./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci05.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 97829031814878890268a6b8dbba5c3e987e2ec78ab2dc94181f9e68090060bd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:03:39,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:03:39,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:03:39,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:03:39,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:03:39,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:03:39,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:03:39,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:03:39,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:03:39,824 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:03:39,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:03:39,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:03:39,824 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:03:39,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:03:39,825 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:03:39,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:03:39,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:03:39,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:03:39,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:03:39,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:03:39,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:03:39,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:03:39,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:03:39,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:03:39,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:03:39,828 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:03:39,829 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:03:39,829 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:03:39,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:03:39,830 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:03:39,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:03:39,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:03:39,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:03:39,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:03:39,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:03:39,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:03:39,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:03:39,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:03:39,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:03:39,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:03:39,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:03:39,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:03:39,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:03:39,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:03:39,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97829031814878890268a6b8dbba5c3e987e2ec78ab2dc94181f9e68090060bd [2024-11-22 23:03:40,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:03:40,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:03:40,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:03:40,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:03:40,042 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:03:40,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci05.c [2024-11-22 23:03:41,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:03:41,466 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:03:41,466 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci05.c [2024-11-22 23:03:41,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddcd0660/b3524fbccaa8498a802f27fa1c893d11/FLAG437e5353b [2024-11-22 23:03:41,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddcd0660/b3524fbccaa8498a802f27fa1c893d11 [2024-11-22 23:03:41,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:03:41,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:03:41,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:03:41,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:03:41,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:03:41,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3b53f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41, skipping insertion in model container [2024-11-22 23:03:41,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:03:41,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:03:41,676 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:03:41,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:03:41,701 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:03:41,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41 WrapperNode [2024-11-22 23:03:41,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:03:41,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:03:41,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:03:41,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:03:41,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,722 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2024-11-22 23:03:41,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:03:41,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:03:41,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:03:41,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:03:41,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,757 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 23:03:41,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:03:41,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:03:41,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:03:41,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:03:41,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (1/1) ... [2024-11-22 23:03:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:03:41,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:41,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 23:03:41,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 23:03:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-22 23:03:41,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-22 23:03:41,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:03:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:03:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:03:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:03:41,888 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:03:41,890 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:03:41,994 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-22 23:03:41,995 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:03:42,006 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:03:42,006 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 23:03:42,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:03:42 BoogieIcfgContainer [2024-11-22 23:03:42,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:03:42,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:03:42,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:03:42,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:03:42,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:03:41" (1/3) ... [2024-11-22 23:03:42,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4d6ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:03:42, skipping insertion in model container [2024-11-22 23:03:42,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:03:41" (2/3) ... [2024-11-22 23:03:42,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4d6ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:03:42, skipping insertion in model container [2024-11-22 23:03:42,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:03:42" (3/3) ... [2024-11-22 23:03:42,013 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci05.c [2024-11-22 23:03:42,028 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:03:42,028 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-22 23:03:42,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:03:42,091 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;@1edf8e27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:03:42,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 23:03:42,098 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) [2024-11-22 23:03:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:03:42,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:42,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:42,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:42,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:42,112 INFO L85 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2024-11-22 23:03:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:42,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970734624] [2024-11-22 23:03:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:03:42,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970734624] [2024-11-22 23:03:42,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970734624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:03:42,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:03:42,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:03:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86464392] [2024-11-22 23:03:42,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:03:42,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:03:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:03:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:03:42,272 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) [2024-11-22 23:03:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:42,307 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-22 23:03:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:03:42,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 23:03:42,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:42,315 INFO L225 Difference]: With dead ends: 36 [2024-11-22 23:03:42,316 INFO L226 Difference]: Without dead ends: 24 [2024-11-22 23:03:42,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:03:42,323 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 [2024-11-22 23:03:42,324 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] [2024-11-22 23:03:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-22 23:03:42,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-22 23:03:42,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-22 23:03:42,396 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-22 23:03:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:42,397 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-22 23:03:42,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:03:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-22 23:03:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:03:42,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:42,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:42,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:03:42,399 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:42,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2024-11-22 23:03:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:42,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33973978] [2024-11-22 23:03:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:03:42,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:42,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33973978] [2024-11-22 23:03:42,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33973978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:03:42,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:03:42,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:03:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570132595] [2024-11-22 23:03:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:03:42,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:03:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:03:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:03:42,503 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:03:42,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:42,589 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-22 23:03:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:03:42,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 23:03:42,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:42,591 INFO L225 