./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_7-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:05:30,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:05:30,904 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:05:30,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:05:30,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:05:30,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:05:30,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:05:30,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:05:30,936 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:05:30,936 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:05:30,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:05:30,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:05:30,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:05:30,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:05:30,940 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:05:30,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:05:30,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:05:30,941 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:05:30,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:05:30,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:05:30,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:05:30,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:05:30,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:05:30,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:05:30,945 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:05:30,945 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:05:30,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:05:30,945 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:05:30,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:05:30,946 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:05:30,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:05:30,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:05:30,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:05:30,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:05:30,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:05:30,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:05:30,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:05:30,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:05:30,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:05:30,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:05:30,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:05:30,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:05:30,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:05:30,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:05:30,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2024-11-22 23:05:31,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:05:31,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:05:31,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:05:31,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:05:31,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:05:31,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-11-22 23:05:32,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:05:32,608 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:05:32,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-11-22 23:05:32,614 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a2168ab/46f04d24d12e45cd94d3fbae18204e04/FLAG8206e2558 [2024-11-22 23:05:32,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4a2168ab/46f04d24d12e45cd94d3fbae18204e04 [2024-11-22 23:05:32,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:05:32,626 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:05:32,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:05:32,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:05:32,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:05:32,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0374d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32, skipping insertion in model container [2024-11-22 23:05:32,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,656 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:05:32,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:05:32,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:05:32,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:05:32,945 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:05:32,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32 WrapperNode [2024-11-22 23:05:32,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:05:32,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:05:32,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:05:32,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:05:32,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,968 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-22 23:05:32,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:05:32,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:05:32,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:05:32,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:05:32,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,986 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 23:05:32,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,990 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:05:32,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:05:32,993 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:05:32,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:05:32,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (1/1) ... [2024-11-22 23:05:32,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:05:33,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:33,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 23:05:33,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 23:05:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:05:33,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:05:33,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:05:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:05:33,061 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-22 23:05:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-22 23:05:33,122 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:05:33,124 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:05:33,226 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-22 23:05:33,226 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:05:33,235 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:05:33,235 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 23:05:33,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:33 BoogieIcfgContainer [2024-11-22 23:05:33,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:05:33,237 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:05:33,237 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:05:33,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:05:33,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:05:32" (1/3) ... [2024-11-22 23:05:33,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e8efbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:05:33, skipping insertion in model container [2024-11-22 23:05:33,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:32" (2/3) ... [2024-11-22 23:05:33,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e8efbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:05:33, skipping insertion in model container [2024-11-22 23:05:33,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:33" (3/3) ... [2024-11-22 23:05:33,242 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2024-11-22 23:05:33,253 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:05:33,254 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-22 23:05:33,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:05:33,297 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;@4fc03593, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:05:33,297 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 23:05:33,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 23:05:33,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:05:33,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:33,306 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:33,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:33,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1842216079, now seen corresponding path program 1 times [2024-11-22 23:05:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:33,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135297122] [2024-11-22 23:05:33,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:33,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:33,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135297122] [2024-11-22 23:05:33,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135297122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:33,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:33,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:05:33,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942274516] [2024-11-22 