./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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/Fibonacci02.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 b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 11:07:19,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 11:07:19,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 11:07:19,553 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 11:07:19,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 11:07:19,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 11:07:19,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 11:07:19,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 11:07:19,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 11:07:19,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 11:07:19,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 11:07:19,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 11:07:19,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 11:07:19,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 11:07:19,583 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 11:07:19,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 11:07:19,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 11:07:19,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 11:07:19,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 11:07:19,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 11:07:19,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 11:07:19,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 11:07:19,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 11:07:19,587 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 11:07:19,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 11:07:19,588 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 11:07:19,588 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 11:07:19,588 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 11:07:19,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 11:07:19,588 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 11:07:19,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 11:07:19,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 11:07:19,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 11:07:19,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 11:07:19,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:07:19,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 11:07:19,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 11:07:19,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 11:07:19,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 11:07:19,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 11:07:19,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 11:07:19,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 11:07:19,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 11:07:19,594 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 11:07:19,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2024-11-19 11:07:19,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 11:07:19,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 11:07:19,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 11:07:19,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 11:07:19,808 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 11:07:19,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-19 11:07:21,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 11:07:21,240 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 11:07:21,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-19 11:07:21,246 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b660cde/b53556cbfac5488ca69c81c49ce8b827/FLAGfefef7b78 [2024-11-19 11:07:21,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b660cde/b53556cbfac5488ca69c81c49ce8b827 [2024-11-19 11:07:21,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 11:07:21,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 11:07:21,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 11:07:21,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 11:07:21,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 11:07:21,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4281cf84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21, skipping insertion in model container [2024-11-19 11:07:21,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 11:07:21,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:07:21,428 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 11:07:21,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 11:07:21,452 INFO L204 MainTranslator]: Completed translation [2024-11-19 11:07:21,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21 WrapperNode [2024-11-19 11:07:21,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 11:07:21,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 11:07:21,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 11:07:21,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 11:07:21,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,477 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-19 11:07:21,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 11:07:21,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 11:07:21,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 11:07:21,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 11:07:21,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,495 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]. [2024-11-19 11:07:21,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 11:07:21,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 11:07:21,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 11:07:21,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 11:07:21,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (1/1) ... [2024-11-19 11:07:21,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 11:07:21,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:21,529 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) [2024-11-19 11:07:21,533 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 [2024-11-19 11:07:21,573 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-19 11:07:21,574 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-19 11:07:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 11:07:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 11:07:21,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 11:07:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 11:07:21,626 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 11:07:21,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 11:07:21,754 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-19 11:07:21,755 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 11:07:21,771 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 11:07:21,771 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 11:07:21,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:21 BoogieIcfgContainer [2024-11-19 11:07:21,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 11:07:21,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 11:07:21,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 11:07:21,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 11:07:21,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:07:21" (1/3) ... [2024-11-19 11:07:21,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526ab96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:21, skipping insertion in model container [2024-11-19 11:07:21,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:21" (2/3) ... [2024-11-19 11:07:21,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526ab96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:07:21, skipping insertion in model container [2024-11-19 11:07:21,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:21" (3/3) ... [2024-11-19 11:07:21,781 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2024-11-19 11:07:21,796 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 11:07:21,797 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 11:07:21,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 11:07:21,860 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;@35825cf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 11:07:21,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 11:07:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 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) [2024-11-19 11:07:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 11:07:21,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:21,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:21,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:21,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2024-11-19 11:07:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:21,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214557295] [2024-11-19 11:07:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:07:22,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214557295] [2024-11-19 11:07:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214557295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:22,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:22,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 11:07:22,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211863244] [2024-11-19 