Difference]: With dead ends: 24 [2024-11-22 23:03:42,591 INFO L226 Difference]: Without dead ends: 22 [2024-11-22 23:03:42,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:03:42,594 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-22 23:03:42,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-22 23:03:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-22 23:03:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-22 23:03:42,603 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-22 23:03:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:42,603 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-22 23:03:42,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:03:42,604 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-22 23:03:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 23:03:42,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:42,606 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:42,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:03:42,607 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:42,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2024-11-22 23:03:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323477613] [2024-11-22 23:03:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:03:42,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:42,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323477613] [2024-11-22 23:03:42,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323477613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:03:42,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:03:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:03:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141791703] [2024-11-22 23:03:42,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:03:42,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:03:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:03:42,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:03:42,787 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:42,815 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-22 23:03:42,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:03:42,817 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 [2024-11-22 23:03:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:42,817 INFO L225 Difference]: With dead ends: 34 [2024-11-22 23:03:42,818 INFO L226 Difference]: Without dead ends: 32 [2024-11-22 23:03:42,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:03:42,819 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 [2024-11-22 23:03:42,819 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] [2024-11-22 23:03:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-22 23:03:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-22 23:03:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 23:03:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-22 23:03:42,829 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2024-11-22 23:03:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:42,830 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-22 23:03:42,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-22 23:03:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:03:42,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:42,831 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:42,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:03:42,832 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:42,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1274820555, now seen corresponding path program 1 times [2024-11-22 23:03:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234944233] [2024-11-22 23:03:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:03:42,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:42,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234944233] [2024-11-22 23:03:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234944233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203165473] [2024-11-22 23:03:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:42,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:42,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:42,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:03:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:42,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 23:03:42,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 23:03:43,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 23:03:43,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203165473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:43,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:43,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-22 23:03:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348794715] [2024-11-22 23:03:43,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:43,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:03:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:03:43,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:03:43,190 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:03:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:43,393 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2024-11-22 23:03:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:03:43,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2024-11-22 23:03:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:43,395 INFO L225 Difference]: With dead ends: 90 [2024-11-22 23:03:43,395 INFO L226 Difference]: Without dead ends: 64 [2024-11-22 23:03:43,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-22 23:03:43,397 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:43,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 94 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-22 23:03:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2024-11-22 23:03:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-22 23:03:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-11-22 23:03:43,427 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2024-11-22 23:03:43,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:43,427 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-11-22 23:03:43,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-22 23:03:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-11-22 23:03:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:03:43,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:43,429 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:43,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 23:03:43,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:43,630 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:43,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -254150789, now seen corresponding path program 2 times [2024-11-22 23:03:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:43,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845812312] [2024-11-22 23:03:43,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:03:43,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:43,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:03:43,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:03:43,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:43,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845812312] [2024-11-22 23:03:43,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845812312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:43,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913596935] [2024-11-22 23:03:43,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:03:43,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:43,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:43,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:43,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:03:43,789 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:03:43,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:43,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 23:03:43,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:03:43,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:03:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913596935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:03:43,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:03:43,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-22 23:03:43,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396710102] [2024-11-22 23:03:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:03:43,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:03:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:03:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:03:43,822 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:43,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:43,849 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-22 23:03:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:03:43,849 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 24 [2024-11-22 23:03:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:43,850 INFO L225 Difference]: With dead ends: 59 [2024-11-22 23:03:43,850 INFO L226 Difference]: Without dead ends: 58 [2024-11-22 23:03:43,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:03:43,851 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:43,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:03:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-22 23:03:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-22 23:03:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-22 23:03:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-11-22 23:03:43,859 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2024-11-22 23:03:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:43,860 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-11-22 23:03:43,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-11-22 23:03:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:03:43,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:43,861 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:43,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 23:03:44,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:44,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:44,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1092136320, now seen corresponding path program 1 times [2024-11-22 23:03:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563606393] [2024-11-22 23:03:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:44,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:03:44,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563606393] [2024-11-22 23:03:44,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563606393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601303736] [2024-11-22 23:03:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:44,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:44,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:03:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:44,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 23:03:44,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:03:44,196 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:03:44,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601303736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:03:44,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:03:44,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-22 23:03:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117860992] [2024-11-22 23:03:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:03:44,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:03:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:03:44,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:03:44,198 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:44,224 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2024-11-22 23:03:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:03:44,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-22 23:03:44,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:44,226 INFO L225 Difference]: With dead ends: 81 [2024-11-22 23:03:44,226 INFO L226 Difference]: Without dead ends: 80 [2024-11-22 23:03:44,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:03:44,227 