23:05:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:33,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:05:33,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:33,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:05:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:05:33,484 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:33,523 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2024-11-22 23:05:33,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:05:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 23:05:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:33,530 INFO L225 Difference]: With dead ends: 38 [2024-11-22 23:05:33,530 INFO L226 Difference]: Without dead ends: 24 [2024-11-22 23:05:33,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:05:33,535 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:33,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-22 23:05:33,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-22 23:05:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-22 23:05:33,564 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-22 23:05:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:33,565 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-22 23:05:33,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-22 23:05:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:05:33,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:33,566 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:33,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:05:33,566 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:33,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1274123662, now seen corresponding path program 1 times [2024-11-22 23:05:33,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838635427] [2024-11-22 23:05:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:33,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:33,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838635427] [2024-11-22 23:05:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838635427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:33,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:33,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:33,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146669348] [2024-11-22 23:05:33,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:33,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:33,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:33,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:33,622 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:33,675 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-22 23:05:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-22 23:05:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:33,676 INFO L225 Difference]: With dead ends: 24 [2024-11-22 23:05:33,677 INFO L226 Difference]: Without dead ends: 22 [2024-11-22 23:05:33,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:05:33,678 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:33,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-22 23:05:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-22 23:05:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-22 23:05:33,683 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-22 23:05:33,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:33,683 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-22 23:05:33,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-22 23:05:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 23:05:33,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:33,684 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:33,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:05:33,684 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:33,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 572400255, now seen corresponding path program 1 times [2024-11-22 23:05:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739787415] [2024-11-22 23:05:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 23:05:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739787415] [2024-11-22 23:05:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739787415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231364496] [2024-11-22 23:05:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:33,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:33,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:33,819 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:33,851 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-22 23:05:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-22 23:05:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:33,854 INFO L225 Difference]: With dead ends: 34 [2024-11-22 23:05:33,854 INFO L226 Difference]: Without dead ends: 32 [2024-11-22 23:05:33,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:33,855 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:33,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-22 23:05:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-22 23:05:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-22 23:05:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-22 23:05:33,864 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2024-11-22 23:05:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:33,864 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-22 23:05:33,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-22 23:05:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:05:33,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:33,866 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:33,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:05:33,866 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:33,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:33,867 INFO L85 PathProgramCache]: Analyzing trace with hash 576376328, now seen corresponding path program 1 times [2024-11-22 23:05:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:33,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095404150] [2024-11-22 23:05:33,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:33,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:05:33,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095404150] [2024-11-22 23:05:33,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095404150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:33,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720957076] [2024-11-22 23:05:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:33,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:33,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:33,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:33,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:05:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:34,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 23:05:34,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:34,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:05:34,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720957076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:34,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:34,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-22 23:05:34,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27626346] [2024-11-22 23:05:34,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:34,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:05:34,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:34,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:05:34,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:34,256 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:34,546 INFO L93 Difference]: Finished difference Result 126 states and 180 transitions. [2024-11-22 23:05:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 23:05:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24 [2024-11-22 23:05:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:34,550 INFO L225 Difference]: With dead ends: 126 [2024-11-22 23:05:34,550 INFO L226 Difference]: Without dead ends: 93 [2024-11-22 23:05:34,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-22 23:05:34,554 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 113 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:34,554 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 199 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-22 23:05:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2024-11-22 23:05:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.1129032258064515) internal successors, (69), 64 states have internal predecessors, (69), 11 states have call successors, (11), 3 states have call predecessors, (11), 6 states have return successors, (32), 13 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-22 23:05:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 112 transitions. [2024-11-22 23:05:34,571 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 112 transitions. Word has length 24 [2024-11-22 