11:07:22,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:22,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 11:07:22,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 11:07:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 11:07:22,082 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 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) [2024-11-19 11:07:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:22,122 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-19 11:07:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 11:07:22,124 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 [2024-11-19 11:07:22,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:22,135 INFO L225 Difference]: With dead ends: 36 [2024-11-19 11:07:22,138 INFO L226 Difference]: Without dead ends: 24 [2024-11-19 11:07:22,141 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 [2024-11-19 11:07:22,148 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 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 [2024-11-19 11:07:22,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:22,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-19 11:07:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-19 11:07:22,182 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) [2024-11-19 11:07:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-19 11:07:22,186 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-19 11:07:22,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:22,187 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-19 11:07:22,187 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) [2024-11-19 11:07:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-19 11:07:22,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-19 11:07:22,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:22,188 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:22,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 11:07:22,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:22,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:22,189 INFO L85 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2024-11-19 11:07:22,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:22,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840405661] [2024-11-19 11:07:22,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:07:22,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840405661] [2024-11-19 11:07:22,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840405661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:22,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852224793] [2024-11-19 11:07:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:22,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:22,278 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) [2024-11-19 11:07:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:22,373 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-19 11:07:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:22,373 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 [2024-11-19 11:07:22,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:22,374 INFO L225 Difference]: With dead ends: 24 [2024-11-19 11:07:22,374 INFO L226 Difference]: Without dead ends: 22 [2024-11-19 11:07:22,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:07:22,376 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:22,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-19 11:07:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-19 11:07:22,381 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) [2024-11-19 11:07:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-19 11:07:22,382 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-19 11:07:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:22,382 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-19 11:07:22,382 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) [2024-11-19 11:07:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-19 11:07:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 11:07:22,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:22,384 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:22,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 11:07:22,384 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:22,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2024-11-19 11:07:22,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296971687] [2024-11-19 11:07:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296971687] [2024-11-19 11:07:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296971687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:22,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690630880] [2024-11-19 11:07:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:22,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:22,564 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) [2024-11-19 11:07:22,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:22,616 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-19 11:07:22,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:22,619 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 29 [2024-11-19 11:07:22,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:22,620 INFO L225 Difference]: With dead ends: 34 [2024-11-19 11:07:22,620 INFO L226 Difference]: Without dead ends: 32 [2024-11-19 11:07:22,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:22,621 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 [2024-11-19 11:07:22,621 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] [2024-11-19 11:07:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-19 11:07:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-19 11:07:22,630 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) [2024-11-19 11:07:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-19 11:07:22,635 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2024-11-19 11:07:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:22,636 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-19 11:07:22,636 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) [2024-11-19 11:07:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-19 11:07:22,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 11:07:22,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:22,639 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:22,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 11:07:22,639 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:22,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:22,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1274820555, now seen corresponding path program 1 times [2024-11-19 11:07:22,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:22,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950618656] [2024-11-19 11:07:22,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 11:07:22,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:22,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950618656] [2024-11-19 11:07:22,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950618656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:22,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367774948] [2024-11-19 11:07:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:22,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:22,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:22,751 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) [2024-11-19 11:07:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 11:07:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:22,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 11:07:22,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:07:22,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:07:23,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367774948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:23,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:23,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-19 11:07:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232567097] [2024-11-19 11:07:23,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:23,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 11:07:23,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 11:07:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 11:07:23,014 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 11:07:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:23,345 INFO L93 Difference]: Finished difference Result 126 states and 180 transitions. [2024-11-19 11:07:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 11:07:23,346 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2024-11-19 11:07:23,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:23,347 INFO L225 Difference]: With dead ends: 126 [2024-11-19 11:07:23,347 INFO L226 Difference]: Without dead ends: 93 [2024-11-19 11:07:23,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-19 11:07:23,349 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 109 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:23,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 179 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-19 11:07:23,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2024-11-19 11:07:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-19 11:07:23,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2024-11-19 11:07:23,376 