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:44,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:03:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-22 23:03:44,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2024-11-22 23:03:44,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2024-11-22 23:03:44,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-11-22 23:03:44,237 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2024-11-22 23:03:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:44,238 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-11-22 23:03:44,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:03:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-11-22 23:03:44,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 23:03:44,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:44,239 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:03:44,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 23:03:44,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:44,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:44,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash -940023341, now seen corresponding path program 1 times [2024-11-22 23:03:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:44,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671610633] [2024-11-22 23:03:44,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:44,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-22 23:03:44,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671610633] [2024-11-22 23:03:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671610633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544573924] [2024-11-22 23:03:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:44,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:44,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:44,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:44,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:03:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:44,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 23:03:44,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-22 23:03:44,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 23:03:44,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544573924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:44,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:44,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-22 23:03:44,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139808] [2024-11-22 23:03:44,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:44,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 23:03:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:44,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 23:03:44,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:03:44,881 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:03:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:45,021 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2024-11-22 23:03:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 23:03:45,022 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 51 [2024-11-22 23:03:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:45,024 INFO L225 Difference]: With dead ends: 140 [2024-11-22 23:03:45,024 INFO L226 Difference]: Without dead ends: 138 [2024-11-22 23:03:45,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:03:45,025 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:45,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 185 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-22 23:03:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2024-11-22 23:03:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.08) internal successors, (81), 74 states have internal predecessors, (81), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2024-11-22 23:03:45,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2024-11-22 23:03:45,040 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 51 [2024-11-22 23:03:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:45,040 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2024-11-22 23:03:45,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:03:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2024-11-22 23:03:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 23:03:45,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:45,042 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 23:03:45,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 23:03:45,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:45,247 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:45,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash 299475883, now seen corresponding path program 1 times [2024-11-22 23:03:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:45,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735222703] [2024-11-22 23:03:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:45,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 23:03:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735222703] [2024-11-22 23:03:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735222703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:45,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014442768] [2024-11-22 23:03:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:03:45,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:45,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:45,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:45,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:03:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:45,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:03:45,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 23:03:45,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-22 23:03:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014442768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:45,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 18 [2024-11-22 23:03:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38691538] [2024-11-22 23:03:45,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:45,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 23:03:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 23:03:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:03:45,623 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 7 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:03:46,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:46,054 INFO L93 Difference]: Finished difference Result 256 states and 503 transitions. [2024-11-22 23:03:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 23:03:46,055 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 7 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 62 [2024-11-22 23:03:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:46,056 INFO L225 Difference]: With dead ends: 256 [2024-11-22 23:03:46,056 INFO L226 Difference]: Without dead ends: 162 [2024-11-22 23:03:46,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1473, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 23:03:46,060 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 104 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:46,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 70 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:03:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-22 23:03:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 102. [2024-11-22 23:03:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 79 states have internal predecessors, (83), 12 states have call successors, (12), 3 states have call predecessors, (12), 10 states have return successors, (75), 19 states have call predecessors, (75), 11 states have call successors, (75) [2024-11-22 23:03:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 170 transitions. [2024-11-22 23:03:46,077 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 170 transitions. Word has length 62 [2024-11-22 23:03:46,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:46,077 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 170 transitions. [2024-11-22 23:03:46,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7222222222222223) internal successors, (67), 18 states have internal predecessors, (67), 7 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:03:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 170 transitions. [2024-11-22 23:03:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-22 23:03:46,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:46,081 INFO L215 NwaCegarLoop]: trace histogram [20, 17, 14, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 7, 6, 4, 1, 1, 1, 1] [2024-11-22 23:03:46,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 23:03:46,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:46,282 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:46,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1115702859, now seen corresponding path program 2 times [2024-11-22 23:03:46,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:46,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432575880] [2024-11-22 23:03:46,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:03:46,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:46,306 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:03:46,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:46,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 112 proven. 278 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-22 23:03:46,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:46,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432575880] [2024-11-22 23:03:46,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432575880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:46,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186791192] [2024-11-22 23:03:46,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:03:46,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:46,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:46,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:46,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:03:46,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:03:46,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:46,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:03:46,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 511 proven. 15 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2024-11-22 23:03:46,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 115 proven. 328 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2024-11-22 23:03:46,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186791192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:46,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:46,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-22 23:03:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078014278] [2024-11-22 23:03:46,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:46,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 23:03:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 23:03:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-22 23:03:46,806 INFO L87 Difference]: Start difference. First operand 102 states and 170 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:03:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:46,894 INFO L93 Difference]: Finished difference Result 154 states and 260 transitions. [2024-11-22 23:03:46,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:03:46,895 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 181 [2024-11-22 23:03:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:46,897 INFO L225 Difference]: With dead ends: 154 [2024-11-22 23:03:46,897 INFO L226 Difference]: Without dead ends: 55 [2024-11-22 23:03:46,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:03:46,899 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:46,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 63 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:03:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-22 23:03:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-22 23:03:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-22 23:03:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-22 23:03:46,908 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 181 [2024-11-22 23:03:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:46,909 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-22 23:03:46,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:03:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-22 23:03:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-22 23:03:46,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:46,912 INFO L215 NwaCegarLoop]: trace histogram [19, 17, 16, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 3, 1, 1, 1, 1] [2024-11-22 23:03:46,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 23:03:47,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:47,114 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:47,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash -31735154, now seen corresponding path program 3 times [2024-11-22 23:03:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011370766] [2024-11-22 23:03:47,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:03:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:47,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 23:03:47,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 325 proven. 