23:05:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:34,572 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 112 transitions. [2024-11-22 23:05:34,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 112 transitions. [2024-11-22 23:05:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:05:34,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:34,573 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:34,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 23:05:34,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:34,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:34,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1418214692, now seen corresponding path program 2 times [2024-11-22 23:05:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895977427] [2024-11-22 23:05:34,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:34,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:34,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:05:34,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895977427] [2024-11-22 23:05:34,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895977427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:34,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421143864] [2024-11-22 23:05:34,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:34,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:34,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:34,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:34,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:05:34,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:34,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:34,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 23:05:34,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:05:34,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421143864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-22 23:05:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730123908] [2024-11-22 23:05:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:34,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:05:34,985 INFO L87 Difference]: Start difference. First operand 81 states and 112 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:35,010 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2024-11-22 23:05:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-22 23:05:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:35,012 INFO L225 Difference]: With dead ends: 101 [2024-11-22 23:05:35,012 INFO L226 Difference]: Without dead ends: 100 [2024-11-22 23:05:35,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:05:35,013 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:35,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-22 23:05:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 87. [2024-11-22 23:05:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 3 states have call predecessors, (11), 7 states have return successors, (39), 15 states have call predecessors, (39), 10 states have call successors, (39) [2024-11-22 23:05:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2024-11-22 23:05:35,046 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 30 [2024-11-22 23:05:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:35,046 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2024-11-22 23:05:35,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2024-11-22 23:05:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-22 23:05:35,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:35,047 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:35,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:35,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:35,268 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:35,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1014982419, now seen corresponding path program 1 times [2024-11-22 23:05:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762625045] [2024-11-22 23:05:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 23:05:35,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:35,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762625045] [2024-11-22 23:05:35,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762625045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:35,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974459723] [2024-11-22 23:05:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:35,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:35,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:35,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:35,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:05:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:35,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:35,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:35,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:05:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974459723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:35,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-22 23:05:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395911319] [2024-11-22 23:05:35,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:35,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 23:05:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:35,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 23:05:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:05:35,754 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:36,280 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2024-11-22 23:05:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 23:05:36,281 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 31 [2024-11-22 23:05:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:36,282 INFO L225 Difference]: With dead ends: 287 [2024-11-22 23:05:36,282 INFO L226 Difference]: Without dead ends: 209 [2024-11-22 23:05:36,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2024-11-22 23:05:36,289 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 144 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:36,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 296 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-22 23:05:36,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 175. [2024-11-22 23:05:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 137 states have (on average 1.094890510948905) internal successors, (150), 137 states have internal predecessors, (150), 22 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (83), 31 states have call predecessors, (83), 21 states have call successors, (83) [2024-11-22 23:05:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 255 transitions. [2024-11-22 23:05:36,326 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 255 transitions. Word has length 31 [2024-11-22 23:05:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:36,327 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 255 transitions. [2024-11-22 23:05:36,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 15 states have internal predecessors, (57), 9 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 255 transitions. [2024-11-22 23:05:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 23:05:36,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:36,328 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:36,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 23:05:36,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:36,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:36,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash -54807044, now seen corresponding path program 1 times [2024-11-22 23:05:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:36,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623394006] [2024-11-22 23:05:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-22 23:05:36,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:36,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623394006] [2024-11-22 23:05:36,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623394006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:36,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:36,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:36,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454229100] [2024-11-22 23:05:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:36,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:36,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:36,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:36,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:36,626 INFO L87 Difference]: Start difference. First operand 175 states and 255 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:36,662 INFO L93 Difference]: Finished difference Result 189 states and 277 transitions. [2024-11-22 23:05:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-22 23:05:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:36,665 INFO L225 Difference]: With dead ends: 189 [2024-11-22 23:05:36,667 INFO L226 Difference]: Without dead ends: 188 [2024-11-22 