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2024-11-19 11:07:23,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:23,377 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2024-11-19 11:07:23,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 11:07:23,377 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2024-11-19 11:07:23,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 11:07:23,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:23,378 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] [2024-11-19 11:07:23,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 11:07:23,582 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 [2024-11-19 11:07:23,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:23,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:23,583 INFO L85 PathProgramCache]: Analyzing trace with hash -103317130, now seen corresponding path program 2 times [2024-11-19 11:07:23,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106911174] [2024-11-19 11:07:23,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:23,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:23,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106911174] [2024-11-19 11:07:23,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106911174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272780021] [2024-11-19 11:07:23,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:23,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:23,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:23,724 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) [2024-11-19 11:07:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 11:07:23,764 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:23,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:23,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 11:07:23,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:23,798 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:07:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272780021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:07:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-19 11:07:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695397797] [2024-11-19 11:07:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:23,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:07:23,800 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:23,822 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2024-11-19 11:07:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:23,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-19 11:07:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:23,824 INFO L225 Difference]: With dead ends: 101 [2024-11-19 11:07:23,824 INFO L226 Difference]: Without dead ends: 100 [2024-11-19 11:07:23,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:07:23,825 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:23,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 48 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:23,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-19 11:07:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2024-11-19 11:07:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2024-11-19 11:07:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2024-11-19 11:07:23,843 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 30 [2024-11-19 11:07:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:23,844 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2024-11-19 11:07:23,844 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) [2024-11-19 11:07:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2024-11-19 11:07:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 11:07:23,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:23,846 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:23,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 11:07:24,047 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 [2024-11-19 11:07:24,047 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:24,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:24,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1092136320, now seen corresponding path program 1 times [2024-11-19 11:07:24,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:24,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778381376] [2024-11-19 11:07:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 11:07:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778381376] [2024-11-19 11:07:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778381376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015615420] [2024-11-19 11:07:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:24,122 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) [2024-11-19 11:07:24,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 11:07:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:24,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 11:07:24,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 11:07:24,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 11:07:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015615420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:24,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:24,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-19 11:07:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293631277] [2024-11-19 11:07:24,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:24,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 11:07:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:24,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 11:07:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-19 11:07:24,375 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 11:07:24,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:24,971 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2024-11-19 11:07:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 11:07:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2024-11-19 11:07:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:24,973 INFO L225 Difference]: With dead ends: 287 [2024-11-19 11:07:24,973 INFO L226 Difference]: Without dead ends: 209 [2024-11-19 11:07:24,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2024-11-19 11:07:24,979 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 140 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:24,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 324 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 11:07:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-19 11:07:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 175. [2024-11-19 11:07:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2024-11-19 11:07:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2024-11-19 11:07:25,018 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2024-11-19 11:07:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:25,018 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2024-11-19 11:07:25,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 11:07:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2024-11-19 11:07:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 11:07:25,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:25,020 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:25,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:25,222 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 [2024-11-19 11:07:25,223 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:25,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 530576203, now seen corresponding path program 1 times [2024-11-19 11:07:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678133391] [2024-11-19 11:07:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-19 11:07:25,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:25,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678133391] [2024-11-19 11:07:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678133391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:25,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 11:07:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 11:07:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763634388] [2024-11-19 11:07:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:25,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 11:07:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 11:07:25,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:25,314 INFO L87 Difference]: Start difference. First operand 175 states and 255 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 11:07:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:25,344 INFO L93 Difference]: Finished difference Result 189 states and 277 transitions. [2024-11-19 11:07:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 11:07:25,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-19 11:07:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:25,347 INFO L225 Difference]: With dead ends: 189 [2024-11-19 11:07:25,348 INFO L226 Difference]: Without dead ends: 188 [2024-11-19 11:07:25,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 11:07:25,349 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:25,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-19 11:07:25,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2024-11-19 11:07:25,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.0909090909090908) internal