] [2024-11-09 12:13:37,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:13:37,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 12:13:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 12:13:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-09 12:13:37,345 INFO L87 Difference]: Start difference. First operand 164 states and 249 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 12:13:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:37,698 INFO L93 Difference]: Finished difference Result 295 states and 467 transitions. [2024-11-09 12:13:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 12:13:37,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2024-11-09 12:13:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:37,700 INFO L225 Difference]: With dead ends: 295 [2024-11-09 12:13:37,700 INFO L226 Difference]: Without dead ends: 146 [2024-11-09 12:13:37,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2024-11-09 12:13:37,708 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 158 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:37,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 109 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:13:37,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-09 12:13:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2024-11-09 12:13:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 98 states have internal predecessors, (103), 16 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (30), 20 states have call predecessors, (30), 15 states have call successors, (30) [2024-11-09 12:13:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2024-11-09 12:13:37,722 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 62 [2024-11-09 12:13:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:37,723 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2024-11-09 12:13:37,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 8 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-09 12:13:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2024-11-09 12:13:37,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 12:13:37,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:37,725 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] [2024-11-09 12:13:37,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 12:13:37,929 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 [2024-11-09 12:13:37,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:37,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash -587569672, now seen corresponding path program 1 times [2024-11-09 12:13:37,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:37,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150520764] [2024-11-09 12:13:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:37,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 12:13:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:13:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 12:13:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 12:13:38,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150520764] [2024-11-09 12:13:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150520764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741413368] [2024-11-09 12:13:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:38,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:38,088 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) [2024-11-09 12:13:38,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 12:13:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 12:13:38,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-09 12:13:38,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:13:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 12:13:38,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741413368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:13:38,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:13:38,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-11-09 12:13:38,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094555760] [2024-11-09 12:13:38,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:13:38,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 12:13:38,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 12:13:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 12:13:38,396 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 12:13:38,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:38,501 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2024-11-09 12:13:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 12:13:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) Word has length 57 [2024-11-09 12:13:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:38,503 INFO L225 Difference]: With dead ends: 126 [2024-11-09 12:13:38,503 INFO L226 Difference]: Without dead ends: 125 [2024-11-09 12:13:38,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 12:13:38,504 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:38,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 12:13:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-09 12:13:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2024-11-09 12:13:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.0520833333333333) internal successors, (101), 98 states have internal predecessors, (101), 16 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (30), 20 states have call predecessors, (30), 15 states have call successors, (30) [2024-11-09 12:13:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2024-11-09 12:13:38,516 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 57 [2024-11-09 12:13:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:38,516 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2024-11-09 12:13:38,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 8 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 12:13:38,517 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2024-11-09 12:13:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 12:13:38,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:38,521 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 12:13:38,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 12:13:38,721 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 [2024-11-09 12:13:38,722 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:38,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash -646956560, now seen corresponding path program 2 times [2024-11-09 12:13:38,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:38,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972193014] [2024-11-09 12:13:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:38,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-09 12:13:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:13:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-09 12:13:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 12:13:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 51 proven. 69 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 12:13:38,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:38,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972193014] [2024-11-09 12:13:38,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972193014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:38,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008387363] [2024-11-09 12:13:38,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 12:13:38,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:38,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:38,925 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) [2024-11-09 12:13:38,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 12:13:38,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 12:13:38,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 12:13:38,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 12:13:38,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-09 12:13:39,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:13:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-09 12:13:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008387363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:13:39,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:13:39,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 5] total 21 [2024-11-09 12:13:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667826699] [2024-11-09 12:13:39,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:13:39,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 12:13:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:39,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 12:13:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-09 12:13:39,303 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-09 12:13:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:39,984 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2024-11-09 12:13:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 12:13:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) Word has length 74 [2024-11-09 12:13:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:39,986 INFO L225 Difference]: With dead ends: 233 [2024-11-09 12:13:39,986 INFO L226 Difference]: Without dead ends: 124 [2024-11-09 12:13:39,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=534, Invalid=1722, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 12:13:39,989 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 201 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:39,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 63 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 12:13:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-09 12:13:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2024-11-09 12:13:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 65 states have internal predecessors, (65), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-09 12:13:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2024-11-09 12:13:39,998 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 74 [2024-11-09 12:13:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:39,998 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2024-11-09 12:13:39,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-09 12:13:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2024-11-09 12:13:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-09 