23:05:36,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:36,668 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:36,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:36,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-22 23:05:36,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2024-11-22 23:05:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.0909090909090908) internal successors, (156), 142 states have internal predecessors, (156), 23 states have call successors, (23), 6 states have call predecessors, (23), 14 states have return successors, (89), 33 states have call predecessors, (89), 22 states have call successors, (89) [2024-11-22 23:05:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 268 transitions. [2024-11-22 23:05:36,696 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 268 transitions. Word has length 50 [2024-11-22 23:05:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:36,697 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 268 transitions. [2024-11-22 23:05:36,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:36,698 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 268 transitions. [2024-11-22 23:05:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-22 23:05:36,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:36,702 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 7, 7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:36,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 23:05:36,703 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:36,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1152688629, now seen corresponding path program 1 times [2024-11-22 23:05:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378772586] [2024-11-22 23:05:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-22 23:05:36,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378772586] [2024-11-22 23:05:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378772586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:36,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707797808] [2024-11-22 23:05:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:36,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:36,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:36,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:36,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:05:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:36,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:05:36,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 122 proven. 75 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-22 23:05:36,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 35 proven. 182 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 23:05:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707797808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:37,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2024-11-22 23:05:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094518718] [2024-11-22 23:05:37,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:37,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 23:05:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 23:05:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:05:37,143 INFO L87 Difference]: Start difference. First operand 182 states and 268 transitions. Second operand has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 14 states have internal predecessors, (71), 9 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:05:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:37,555 INFO L93 Difference]: Finished difference Result 453 states and 696 transitions. [2024-11-22 23:05:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 23:05:37,556 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 14 states have internal predecessors, (71), 9 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 83 [2024-11-22 23:05:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:37,558 INFO L225 Difference]: With dead ends: 453 [2024-11-22 23:05:37,558 INFO L226 Difference]: Without dead ends: 286 [2024-11-22 23:05:37,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 144 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2024-11-22 23:05:37,559 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 153 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:37,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 322 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-22 23:05:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 263. [2024-11-22 23:05:37,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 208 states have (on average 1.0913461538461537) internal successors, (227), 205 states have internal predecessors, (227), 33 states have call successors, (33), 9 states have call predecessors, (33), 20 states have return successors, (123), 48 states have call predecessors, (123), 32 states have call successors, (123) [2024-11-22 23:05:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 383 transitions. [2024-11-22 23:05:37,578 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 383 transitions. Word has length 83 [2024-11-22 23:05:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:37,578 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 383 transitions. [2024-11-22 23:05:37,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 14 states have internal predecessors, (71), 9 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:05:37,578 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 383 transitions. [2024-11-22 23:05:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-22 23:05:37,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:37,580 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:37,589 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 23:05:37,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:37,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:37,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1147856764, now seen corresponding path program 1 times [2024-11-22 23:05:37,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:37,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616132742] [2024-11-22 23:05:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-22 23:05:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616132742] [2024-11-22 23:05:37,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616132742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:37,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354774894] [2024-11-22 23:05:37,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:37,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:37,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:37,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:05:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:37,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 23:05:37,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 136 proven. 106 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:05:38,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 136 proven. 106 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:05:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354774894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:38,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:38,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 19, 19] total 26 [2024-11-22 23:05:38,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951142413] [2024-11-22 23:05:38,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:38,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 23:05:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:38,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 23:05:38,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2024-11-22 23:05:38,270 INFO L87 Difference]: Start difference. First operand 263 states and 383 transitions. Second operand has 26 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 23:05:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:38,801 INFO L93 Difference]: Finished difference Result 504 states and 766 transitions. [2024-11-22 23:05:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 23:05:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 81 [2024-11-22 23:05:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:38,804 INFO L225 Difference]: With dead ends: 504 [2024-11-22 23:05:38,804 INFO L226 Difference]: Without dead ends: 258 [2024-11-22 23:05:38,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=580, Invalid=1676, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 23:05:38,809 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 352 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:38,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 155 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-22 23:05:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 243. [2024-11-22 23:05:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 192 states have (on average 1.0885416666666667) internal successors, (209), 191 states have internal predecessors, (209), 30 states have call