successors, (156), 142 states have internal predecessors, (156), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2024-11-19 11:07:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2024-11-19 11:07:25,369 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 50 [2024-11-19 11:07:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:25,369 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2024-11-19 11:07:25,370 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) [2024-11-19 11:07:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2024-11-19 11:07:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 11:07:25,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:25,372 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:25,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 11:07:25,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:25,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash -491141154, now seen corresponding path program 1 times [2024-11-19 11:07:25,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057426579] [2024-11-19 11:07:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-19 11:07:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057426579] [2024-11-19 11:07:25,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057426579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969966395] [2024-11-19 11:07:25,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:25,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:25,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:25,427 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) [2024-11-19 11:07:25,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 11:07:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:25,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 11:07:25,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 67 proven. 70 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 11:07:25,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 138 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:07:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969966395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:25,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 26 [2024-11-19 11:07:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807133400] [2024-11-19 11:07:25,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:25,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 11:07:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 11:07:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2024-11-19 11:07:25,836 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 18 states have internal predecessors, (85), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-19 11:07:26,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:26,360 INFO L93 Difference]: Finished difference Result 531 states and 857 transitions. [2024-11-19 11:07:26,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 11:07:26,360 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 18 states have internal predecessors, (85), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 67 [2024-11-19 11:07:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:26,364 INFO L225 Difference]: With dead ends: 531 [2024-11-19 11:07:26,365 INFO L226 Difference]: Without dead ends: 364 [2024-11-19 11:07:26,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 115 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 11:07:26,370 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 295 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:26,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 490 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 11:07:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-19 11:07:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 332. [2024-11-19 11:07:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 262 states have (on average 1.0954198473282444) internal successors, (287), 260 states have internal predecessors, (287), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 59 states have call predecessors, (130), 41 states have call successors, (130) [2024-11-19 11:07:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 459 transitions. [2024-11-19 11:07:26,407 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 459 transitions. Word has length 67 [2024-11-19 11:07:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:26,408 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 459 transitions. [2024-11-19 11:07:26,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 18 states have internal predecessors, (85), 13 states have call successors, (18), 10 states have call predecessors, (18), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-19 11:07:26,409 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 459 transitions. [2024-11-19 11:07:26,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-19 11:07:26,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:26,412 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:26,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 11:07:26,612 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 [2024-11-19 11:07:26,613 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:26,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1091030827, now seen corresponding path program 2 times [2024-11-19 11:07:26,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:26,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710889232] [2024-11-19 11:07:26,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:26,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:26,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-19 11:07:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710889232] [2024-11-19 11:07:26,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710889232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:26,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814930294] [2024-11-19 11:07:26,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:26,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:26,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:26,681 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) [2024-11-19 11:07:26,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 11:07:26,721 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:26,722 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:26,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 11:07:26,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-19 11:07:26,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-19 11:07:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814930294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:26,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:26,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 11:07:26,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339862203] [2024-11-19 11:07:26,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:26,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 11:07:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:26,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 11:07:26,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-19 11:07:26,792 INFO L87 Difference]: Start difference. First operand 332 states and 459 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 11:07:26,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:26,844 INFO L93 Difference]: Finished difference Result 353 states and 484 transitions. [2024-11-19 11:07:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 11:07:26,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2024-11-19 11:07:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:26,848 INFO L225 Difference]: With dead ends: 353 [2024-11-19 11:07:26,848 INFO L226 Difference]: Without dead ends: 352 [2024-11-19 11:07:26,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-19 11:07:26,849 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:26,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:26,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-19 11:07:26,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 332. [2024-11-19 11:07:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 262 states have (on average 1.0954198473282444) internal successors, (287), 260 states have internal predecessors, (287), 42 states have call successors, (42), 12 states have call predecessors, (42), 26 states have return successors, (130), 59 states have call predecessors, (130), 41 states have call successors, (130) [2024-11-19 11:07:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 459 transitions. [2024-11-19 11:07:26,880 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 459 transitions. Word has length 86 [2024-11-19 11:07:26,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:26,880 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 459 transitions. [2024-11-19 11:07:26,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 11:07:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 459 transitions. [2024-11-19 11:07:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-19 11:07:26,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:26,882 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 9, 9, 9, 9, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:26,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 11:07:27,082 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 [2024-11-19 11:07:27,083 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:27,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -537782677, now seen corresponding path program 1 times [2024-11-19 11:07:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635013776] [2024-11-19 11:07:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 179 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:07:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635013776] [2024-11-19 11:07:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635013776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451021875] [2024-11-19 11:07:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 11:07:27,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:27,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:27,345 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) [2024-11-19 11:07:27,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 11:07:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 11:07:27,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 11:07:27,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 179 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:07:27,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 179 proven. 