12:13:40,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 12:13:40,002 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] [2024-11-09 12:13:40,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 12:13:40,202 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 [2024-11-09 12:13:40,203 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 12:13:40,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 12:13:40,203 INFO L85 PathProgramCache]: Analyzing trace with hash -765707805, now seen corresponding path program 2 times [2024-11-09 12:13:40,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 12:13:40,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635248688] [2024-11-09 12:13:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 12:13:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 12:13:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 12:13:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:13:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 12:13:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-09 12:13:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:13:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-09 12:13:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-09 12:13:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-09 12:13:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-09 12:13:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 12:13:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-09 12:13:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 12:13:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635248688] [2024-11-09 12:13:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635248688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 12:13:40,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404956214] [2024-11-09 12:13:40,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 12:13:40,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 12:13:40,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 12:13:40,911 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) [2024-11-09 12:13:40,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 12:13:40,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 12:13:40,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 12:13:40,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 12:13:40,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 12:13:41,182 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-09 12:13:41,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 12:13:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-09 12:13:42,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404956214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 12:13:42,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 12:13:42,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2024-11-09 12:13:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167856156] [2024-11-09 12:13:42,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 12:13:42,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 12:13:42,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 12:13:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 12:13:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-09 12:13:42,507 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-09 12:13:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 12:13:42,555 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2024-11-09 12:13:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 12:13:42,555 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 143 [2024-11-09 12:13:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 12:13:42,556 INFO L225 Difference]: With dead ends: 81 [2024-11-09 12:13:42,556 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 12:13:42,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 300 SyntacticMatches, 16 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-09 12:13:42,557 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 12:13:42,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 12:13:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 12:13:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 12:13:42,558 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) [2024-11-09 12:13:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 12:13:42,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2024-11-09 12:13:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 12:13:42,559 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 12:13:42,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-09 12:13:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 12:13:42,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 12:13:42,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-09 12:13:42,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 12:13:42,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 12:13:42,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 12:13:42,562 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 12:13:42,563 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-09 12:13:42,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 12:13:42,763 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 [2024-11-09 12:13:42,766 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 12:13:42,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 12:13:43,523 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 12:13:43,547 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-09 12:13:43,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:13:43 BoogieIcfgContainer [2024-11-09 12:13:43,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 12:13:43,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 12:13:43,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 12:13:43,554 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 12:13:43,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:13:32" (3/4) ... [2024-11-09 12:13:43,557 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 12:13:43,561 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-11-09 12:13:43,565 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-09 12:13:43,565 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 12:13:43,565 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 12:13:43,565 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 12:13:43,653 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 12:13:43,654 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 12:13:43,654 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 12:13:43,655 INFO L158 Benchmark]: Toolchain (without parser) took 11390.14ms. Allocated memory was 155.2MB in the beginning and 255.9MB in the end (delta: 100.7MB). Free memory was 97.9MB in the beginning and 138.9MB in the end (delta: -40.9MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,655 INFO L158 Benchmark]: CDTParser took 0.89ms. Allocated memory is still 155.2MB. Free memory is still 113.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 12:13:43,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.59ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 86.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.45ms. Allocated memory is still 155.2MB. Free memory was 86.0MB in the beginning and 84.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,656 INFO L158 Benchmark]: Boogie Preprocessor took 39.85ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 82.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,656 INFO L158 Benchmark]: RCFGBuilder took 278.42ms. Allocated memory is still 155.2MB. Free memory was 82.9MB in the beginning and 72.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,656 INFO L158 Benchmark]: TraceAbstraction took 10671.15ms. Allocated memory was 155.2MB in the beginning and 255.9MB in the end (delta: 100.7MB). Free memory was 71.7MB in the beginning and 143.1MB in the end (delta: -71.4MB). Peak memory consumption was 99.6MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,656 INFO L158 Benchmark]: Witness Printer took 100.71ms. Allocated memory is still 255.9MB. Free memory was 143.1MB in the beginning and 138.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 12:13:43,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89ms. Allocated memory is still 155.2MB. Free memory is still 113.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.59ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 86.0MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.45ms. Allocated memory is still 155.2MB. Free memory was 86.0MB in the beginning and 84.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.85ms. Allocated memory is still 155.2MB. Free memory was 84.6MB in the beginning and 82.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.42ms. Allocated memory is still 155.2MB. Free memory was 82.9MB in the beginning and 72.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10671.15ms. Allocated memory was 155.2MB in the beginning and 255.9MB in the end (delta: 100.7MB). Free memory was 71.7MB in the beginning and 143.1MB in the end (delta: -71.4MB). Peak memory consumption was 99.6MB. Max. memory is 16.1GB. * Witness Printer took 100.71ms. Allocated memory is still 255.9MB. Free memory was 143.1MB in the beginning and 138.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 9.8s, OverallIterations: 11, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 601 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 587 mSDsluCounter, 1053 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 831 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1408 IncrementalHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 222 mSDtfsCounter, 1408 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1024 GetRequests, 831 SyntacticMatches, 32 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=7, InterpolantAutomatonStates: 122, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 170 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 984 NumberOfCodeBlocks, 984 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1327 ConstructedInterpolants, 0 QuantifiedInterpolants, 2873 SizeOfPredicates, 8 NumberOfNonLiveVariables, 967 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 2809/3532 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: Ultimate proved your program to be correct! [2024-11-09 12:13:43,680 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