successors, (30), 10 states have call predecessors, (30), 19 states have return successors, (58), 41 states have call predecessors, (58), 29 states have call successors, (58) [2024-11-22 23:05:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 297 transitions. [2024-11-22 23:05:38,827 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 297 transitions. Word has length 81 [2024-11-22 23:05:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:38,827 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 297 transitions. [2024-11-22 23:05:38,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 18 states have internal predecessors, (89), 13 states have call successors, (19), 9 states have call predecessors, (19), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 23:05:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 297 transitions. [2024-11-22 23:05:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 23:05:38,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:38,828 INFO L215 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:38,840 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 23:05:39,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:39,029 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:39,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash -478574661, now seen corresponding path program 2 times [2024-11-22 23:05:39,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:39,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231920188] [2024-11-22 23:05:39,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:39,042 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:39,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 30 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-22 23:05:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:39,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231920188] [2024-11-22 23:05:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231920188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:39,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220722517] [2024-11-22 23:05:39,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:39,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:39,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:39,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:05:39,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:39,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:39,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 23:05:39,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 37 proven. 116 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:05:39,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 9 proven. 139 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 23:05:39,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220722517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:39,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:39,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16, 17] total 20 [2024-11-22 23:05:39,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71293968] [2024-11-22 23:05:39,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:39,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:05:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:05:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:05:39,523 INFO L87 Difference]: Start difference. First operand 243 states and 297 transitions. Second operand has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 15 states have internal predecessors, (72), 12 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-22 23:05:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:39,765 INFO L93 Difference]: Finished difference Result 377 states and 470 transitions. [2024-11-22 23:05:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 23:05:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 15 states have internal predecessors, (72), 12 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2024-11-22 23:05:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:39,767 INFO L225 Difference]: With dead ends: 377 [2024-11-22 23:05:39,767 INFO L226 Difference]: Without dead ends: 152 [2024-11-22 23:05:39,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 13 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2024-11-22 23:05:39,769 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 154 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:39,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 273 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-22 23:05:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2024-11-22 23:05:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 116 states have internal predecessors, (128), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-22 23:05:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 165 transitions. [2024-11-22 23:05:39,783 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 165 transitions. Word has length 68 [2024-11-22 23:05:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:39,783 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 165 transitions. [2024-11-22 23:05:39,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 15 states have internal predecessors, (72), 12 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (8), 2 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-22 23:05:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 165 transitions. [2024-11-22 23:05:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 23:05:39,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:39,784 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:39,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 23:05:39,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:39,987 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:39,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash -496981020, now seen corresponding path program 3 times [2024-11-22 23:05:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178568833] [2024-11-22 23:05:39,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:05:39,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:39,997 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 23:05:39,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-22 23:05:40,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:40,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178568833] [2024-11-22 23:05:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178568833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447748279] [2024-11-22 23:05:40,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:05:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:40,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:40,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:05:40,148 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 23:05:40,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:40,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 23:05:40,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-22 23:05:40,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-22 23:05:40,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447748279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:40,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:40,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-22 23:05:40,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896323431] [2024-11-22 23:05:40,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:40,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 23:05:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 23:05:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:05:40,305 INFO L87 Difference]: Start difference. First operand 145 states and 165 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:05:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:40,366 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2024-11-22 23:05:40,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 23:05:40,366 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 69 [2024-11-22 23:05:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:40,367 INFO L225 Difference]: With dead ends: 146 [2024-11-22 23:05:40,367 INFO L226 Difference]: Without dead ends: 145 [2024-11-22 23:05:40,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:05:40,368 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:40,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 173 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-22 23:05:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-22 23:05:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 114 states have (on average 1.087719298245614) internal successors, (124), 116 states have internal predecessors, (124), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-22 23:05:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2024-11-22 23:05:40,373 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 69 [2024-11-22 23:05:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:40,374 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2024-11-22 23:05:40,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-22 23:05:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2024-11-22 23:05:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 23:05:40,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:40,374 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 8, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-22 23:05:40,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 23:05:40,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:40,579 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:40,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -619858036, now seen corresponding path program 2 times [2024-11-22 23:05:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:40,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434441911] [2024-11-22 23:05:40,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:40,589 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:40,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 14 proven. 