18 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-22 23:03:47,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011370766] [2024-11-22 23:03:47,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011370766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784560301] [2024-11-22 23:03:47,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:03:47,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:47,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:47,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:47,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:03:47,248 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 23:03:47,248 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:47,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:03:47,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 322 proven. 21 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-22 23:03:47,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 322 proven. 22 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2024-11-22 23:03:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784560301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:47,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:47,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 12 [2024-11-22 23:03:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349150859] [2024-11-22 23:03:47,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:47,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 23:03:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 23:03:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:03:47,911 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:03:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:48,030 INFO L93 Difference]: Finished difference Result 107 states and 131 transitions. [2024-11-22 23:03:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:03:48,030 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 178 [2024-11-22 23:03:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:48,032 INFO L225 Difference]: With dead ends: 107 [2024-11-22 23:03:48,036 INFO L226 Difference]: Without dead ends: 57 [2024-11-22 23:03:48,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 350 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:03:48,037 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:48,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 88 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-22 23:03:48,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-22 23:03:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-22 23:03:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-22 23:03:48,050 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 178 [2024-11-22 23:03:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:48,050 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-22 23:03:48,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:03:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-22 23:03:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-22 23:03:48,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:48,051 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1] [2024-11-22 23:03:48,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 23:03:48,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:48,252 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:48,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1067637415, now seen corresponding path program 4 times [2024-11-22 23:03:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:48,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353959125] [2024-11-22 23:03:48,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:03:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:48,266 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:03:48,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 72 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-22 23:03:48,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353959125] [2024-11-22 23:03:48,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353959125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:48,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881875020] [2024-11-22 23:03:48,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:03:48,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:48,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:48,435 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:03:48,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:03:48,475 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:03:48,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:48,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:03:48,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-22 23:03:48,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-22 23:03:49,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881875020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:49,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:49,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-22 23:03:49,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919167909] [2024-11-22 23:03:49,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:49,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:03:49,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:03:49,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:03:49,005 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-22 23:03:49,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:49,190 INFO L93 Difference]: Finished difference Result 120 states and 146 transitions. [2024-11-22 23:03:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 23:03:49,191 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 104 [2024-11-22 23:03:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:49,192 INFO L225 Difference]: With dead ends: 120 [2024-11-22 23:03:49,192 INFO L226 Difference]: Without dead ends: 70 [2024-11-22 23:03:49,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 200 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-22 23:03:49,193 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 121 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:49,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 100 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:49,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-22 23:03:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2024-11-22 23:03:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-22 23:03:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2024-11-22 23:03:49,200 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 104 [2024-11-22 23:03:49,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:49,200 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2024-11-22 23:03:49,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-22 23:03:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2024-11-22 23:03:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-22 23:03:49,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:49,204 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2024-11-22 23:03:49,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 23:03:49,404 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,SelfDestructingSolverStorable10 [2024-11-22 23:03:49,405 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:49,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1573226011, now seen corresponding path program 5 times [2024-11-22 23:03:49,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:49,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270360102] [2024-11-22 23:03:49,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:03:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:49,420 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-22 23:03:49,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 113 proven. 159 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-22 23:03:49,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:49,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270360102] [2024-11-22 23:03:49,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270360102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:49,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589299912] [2024-11-22 23:03:49,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:03:49,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:49,849 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) [2024-11-22 23:03:49,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 23:03:49,902 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-22 23:03:49,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:49,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:03:49,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-11-22 23:03:50,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-22 23:03:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589299912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:51,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:51,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 17] total 32 [2024-11-22 23:03:51,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902635530] [2024-11-22 23:03:51,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:51,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-22 23:03:51,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-22 23:03:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 23:03:51,066 INFO L87 Difference]: Start difference. First operand 61 states and 70 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) [2024-11-22 23:03:51,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:51,323 INFO L93 Difference]: Finished difference Result 125 states and 178 transitions. [2024-11-22 23:03:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 23:03:51,327 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 143 [2024-11-22 23:03:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:51,328 INFO L225 Difference]: With dead ends: 125 [2024-11-22 23:03:51,329 INFO L226 Difference]: Without dead ends: 124 [2024-11-22 23:03:51,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 267 SyntacticMatches, 15 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=414, Invalid=1308, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 23:03:51,330 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:51,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 248 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-22 23:03:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 97. [2024-11-22 23:03:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 75 states have internal predecessors, (80), 11 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2024-11-22 23:03:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2024-11-22 23:03:51,344 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 143 [2024-11-22 23:03:51,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:51,345 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2024-11-22 23:03:51,345 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) [2024-11-22 23:03:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2024-11-22 23:03:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-22 23:03:51,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:51,351 INFO L215 NwaCegarLoop]: trace histogram [46, 43, 37, 23, 23, 23, 23, 22, 22, 22, 22, 22, 21, 21, 21, 20, 14, 9, 1, 1, 1, 1] [2024-11-22 23:03:51,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 23:03:51,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:51,556 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:51,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash 622744332, now seen corresponding path program 6 times [2024-11-22 23:03:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:51,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370501034] [2024-11-22 23:03:51,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 23:03:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:51,604 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 23:03:51,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6855 backedges. 