119 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 11:07:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451021875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:27,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-11-19 11:07:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052455370] [2024-11-19 11:07:27,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:27,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 11:07:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 11:07:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-19 11:07:27,699 INFO L87 Difference]: Start difference. First operand 332 states and 459 transitions. Second operand has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 14 states have internal predecessors, (67), 10 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:07:28,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:28,105 INFO L93 Difference]: Finished difference Result 627 states and 915 transitions. [2024-11-19 11:07:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 11:07:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 14 states have internal predecessors, (67), 10 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 87 [2024-11-19 11:07:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:28,108 INFO L225 Difference]: With dead ends: 627 [2024-11-19 11:07:28,108 INFO L226 Difference]: Without dead ends: 316 [2024-11-19 11:07:28,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 163 SyntacticMatches, 18 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=420, Invalid=1062, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 11:07:28,111 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 411 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:28,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 148 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 11:07:28,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-19 11:07:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 292. [2024-11-19 11:07:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 229 states have (on average 1.091703056768559) internal successors, (250), 231 states have internal predecessors, (250), 37 states have call successors, (37), 12 states have call predecessors, (37), 24 states have return successors, (72), 48 states have call predecessors, (72), 36 states have call successors, (72) [2024-11-19 11:07:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 359 transitions. [2024-11-19 11:07:28,129 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 359 transitions. Word has length 87 [2024-11-19 11:07:28,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:28,130 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 359 transitions. [2024-11-19 11:07:28,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 14 states have internal predecessors, (67), 10 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 11:07:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 359 transitions. [2024-11-19 11:07:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-19 11:07:28,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:28,132 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 11:07:28,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:28,335 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 [2024-11-19 11:07:28,336 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:28,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1462106636, now seen corresponding path program 2 times [2024-11-19 11:07:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430273758] [2024-11-19 11:07:28,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:28,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:28,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:28,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-19 11:07:28,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:28,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430273758] [2024-11-19 11:07:28,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430273758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:28,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282257411] [2024-11-19 11:07:28,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 11:07:28,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:28,437 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) [2024-11-19 11:07:28,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 11:07:28,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 11:07:28,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:28,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 11:07:28,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-19 11:07:28,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-19 11:07:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282257411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:28,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-19 11:07:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779472014] [2024-11-19 11:07:28,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:28,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 11:07:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:28,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 11:07:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-19 11:07:28,669 INFO L87 Difference]: Start difference. First operand 292 states and 359 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-19 11:07:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:28,756 INFO L93 Difference]: Finished difference Result 302 states and 371 transitions. [2024-11-19 11:07:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:07:28,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 81 [2024-11-19 11:07:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:28,759 INFO L225 Difference]: With dead ends: 302 [2024-11-19 11:07:28,759 INFO L226 Difference]: Without dead ends: 300 [2024-11-19 11:07:28,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-19 11:07:28,760 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:28,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 133 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-19 11:07:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2024-11-19 11:07:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 229 states have (on average 1.0829694323144106) internal successors, (248), 231 states have internal predecessors, (248), 37 states have call successors, (37), 12 states have call predecessors, (37), 24 states have return successors, (72), 48 states have call predecessors, (72), 36 states have call successors, (72) [2024-11-19 11:07:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 357 transitions. [2024-11-19 11:07:28,774 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 357 transitions. Word has length 81 [2024-11-19 11:07:28,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:28,775 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 357 transitions. [2024-11-19 11:07:28,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-19 11:07:28,775 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 357 transitions. [2024-11-19 11:07:28,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-19 11:07:28,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:28,776 INFO L215 NwaCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-19 11:07:28,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 11:07:28,980 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 [2024-11-19 11:07:28,981 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:28,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:28,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2138334643, now seen corresponding path program 3 times [2024-11-19 11:07:28,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840537615] [2024-11-19 11:07:28,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:29,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 11:07:29,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 73 proven. 3 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-19 11:07:29,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:29,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840537615] [2024-11-19 11:07:29,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840537615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:29,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057406926] [2024-11-19 11:07:29,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:29,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:29,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:29,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:29,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 11:07:29,091 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 11:07:29,091 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:29,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 11:07:29,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-19 11:07:29,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 11:07:29,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057406926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 11:07:29,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 11:07:29,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-11-19 11:07:29,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35570740] [2024-11-19 11:07:29,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 11:07:29,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 11:07:29,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:29,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 11:07:29,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 11:07:29,114 INFO L87 Difference]: Start difference. First operand 292 states and 357 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 11:07:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:29,156 INFO L93 Difference]: Finished difference Result 458 states and 587 transitions. [2024-11-19 11:07:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 11:07:29,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 98 [2024-11-19 11:07:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:29,158 INFO L225 Difference]: With dead ends: 458 [2024-11-19 11:07:29,158 INFO L226 Difference]: Without dead ends: 187 [2024-11-19 11:07:29,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 11:07:29,160 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:29,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-19 11:07:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2024-11-19 11:07:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 146 states have (on average 1.1232876712328768) internal successors, (164), 148 states have internal predecessors, (164), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 11:07:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 213 transitions. [2024-11-19 11:07:29,171 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 213 transitions. Word has length 98 [2024-11-19 11:07:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:29,171 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 213 transitions. [2024-11-19 11:07:29,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 11:07:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 213 transitions. [2024-11-19 11:07:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-19 11:07:29,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:29,174 INFO L215 NwaCegarLoop]: trace histogram [14, 12, 9, 9, 9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-19 11:07:29,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 11:07:29,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 11:07:29,375 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:29,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 184820579, now seen corresponding path program 4 times [2024-11-19 11:07:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538553732] [2024-11-19 11:07:29,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:29,388 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:29,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-19 11:07:29,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:29,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538553732] [2024-11-19 11:07:29,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538553732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:29,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823000298] [2024-11-19 11:07:29,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:29,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:29,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:29,615 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:29,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 11:07:29,661 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:29,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:29,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 11:07:29,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:29,794 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 11:07:29,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-19 11:07:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823000298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:30,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 22 [2024-11-19 11:07:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089669370] [2024-11-19 11:07:30,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:30,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 11:07:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 11:07:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2024-11-19 11:07:30,167 INFO L87 Difference]: Start difference. First operand 185 states and 213 transitions. Second operand has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-19 11:07:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:30,229 INFO L93 Difference]: Finished difference Result 185 states and 213 transitions. [2024-11-19 11:07:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 11:07:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) Word has length 113 [2024-11-19 11:07:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:30,231 INFO L225 Difference]: With dead ends: 185 [2024-11-19 11:07:30,231 INFO L226 Difference]: Without dead ends: 184 [2024-11-19 11:07:30,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-19 11:07:30,232 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:30,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 214 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 11:07:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-19 11:07:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-19 11:07:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.0616438356164384) internal successors, (155), 147 states have internal predecessors, (155), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 11:07:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 204 transitions. [2024-11-19 11:07:30,241 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 204 transitions. Word has length 113 [2024-11-19 11:07:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:30,241 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 204 transitions. [2024-11-19 11:07:30,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.727272727272727) internal successors, (60), 23 states have internal predecessors, (60), 5 states have call successors, (6), 1 states have call predecessors, (6), 7 states have return successors, (14), 13 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-19 11:07:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 204 transitions. [2024-11-19 11:07:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-19 11:07:30,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:30,244 INFO L215 NwaCegarLoop]: trace histogram [19, 16, 14, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2024-11-19 11:07:30,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 11:07:30,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 11:07:30,448 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:30,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1295574535, now seen corresponding path program 3 times [2024-11-19 11:07:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:30,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767623499] [2024-11-19 11:07:30,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:30,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:30,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 11:07:30,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 88 proven. 189 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2024-11-19 11:07:30,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:30,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767623499] [2024-11-19 11:07:30,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767623499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:30,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987431417] [2024-11-19 11:07:30,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 11:07:30,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:30,879 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:30,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 11:07:30,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 11:07:30,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:30,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 11:07:30,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2024-11-19 11:07:31,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-19 11:07:32,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987431417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:32,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:32,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 17] total 32 [2024-11-19 11:07:32,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806617169] [2024-11-19 11:07:32,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:32,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 11:07:32,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:32,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 11:07:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 11:07:32,079 INFO L87 Difference]: Start difference. First operand 184 states and 204 transitions. Second operand has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (22), 22 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-19 11:07:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:32,186 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2024-11-19 11:07:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 11:07:32,186 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (22), 22 states have call predecessors, (22), 8 states have call successors, (22) Word has length 167 [2024-11-19 11:07:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:32,187 INFO L225 Difference]: With dead ends: 185 [2024-11-19 11:07:32,187 INFO L226 Difference]: Without dead ends: 184 [2024-11-19 11:07:32,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 317 SyntacticMatches, 13 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 11:07:32,188 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:32,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 219 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-19 11:07:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-19 11:07:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.0342465753424657) internal successors, (151), 147 states have internal predecessors, (151), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 11:07:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 200 transitions. [2024-11-19 11:07:32,197 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 200 transitions. Word has length 167 [2024-11-19 11:07:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:32,197 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 200 transitions. [2024-11-19 11:07:32,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.71875) internal successors, (87), 33 states have internal predecessors, (87), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (22), 22 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-19 11:07:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 200 transitions. [2024-11-19 11:07:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-11-19 11:07:32,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:32,201 INFO L215 NwaCegarLoop]: trace histogram [43, 40, 35, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2024-11-19 11:07:32,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 11:07:32,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 11:07:32,405 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:32,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:32,405 INFO L85 PathProgramCache]: Analyzing trace with hash 333558980, now seen corresponding path program 4 times [2024-11-19 11:07:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530157303] [2024-11-19 11:07:32,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:32,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:32,445 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:32,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2024-11-19 11:07:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530157303] [2024-11-19 11:07:34,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530157303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117719152] [2024-11-19 11:07:34,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 11:07:34,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:34,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:34,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 11:07:34,537 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 11:07:34,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:34,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-19 11:07:34,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2024-11-19 11:07:34,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:07:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3820 trivial. 0 not checked. [2024-11-19 11:07:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117719152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:07:40,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:07:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 29] total 40 [2024-11-19 11:07:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425419725] [2024-11-19 11:07:40,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:07:40,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 11:07:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:07:40,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 11:07:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2024-11-19 11:07:40,067 INFO L87 Difference]: Start difference. First operand 184 states and 200 transitions. Second operand has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-19 11:07:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:07:40,153 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2024-11-19 11:07:40,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 11:07:40,153 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 410 [2024-11-19 11:07:40,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:07:40,155 INFO L225 Difference]: With dead ends: 185 [2024-11-19 11:07:40,155 INFO L226 Difference]: Without dead ends: 184 [2024-11-19 11:07:40,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 798 SyntacticMatches, 62 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1341, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 11:07:40,157 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:07:40,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 177 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:07:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-19 11:07:40,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-19 11:07:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 147 states have internal predecessors, (148), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 11:07:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 197 transitions. [2024-11-19 11:07:40,165 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 197 transitions. Word has length 410 [2024-11-19 11:07:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:07:40,167 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 197 transitions. [2024-11-19 11:07:40,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.625) internal successors, (105), 41 states have internal predecessors, (105), 11 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-19 11:07:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 197 transitions. [2024-11-19 11:07:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1066 [2024-11-19 11:07:40,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 11:07:40,183 INFO L215 NwaCegarLoop]: trace histogram [109, 108, 88, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2024-11-19 11:07:40,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 11:07:40,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 11:07:40,384 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 11:07:40,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 11:07:40,385 INFO L85 PathProgramCache]: Analyzing trace with hash -297717462, now seen corresponding path program 5 times [2024-11-19 11:07:40,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 11:07:40,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684967055] [2024-11-19 11:07:40,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:07:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 11:07:40,646 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 83 check-sat command(s) [2024-11-19 11:07:40,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 7413 proven. 10308 refuted. 0 times theorem prover too weak. 23745 trivial. 0 not checked. [2024-11-19 11:07:54,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 11:07:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684967055] [2024-11-19 11:07:54,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684967055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 11:07:54,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833762929] [2024-11-19 11:07:54,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 11:07:54,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 11:07:54,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 11:07:54,201 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 11:07:54,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 11:07:54,583 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 83 check-sat command(s) [2024-11-19 11:07:54,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 11:07:54,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 1988 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-19 11:07:54,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 11:07:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 26925 trivial. 0 not checked. [2024-11-19 11:07:55,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 11:08:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 41466 backedges. 7863 proven. 7392 refuted. 0 times theorem prover too weak. 26211 trivial. 0 not checked. [2024-11-19 11:08:28,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833762929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 11:08:28,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 11:08:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 41] total 60 [2024-11-19 11:08:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347666573] [2024-11-19 11:08:28,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 11:08:28,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-19 11:08:28,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 11:08:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-19 11:08:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=2848, Unknown=0, NotChecked=0, Total=3660 [2024-11-19 11:08:28,524 INFO L87 Difference]: Start difference. First operand 184 states and 197 transitions. Second operand has 61 states, 60 states have (on average 2.5833333333333335) internal successors, (155), 61 states have internal predecessors, (155), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (42), 42 states have call predecessors, (42), 16 states have call successors, (42) [2024-11-19 11:08:28,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 11:08:28,617 INFO L93 Difference]: Finished difference Result 184 states and 197 transitions. [2024-11-19 11:08:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 11:08:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 2.5833333333333335) internal successors, (155), 61 states have internal predecessors, (155), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (42), 42 states have call predecessors, (42), 16 states have call successors, (42) Word has length 1065 [2024-11-19 11:08:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 11:08:28,620 INFO L225 Difference]: With dead ends: 184 [2024-11-19 11:08:28,620 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 11:08:28,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2346 GetRequests, 2094 SyntacticMatches, 192 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7041 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=852, Invalid=2930, Unknown=0, NotChecked=0, Total=3782 [2024-11-19 11:08:28,622 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 11:08:28,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 248 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 11:08:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 11:08:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 11:08:28,623 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) [2024-11-19 11:08:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 11:08:28,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1065 [2024-11-19 11:08:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 11:08:28,623 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 11:08:28,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 2.5833333333333335) internal successors, (155), 61 states have internal predecessors, (155), 16 states have call successors, (17), 1 states have call predecessors, (17), 17 states have return successors, (42), 42 states have call predecessors, (42), 16 states have call successors, (42) [2024-11-19 11:08:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 11:08:28,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 11:08:28,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-19 11:08:28,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-19 11:08:28,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-19 11:08:28,627 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-19 11:08:28,628 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-19 11:08:28,628 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-19 11:08:28,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 11:08:28,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 11:08:28,834 INFO L407 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1] [2024-11-19 11:08:28,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-19 11:08:29,629 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 11:08:29,652 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-19 11:08:29,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 11:08:29 BoogieIcfgContainer [2024-11-19 11:08:29,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 11:08:29,656 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 11:08:29,656 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 11:08:29,657 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 11:08:29,657 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:21" (3/4) ... [2024-11-19 11:08:29,658 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 11:08:29,661 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2024-11-19 11:08:29,664 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-19 11:08:29,664 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-19 11:08:29,664 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 11:08:29,664 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 11:08:29,731 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 11:08:29,731 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 11:08:29,731 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 11:08:29,732 INFO L158 Benchmark]: Toolchain (without parser) took 68471.62ms. Allocated memory was 184.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 116.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2024-11-19 11:08:29,732 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 11:08:29,732 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.77ms. Allocated memory is still 184.5MB. Free memory was 116.2MB in the beginning and 104.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 11:08:29,732 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.40ms. Allocated memory is still 184.5MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 11:08:29,732 INFO L158 Benchmark]: Boogie Preprocessor took 22.89ms. Allocated memory is still 184.5MB. Free memory was 103.0MB in the beginning and 101.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 11:08:29,732 INFO L158 Benchmark]: RCFGBuilder took 270.95ms. Allocated memory is still 184.5MB. Free memory was 101.5MB in the beginning and 90.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-19 11:08:29,733 INFO L158 Benchmark]: TraceAbstraction took 67881.60ms. Allocated memory was 184.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 89.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-19 11:08:29,733 INFO L158 Benchmark]: Witness Printer took 75.05ms. Allocated memory is still 1.9GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 11:08:29,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.77ms. Allocated memory is still 184.5MB. Free memory was 116.2MB in the beginning and 104.4MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.40ms. Allocated memory is still 184.5MB. Free memory was 104.4MB in the beginning and 103.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.89ms. Allocated memory is still 184.5MB. Free memory was 103.0MB in the beginning and 101.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.95ms. Allocated memory is still 184.5MB. Free memory was 101.5MB in the beginning and 90.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 67881.60ms. Allocated memory was 184.5MB in the beginning and 1.9GB in the end (delta: 1.7GB). Free memory was 89.4MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 75.05ms. Allocated memory is still 1.9GB. Free memory was 1.8GB in the beginning and 1.8GB 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 67.0s, OverallIterations: 16, TraceHistogramMax: 109, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1079 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1050 mSDsluCounter, 2526 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2114 mSDsCounter, 266 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2956 IncrementalHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 266 mSolverCounterUnsat, 412 mSDtfsCounter, 2956 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4875 GetRequests, 4247 SyntacticMatches, 302 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10538 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=8, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 158 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 59.8s InterpolantComputationTime, 4612 NumberOfCodeBlocks, 4424 NumberOfCodeBlocksAsserted, 228 NumberOfCheckSat, 6705 ConstructedInterpolants, 0 QuantifiedInterpolants, 15796 SizeOfPredicates, 19 NumberOfNonLiveVariables, 4218 ConjunctsInSsa, 413 ConjunctsInUnsatCore, 38 InterpolantComputations, 6 PerfectInterpolantSequences, 120613/150650 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: 16]: Procedure Contract for fibonacci Derived contract for procedure fibonacci. Requires: (n <= 9) Ensures: ((((\result < 4) || (4 < n)) && ((\result < 6) || (5 < n))) && (n <= 9)) RESULT: Ultimate proved your program to be correct! [2024-11-19 11:08:29,759 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