64 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-22 23:05:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434441911] [2024-11-22 23:05:40,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434441911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:40,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112898655] [2024-11-22 23:05:40,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:40,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:40,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:40,849 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:40,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:05:40,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:40,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:40,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:40,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 25 proven. 54 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-22 23:05:40,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-22 23:05:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112898655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:41,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:41,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2024-11-22 23:05:41,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228407223] [2024-11-22 23:05:41,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:41,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 23:05:41,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:41,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 23:05:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:05:41,331 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-22 23:05:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:41,459 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2024-11-22 23:05:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:05:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) Word has length 101 [2024-11-22 23:05:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:41,462 INFO L225 Difference]: With dead ends: 145 [2024-11-22 23:05:41,462 INFO L226 Difference]: Without dead ends: 144 [2024-11-22 23:05:41,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2024-11-22 23:05:41,463 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:41,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 177 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-22 23:05:41,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-22 23:05:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 115 states have internal predecessors, (118), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-22 23:05:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2024-11-22 23:05:41,469 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 101 [2024-11-22 23:05:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:41,469 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2024-11-22 23:05:41,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 6 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (16), 13 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-22 23:05:41,470 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2024-11-22 23:05:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 23:05:41,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:41,470 INFO L215 NwaCegarLoop]: trace histogram [17, 14, 14, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2024-11-22 23:05:41,481 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 23:05:41,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 23:05:41,675 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:41,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1131194063, now seen corresponding path program 4 times [2024-11-22 23:05:41,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:41,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171498039] [2024-11-22 23:05:41,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:05:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:41,693 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:05:41,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-11-22 23:05:42,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:42,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171498039] [2024-11-22 23:05:42,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171498039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014461101] [2024-11-22 23:05:42,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:05:42,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:42,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:42,082 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 23:05:42,083 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 23:05:42,138 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:05:42,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:42,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:05:42,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2024-11-22 23:05:42,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-11-22 23:05:43,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014461101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:43,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2024-11-22 23:05:43,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252147825] [2024-11-22 23:05:43,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:43,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 23:05:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 23:05:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-22 23:05:43,261 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-22 23:05:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:43,320 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2024-11-22 23:05:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 23:05:43,321 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 155 [2024-11-22 23:05:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:43,322 INFO L225 Difference]: With dead ends: 145 [2024-11-22 23:05:43,322 INFO L226 Difference]: Without dead ends: 144 [2024-11-22 23:05:43,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 296 SyntacticMatches, 16 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2024-11-22 23:05:43,323 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:43,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-22 23:05:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-22 23:05:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 114 states have (on average 1.0087719298245614) internal successors, (115), 115 states have internal predecessors, (115), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-22 23:05:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2024-11-22 23:05:43,328 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 155 [2024-11-22 23:05:43,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:43,329 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2024-11-22 23:05:43,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-22 23:05:43,329 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2024-11-22 23:05:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-22 23:05:43,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:43,332 INFO L215 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2024-11-22 23:05:43,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 23:05:43,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 23:05:43,536 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-22 23:05:43,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:43,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2050570235, now seen corresponding path program 5 times [2024-11-22 23:05:43,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:43,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745039835] [2024-11-22 23:05:43,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:05:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:43,595 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-22 23:05:43,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 936 proven. 