437 proven. 1573 refuted. 0 times theorem prover too weak. 4845 trivial. 0 not checked. [2024-11-22 23:03:51,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370501034] [2024-11-22 23:03:51,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370501034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:51,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149291077] [2024-11-22 23:03:51,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 23:03:51,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:51,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:51,889 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) [2024-11-22 23:03:51,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 23:03:52,007 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 23:03:52,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:52,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 23:03:52,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6855 backedges. 3806 proven. 354 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2024-11-22 23:03:52,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6855 backedges. 444 proven. 1614 refuted. 0 times theorem prover too weak. 4797 trivial. 0 not checked. [2024-11-22 23:03:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149291077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:53,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:53,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 17] total 23 [2024-11-22 23:03:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708605673] [2024-11-22 23:03:53,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:53,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 23:03:53,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 23:03:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-11-22 23:03:53,497 INFO L87 Difference]: Start difference. First operand 97 states and 138 transitions. Second operand has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 14 states have call successors, (22), 4 states have call predecessors, (22), 10 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-22 23:03:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:53,796 INFO L93 Difference]: Finished difference Result 264 states and 414 transitions. [2024-11-22 23:03:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 23:03:53,797 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 14 states have call successors, (22), 4 states have call predecessors, (22), 10 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) Word has length 438 [2024-11-22 23:03:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:53,799 INFO L225 Difference]: With dead ends: 264 [2024-11-22 23:03:53,799 INFO L226 Difference]: Without dead ends: 172 [2024-11-22 23:03:53,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 868 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=446, Invalid=1276, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 23:03:53,801 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 241 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:53,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 142 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:03:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-22 23:03:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2024-11-22 23:03:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 120 states have (on average 1.0666666666666667) internal successors, (128), 117 states have internal predecessors, (128), 17 states have call successors, (17), 7 states have call predecessors, (17), 13 states have return successors, (51), 26 states have call predecessors, (51), 16 states have call successors, (51) [2024-11-22 23:03:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 196 transitions. [2024-11-22 23:03:53,813 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 196 transitions. Word has length 438 [2024-11-22 23:03:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:53,814 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 196 transitions. [2024-11-22 23:03:53,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 14 states have call successors, (22), 4 states have call predecessors, (22), 10 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-22 23:03:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 196 transitions. [2024-11-22 23:03:53,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-22 23:03:53,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:53,817 INFO L215 NwaCegarLoop]: trace histogram [30, 28, 24, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 9, 6, 1, 1, 1, 1] [2024-11-22 23:03:53,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 23:03:54,021 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,SelfDestructingSolverStorable12 [2024-11-22 23:03:54,022 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:54,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2077544003, now seen corresponding path program 7 times [2024-11-22 23:03:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:54,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830385561] [2024-11-22 23:03:54,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 23:03:54,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 381 proven. 813 refuted. 0 times theorem prover too weak. 1660 trivial. 0 not checked. [2024-11-22 23:03:54,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830385561] [2024-11-22 23:03:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830385561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401703609] [2024-11-22 23:03:54,267 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 23:03:54,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:54,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:54,268 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) [2024-11-22 23:03:54,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:03:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:03:54,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:03:54,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 1664 proven. 182 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2024-11-22 23:03:54,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:55,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2854 backedges. 383 proven. 900 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2024-11-22 23:03:55,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401703609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:55,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:55,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-22 23:03:55,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89076097] [2024-11-22 23:03:55,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:55,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:03:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:55,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:03:55,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:03:55,361 INFO L87 Difference]: Start difference. First operand 151 states and 196 transitions. Second operand has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 14 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (22), 8 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-22 23:03:55,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:55,561 INFO L93 Difference]: Finished difference Result 276 states and 387 transitions. [2024-11-22 23:03:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:03:55,562 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 14 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (22), 8 states have call predecessors, (22), 14 states have call successors, (22) Word has length 286 [2024-11-22 23:03:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:55,563 INFO L225 Difference]: With dead ends: 276 [2024-11-22 23:03:55,563 INFO L226 Difference]: Without dead ends: 130 [2024-11-22 23:03:55,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 561 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:03:55,565 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:55,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 136 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-22 23:03:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-22 23:03:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 101 states have internal predecessors, (110), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (37), 17 states have call predecessors, (37), 14 states have call successors, (37) [2024-11-22 23:03:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-11-22 23:03:55,576 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 286 [2024-11-22 23:03:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:55,576 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-11-22 23:03:55,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.5) internal successors, (110), 20 states have internal predecessors, (110), 14 states have call successors, (19), 2 states have call predecessors, (19), 8 states have return successors, (22), 8 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-22 23:03:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-11-22 23:03:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-22 23:03:55,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:55,579 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1] [2024-11-22 23:03:55,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 23:03:55,783 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,SelfDestructingSolverStorable13 [2024-11-22 23:03:55,784 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:55,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:55,784 INFO L85 PathProgramCache]: Analyzing trace with hash -816198827, now seen corresponding path program 8 times [2024-11-22 23:03:55,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:55,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262241524] [2024-11-22 23:03:55,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:03:55,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:55,818 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:03:55,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:56,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 522 proven. 990 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2024-11-22 23:03:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:03:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262241524] [2024-11-22 23:03:56,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262241524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:03:56,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946388049] [2024-11-22 23:03:56,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:03:56,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:03:56,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:03:56,080 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) [2024-11-22 23:03:56,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:03:56,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:03:56,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:03:56,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 23:03:56,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:03:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1787 proven. 484 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2024-11-22 23:03:56,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:03:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 517 proven. 1101 refuted. 0 times theorem prover too weak. 1532 trivial. 0 not checked. [2024-11-22 23:03:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946388049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:03:57,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:03:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2024-11-22 23:03:57,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928596363] [2024-11-22 23:03:57,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:03:57,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 23:03:57,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:03:57,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 23:03:57,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-22 23:03:57,413 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-22 23:03:57,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:03:57,646 INFO L93 Difference]: Finished difference Result 243 states and 316 transitions. [2024-11-22 23:03:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 23:03:57,646 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) Word has length 300 [2024-11-22 23:03:57,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:03:57,647 INFO L225 Difference]: With dead ends: 243 [2024-11-22 23:03:57,647 INFO L226 Difference]: Without dead ends: 118 [2024-11-22 23:03:57,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 587 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 23:03:57,648 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 61 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:03:57,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 166 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:03:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-22 23:03:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-22 23:03:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-22 23:03:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2024-11-22 23:03:57,654 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 300 [2024-11-22 23:03:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:03:57,654 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2024-11-22 23:03:57,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-22 23:03:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2024-11-22 23:03:57,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2024-11-22 23:03:57,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:03:57,664 INFO L215 NwaCegarLoop]: trace histogram [79, 75, 64, 40, 40, 40, 40, 38, 38, 38, 38, 38, 37, 37, 37, 36, 24, 15, 1, 1, 1, 1] [2024-11-22 23:03:57,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 23:03:57,868 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,SelfDestructingSolverStorable14 [2024-11-22 23:03:57,869 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:03:57,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:03:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash -490990757, now seen corresponding path program 9 times [2024-11-22 23:03:57,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:03:57,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340559025] [2024-11-22 23:03:57,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:03:57,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:03:57,973 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-22 23:03:57,977 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20878 backedges. 6050 proven. 2338 refuted. 0 times theorem prover too weak. 12490 trivial. 0 not checked. [2024-11-22 23:04:00,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340559025] [2024-11-22 23:04:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340559025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:00,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976928501] [2024-11-22 23:04:00,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:04:00,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:00,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:00,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:00,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 23:04:00,705 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-22 23:04:00,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:00,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-22 23:04:00,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20878 backedges. 6012 proven. 1736 refuted. 0 times theorem prover too weak. 13130 trivial. 0 not checked. [2024-11-22 23:04:01,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 20878 backedges. 6479 proven. 1574 refuted. 0 times theorem prover too weak. 12825 trivial. 0 not checked. [2024-11-22 23:04:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976928501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:09,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:09,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 32] total 46 [2024-11-22 23:04:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511991828] [2024-11-22 23:04:09,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:09,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-22 23:04:09,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-22 23:04:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=1667, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 23:04:09,358 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-22 23:04:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:09,595 INFO L93 Difference]: Finished difference Result 167 states and 239 transitions. [2024-11-22 23:04:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 23:04:09,596 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 758 [2024-11-22 23:04:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:09,598 INFO L225 Difference]: With dead ends: 167 [2024-11-22 23:04:09,598 INFO L226 Difference]: Without dead ends: 166 [2024-11-22 23:04:09,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1502 SyntacticMatches, 68 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3208 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=663, Invalid=2307, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 23:04:09,599 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:09,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 217 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:04:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-22 23:04:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 142. [2024-11-22 23:04:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 113 states have (on average 1.0265486725663717) internal successors, (116), 111 states have internal predecessors, (116), 17 states have call successors, (17), 10 states have call predecessors, (17), 11 states have return successors, (70), 20 states have call predecessors, (70), 16 states have call successors, (70) [2024-11-22 23:04:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2024-11-22 23:04:09,607 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 758 [2024-11-22 23:04:09,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:09,608 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2024-11-22 23:04:09,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.8260869565217392) internal successors, (130), 47 states have internal predecessors, (130), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-22 23:04:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2024-11-22 23:04:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2024-11-22 23:04:09,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:09,613 INFO L215 NwaCegarLoop]: trace histogram [104, 102, 84, 52, 52, 52, 52, 51, 51, 51, 51, 51, 51, 51, 51, 50, 32, 20, 1, 1, 1, 1] [2024-11-22 23:04:09,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 23:04:09,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 23:04:09,813 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:04:09,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:09,814 INFO L85 PathProgramCache]: Analyzing trace with hash -936640076, now seen corresponding path program 10 times [2024-11-22 23:04:09,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:09,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584074005] [2024-11-22 23:04:09,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:04:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:09,880 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:04:09,880 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 37403 backedges. 1527 proven. 6552 refuted. 0 times theorem prover too weak. 29324 trivial. 0 not checked. [2024-11-22 23:04:10,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:10,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584074005] [2024-11-22 23:04:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584074005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:10,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989601878] [2024-11-22 23:04:10,380 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:04:10,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:10,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:10,382 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:10,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 23:04:10,654 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:04:10,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:10,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 23:04:10,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 37403 backedges. 1795 proven. 7738 refuted. 0 times theorem prover too weak. 27870 trivial. 0 not checked. [2024-11-22 23:04:10,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 37403 backedges. 1795 proven. 7853 refuted. 0 times theorem prover too weak. 27755 trivial. 0 not checked. [2024-11-22 23:04:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989601878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:13,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:13,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-22 23:04:13,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433912523] [2024-11-22 23:04:13,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:13,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 23:04:13,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 23:04:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-22 23:04:13,439 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-22 23:04:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:13,885 INFO L93 Difference]: Finished difference Result 346 states and 571 transitions. [2024-11-22 23:04:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 23:04:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) Word has length 1012 [2024-11-22 23:04:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:13,889 INFO L225 Difference]: With dead ends: 346 [2024-11-22 23:04:13,890 INFO L226 Difference]: Without dead ends: 209 [2024-11-22 23:04:13,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 2007 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 23:04:13,892 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 446 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:13,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 172 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:04:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-22 23:04:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2024-11-22 23:04:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 155 states have (on average 1.032258064516129) internal successors, (160), 151 states have internal predecessors, (160), 23 states have call successors, (23), 14 states have call predecessors, (23), 14 states have return successors, (90), 27 states have call predecessors, (90), 22 states have call successors, (90) [2024-11-22 23:04:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 273 transitions. [2024-11-22 23:04:13,905 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 273 transitions. Word has length 1012 [2024-11-22 23:04:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:13,906 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 273 transitions. [2024-11-22 23:04:13,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.65625) internal successors, (181), 32 states have internal predecessors, (181), 26 states have call successors, (31), 1 states have call predecessors, (31), 13 states have return successors, (40), 16 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-22 23:04:13,906 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 273 transitions. [2024-11-22 23:04:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1111 [2024-11-22 23:04:13,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:13,912 INFO L215 NwaCegarLoop]: trace histogram [114, 112, 92, 57, 57, 57, 57, 56, 56, 56, 56, 56, 56, 56, 56, 55, 35, 22, 1, 1, 1, 1] [2024-11-22 23:04:13,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 23:04:14,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:14,117 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:04:14,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1652847305, now seen corresponding path program 11 times [2024-11-22 23:04:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:14,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391573934] [2024-11-22 23:04:14,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:04:14,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:14,235 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 62 check-sat command(s) [2024-11-22 23:04:14,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 45068 backedges. 1952 proven. 6722 refuted. 0 times theorem prover too weak. 36394 trivial. 0 not checked. [2024-11-22 23:04:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391573934] [2024-11-22 23:04:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391573934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312554172] [2024-11-22 23:04:14,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:04:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:14,815 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:14,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 23:04:15,181 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 62 check-sat command(s) [2024-11-22 23:04:15,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:15,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 23:04:15,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45068 backedges. 21109 proven. 640 refuted. 0 times theorem prover too weak. 23319 trivial. 0 not checked. [2024-11-22 23:04:15,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 45068 backedges. 1952 proven. 6777 refuted. 0 times theorem prover too weak. 36339 trivial. 0 not checked. [2024-11-22 23:04:17,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312554172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:17,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:17,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 23 [2024-11-22 23:04:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229583447] [2024-11-22 23:04:17,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:17,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 23:04:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:17,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 23:04:17,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-22 23:04:17,631 INFO L87 Difference]: Start difference. First operand 193 states and 273 transitions. Second operand has 23 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 18 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 23:04:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:17,863 INFO L93 Difference]: Finished difference Result 354 states and 521 transitions. [2024-11-22 23:04:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 23:04:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 18 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 1110 [2024-11-22 23:04:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:17,865 INFO L225 Difference]: With dead ends: 354 [2024-11-22 23:04:17,865 INFO L226 Difference]: Without dead ends: 166 [2024-11-22 23:04:17,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2254 GetRequests, 2209 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=361, Invalid=971, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 23:04:17,867 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 121 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:17,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 162 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:04:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-22 23:04:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2024-11-22 23:04:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 124 states have (on average 1.032258064516129) internal successors, (128), 121 states have internal predecessors, (128), 19 states have call successors, (19), 14 states have call predecessors, (19), 10 states have return successors, (49), 18 states have call predecessors, (49), 18 states have call successors, (49) [2024-11-22 23:04:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 196 transitions. [2024-11-22 23:04:17,874 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 196 transitions. Word has length 1110 [2024-11-22 23:04:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:17,875 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 196 transitions. [2024-11-22 23:04:17,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.130434782608695) internal successors, (141), 23 states have internal predecessors, (141), 18 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 23:04:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 196 transitions. [2024-11-22 23:04:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2024-11-22 23:04:17,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:17,881 INFO L215 NwaCegarLoop]: trace histogram [127, 123, 103, 64, 64, 64, 64, 62, 62, 62, 62, 62, 61, 61, 61, 60, 39, 24, 1, 1, 1, 1] [2024-11-22 23:04:17,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 23:04:18,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 23:04:18,086 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:04:18,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash 693139185, now seen corresponding path program 12 times [2024-11-22 23:04:18,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:18,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854239865] [2024-11-22 23:04:18,086 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 23:04:18,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:18,208 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2024-11-22 23:04:18,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 55363 backedges. 3989 proven. 8470 refuted. 0 times theorem prover too weak. 42904 trivial. 0 not checked. [2024-11-22 23:04:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854239865] [2024-11-22 23:04:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854239865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592106239] [2024-11-22 23:04:19,105 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 23:04:19,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:19,107 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:19,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 23:04:19,504 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2024-11-22 23:04:19,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:19,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 1531 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 23:04:19,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 55363 backedges. 28460 proven. 4291 refuted. 0 times theorem prover too weak. 22612 trivial. 0 not checked. [2024-11-22 23:04:19,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 55363 backedges. 4130 proven. 8972 refuted. 0 times theorem prover too weak. 42261 trivial. 0 not checked. [2024-11-22 23:04:22,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592106239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:22,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:22,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 31] total 39 [2024-11-22 23:04:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427656995] [2024-11-22 23:04:22,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:22,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-22 23:04:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-22 23:04:22,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1255, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 23:04:22,597 INFO L87 Difference]: Start difference. First operand 154 states and 196 transitions. Second operand has 39 states, 39 states have (on average 5.666666666666667) internal successors, (221), 38 states have internal predecessors, (221), 32 states have call successors, (40), 5 states have call predecessors, (40), 15 states have return successors, (45), 18 states have call predecessors, (45), 29 states have call successors, (45) [2024-11-22 23:04:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:23,283 INFO L93 Difference]: Finished difference Result 386 states and 558 transitions. [2024-11-22 23:04:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-22 23:04:23,284 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.666666666666667) internal successors, (221), 38 states have internal predecessors, (221), 32 states have call successors, (40), 5 states have call predecessors, (40), 15 states have return successors, (45), 18 states have call predecessors, (45), 29 states have call successors, (45) Word has length 1229 [2024-11-22 23:04:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:23,286 INFO L225 Difference]: With dead ends: 386 [2024-11-22 23:04:23,286 INFO L226 Difference]: Without dead ends: 237 [2024-11-22 23:04:23,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2536 GetRequests, 2442 SyntacticMatches, 14 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1544, Invalid=5098, Unknown=0, NotChecked=0, Total=6642 [2024-11-22 23:04:23,289 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 608 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:23,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 217 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:04:23,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-22 23:04:23,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 220. [2024-11-22 23:04:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 179 states have (on average 1.0446927374301676) internal successors, (187), 174 states have internal predecessors, (187), 28 states have call successors, (28), 22 states have call predecessors, (28), 12 states have return successors, (74), 23 states have call predecessors, (74), 27 states have call successors, (74) [2024-11-22 23:04:23,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 289 transitions. [2024-11-22 23:04:23,299 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 289 transitions. Word has length 1229 [2024-11-22 23:04:23,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:23,300 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 289 transitions. [2024-11-22 23:04:23,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.666666666666667) internal successors, (221), 38 states have internal predecessors, (221), 32 states have call successors, (40), 5 states have call predecessors, (40), 15 states have return successors, (45), 18 states have call predecessors, (45), 29 states have call successors, (45) [2024-11-22 23:04:23,300 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 289 transitions. [2024-11-22 23:04:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 968 [2024-11-22 23:04:23,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:23,304 INFO L215 NwaCegarLoop]: trace histogram [99, 98, 80, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 48, 31, 19, 1, 1, 1, 1] [2024-11-22 23:04:23,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 23:04:23,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:23,509 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:04:23,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash -610566183, now seen corresponding path program 13 times [2024-11-22 23:04:23,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:23,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590037004] [2024-11-22 23:04:23,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 23:04:23,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 34128 backedges. 3250 proven. 6227 refuted. 0 times theorem prover too weak. 24651 trivial. 0 not checked. [2024-11-22 23:04:24,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590037004] [2024-11-22 23:04:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590037004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898787423] [2024-11-22 23:04:24,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 23:04:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:24,375 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:24,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 23:04:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:04:24,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 23:04:24,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 34128 backedges. 18682 proven. 2667 refuted. 0 times theorem prover too weak. 12779 trivial. 0 not checked. [2024-11-22 23:04:24,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 34128 backedges. 2705 proven. 6933 refuted. 0 times theorem prover too weak. 24490 trivial. 0 not checked. [2024-11-22 23:04:28,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898787423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:28,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:28,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 27] total 29 [2024-11-22 23:04:28,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041277092] [2024-11-22 23:04:28,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:28,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 23:04:28,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 23:04:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:04:28,513 INFO L87 Difference]: Start difference. First operand 220 states and 289 transitions. Second operand has 29 states, 29 states have (on average 6.310344827586207) internal successors, (183), 29 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-22 23:04:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:28,863 INFO L93 Difference]: Finished difference Result 453 states and 632 transitions. [2024-11-22 23:04:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 23:04:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.310344827586207) internal successors, (183), 29 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) Word has length 967 [2024-11-22 23:04:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:28,865 INFO L225 Difference]: With dead ends: 453 [2024-11-22 23:04:28,866 INFO L226 Difference]: Without dead ends: 238 [2024-11-22 23:04:28,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1978 GetRequests, 1920 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=560, Invalid=1602, Unknown=0, NotChecked=0, Total=2162 [2024-11-22 23:04:28,872 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 187 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:28,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 243 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:04:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-22 23:04:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 190. [2024-11-22 23:04:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 154 states have (on average 1.0324675324675325) internal successors, (159), 151 states have internal predecessors, (159), 25 states have call successors, (25), 20 states have call predecessors, (25), 10 states have return successors, (63), 18 states have call predecessors, (63), 24 states have call successors, (63) [2024-11-22 23:04:28,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2024-11-22 23:04:28,892 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 967 [2024-11-22 23:04:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:28,892 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2024-11-22 23:04:28,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.310344827586207) internal successors, (183), 29 states have internal predecessors, (183), 26 states have call successors, (31), 2 states have call predecessors, (31), 14 states have return successors, (40), 14 states have call predecessors, (40), 26 states have call successors, (40) [2024-11-22 23:04:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2024-11-22 23:04:28,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2024-11-22 23:04:28,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:28,898 INFO L215 NwaCegarLoop]: trace histogram [94, 92, 76, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 29, 18, 1, 1, 1, 1] [2024-11-22 23:04:28,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 23:04:29,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:29,103 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:04:29,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:29,103 INFO L85 PathProgramCache]: Analyzing trace with hash -501661377, now seen corresponding path program 14 times [2024-11-22 23:04:29,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:29,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92447549] [2024-11-22 23:04:29,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:04:29,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:29,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:04:29,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 3406 proven. 5088 refuted. 0 times theorem prover too weak. 21958 trivial. 0 not checked. [2024-11-22 23:04:30,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92447549] [2024-11-22 23:04:30,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92447549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:30,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179282569] [2024-11-22 23:04:30,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:04:30,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:30,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:30,127 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:30,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 23:04:30,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:04:30,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:30,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 1708 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 23:04:30,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 3844 proven. 5527 refuted. 0 times theorem prover too weak. 21081 trivial. 0 not checked. [2024-11-22 23:04:30,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:04:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 30452 backedges. 3844 proven. 5699 refuted. 0 times theorem prover too weak. 20909 trivial. 0 not checked. [2024-11-22 23:04:33,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179282569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:04:33,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:04:33,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-11-22 23:04:33,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642307602] [2024-11-22 23:04:33,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:04:33,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 23:04:33,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:04:33,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 23:04:33,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 23:04:33,960 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 29 states have call successors, (33), 1 states have call predecessors, (33), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) [2024-11-22 23:04:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:04:34,398 INFO L93 Difference]: Finished difference Result 399 states and 538 transitions. [2024-11-22 23:04:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 23:04:34,399 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 29 states have call successors, (33), 1 states have call predecessors, (33), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) Word has length 914 [2024-11-22 23:04:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:04:34,401 INFO L225 Difference]: With dead ends: 399 [2024-11-22 23:04:34,401 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 23:04:34,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1877 GetRequests, 1807 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2024-11-22 23:04:34,403 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 189 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:04:34,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 273 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:04:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 23:04:34,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 166. [2024-11-22 23:04:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 133 states have (on average 1.0225563909774436) internal successors, (136), 132 states have internal predecessors, (136), 22 states have call successors, (22), 16 states have call predecessors, (22), 10 states have return successors, (56), 17 states have call predecessors, (56), 21 states have call successors, (56) [2024-11-22 23:04:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2024-11-22 23:04:34,414 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 914 [2024-11-22 23:04:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:04:34,414 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2024-11-22 23:04:34,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.472222222222222) internal successors, (197), 36 states have internal predecessors, (197), 29 states have call successors, (33), 1 states have call predecessors, (33), 15 states have return successors, (44), 17 states have call predecessors, (44), 29 states have call successors, (44) [2024-11-22 23:04:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2024-11-22 23:04:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2024-11-22 23:04:34,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:04:34,419 INFO L215 NwaCegarLoop]: trace histogram [110, 108, 89, 55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 54, 54, 53, 34, 21, 1, 1, 1, 1] [2024-11-22 23:04:34,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 23:04:34,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:34,624 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:04:34,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:04:34,624 INFO L85 PathProgramCache]: Analyzing trace with hash 219479183, now seen corresponding path program 15 times [2024-11-22 23:04:34,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:04:34,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737717602] [2024-11-22 23:04:34,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:04:34,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:04:34,735 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2024-11-22 23:04:34,735 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 7255 proven. 10190 refuted. 0 times theorem prover too weak. 24489 trivial. 0 not checked. [2024-11-22 23:04:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:04:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737717602] [2024-11-22 23:04:46,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737717602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:04:46,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869229275] [2024-11-22 23:04:46,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:04:46,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:04:46,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:04:46,595 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:04:46,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 23:04:47,143 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2024-11-22 23:04:47,144 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:04:47,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-22 23:04:47,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:04:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 41934 backedges. 6686 proven. 7855 refuted. 0 times theorem prover too weak. 27393 trivial. 0 not checked. [2024-11-22 23:04:47,884 INFO L311 TraceCheckSpWp]: Computing backward predicates...