1467 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2024-11-22 23:05:45,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745039835] [2024-11-22 23:05:45,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745039835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:45,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468205792] [2024-11-22 23:05:45,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:05:45,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:45,798 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 23:05:45,800 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 23:05:45,920 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-22 23:05:45,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:45,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-22 23:05:45,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2024-11-22 23:05:46,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:51,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2024-11-22 23:05:51,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468205792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:51,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:51,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2024-11-22 23:05:51,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015124925] [2024-11-22 23:05:51,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:51,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-22 23:05:51,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-22 23:05:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 23:05:51,826 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-22 23:05:51,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:51,891 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2024-11-22 23:05:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 23:05:51,891 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 398 [2024-11-22 23:05:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:51,892 INFO L225 Difference]: With dead ends: 144 [2024-11-22 23:05:51,892 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 23:05:51,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 774 SyntacticMatches, 55 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2558 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=556, Invalid=1796, Unknown=0, NotChecked=0, Total=2352 [2024-11-22 23:05:51,893 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:51,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 141 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 23:05:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 23:05:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 23:05:51,895 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 398 [2024-11-22 23:05:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:51,895 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 23:05:51,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-22 23:05:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 23:05:51,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 23:05:51,898 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-22 23:05:51,898 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-22 23:05:51,898 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-22 23:05:51,898 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-22 23:05:51,898 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-22 23:05:51,898 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-22 23:05:51,909 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 23:05:52,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 23:05:52,106 INFO L407 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1] [2024-11-22 23:05:52,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 23:05:52,772 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 23:05:52,793 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 23:05:52,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:05:52 BoogieIcfgContainer [2024-11-22 23:05:52,797 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 23:05:52,797 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 23:05:52,797 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 23:05:52,797 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 23:05:52,798 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:33" (3/4) ... [2024-11-22 23:05:52,799 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 23:05:52,802 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-11-22 23:05:52,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 23:05:52,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 23:05:52,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 23:05:52,805 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 23:05:52,862 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 23:05:52,863 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 23:05:52,863 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 23:05:52,863 INFO L158 Benchmark]: Toolchain (without parser) took 20237.29ms. Allocated memory was 146.8MB in the beginning and 557.8MB in the end (delta: 411.0MB). Free memory was 78.4MB in the beginning and 441.6MB in the end (delta: -363.2MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,864 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 146.8MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:52,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.08ms. Allocated memory is still 146.8MB. Free memory was 78.2MB in the beginning and 114.8MB in the end (delta: -36.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.85ms. Allocated memory is still 146.8MB. Free memory was 114.8MB in the beginning and 113.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,864 INFO L158 Benchmark]: Boogie Preprocessor took 23.06ms. Allocated memory is still 146.8MB. Free memory was 113.4MB in the beginning and 112.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:52,864 INFO L158 Benchmark]: RCFGBuilder took 243.44ms. Allocated memory is still 146.8MB. Free memory was 112.0MB in the beginning and 101.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,865 INFO L158 Benchmark]: TraceAbstraction took 19559.67ms. Allocated memory was 146.8MB in the beginning and 557.8MB in the end (delta: 411.0MB). Free memory was 100.8MB in the beginning and 446.9MB in the end (delta: -346.1MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,865 INFO L158 Benchmark]: Witness Printer took 65.82ms. Allocated memory is still 557.8MB. Free memory was 446.9MB in the beginning and 441.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,866 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 146.8MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.08ms. Allocated memory is still 146.8MB. Free memory was 78.2MB in the beginning and 114.8MB in the end (delta: -36.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.85ms. Allocated memory is still 146.8MB. Free memory was 114.8MB in the beginning and 113.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.06ms. Allocated memory is still 146.8MB. Free memory was 113.4MB in the beginning and 112.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.44ms. Allocated memory is still 146.8MB. Free memory was 112.0MB in the beginning and 101.5MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19559.67ms. Allocated memory was 146.8MB in the beginning and 557.8MB in the end (delta: 411.0MB). Free memory was 100.8MB in the beginning and 446.9MB in the end (delta: -346.1MB). Peak memory consumption was 316.4MB. Max. memory is 16.1GB. * Witness Printer took 65.82ms. Allocated memory is still 557.8MB. Free memory was 446.9MB in the beginning and 441.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 18.8s, OverallIterations: 14, TraceHistogramMax: 41, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1007 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 979 mSDsluCounter, 2145 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1769 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3072 IncrementalHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 376 mSDtfsCounter, 3072 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2304 GetRequests, 1913 SyntacticMatches, 117 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4316 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=8, InterpolantAutomatonStates: 181, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 117 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 2168 NumberOfCodeBlocks, 2096 NumberOfCodeBlocksAsserted, 92 NumberOfCheckSat, 3145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7176 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2046 ConjunctsInSsa, 197 ConjunctsInUnsatCore, 33 InterpolantComputations, 5 PerfectInterpolantSequences, 18017/23012 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Requires: (n <= 7) Ensures: (((((\result == 0) && (n <= 0)) || (1 < n)) || ((\result == 1) && (1 == n))) && (n <= 7)) RESULT: Ultimate proved your program to be correct! [2024-11-22 23:05:52,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE