./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.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_2calls_6-2.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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:05:08,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:05:08,124 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:05:08,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:05:08,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:05:08,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:05:08,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:05:08,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:05:08,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:05:08,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:05:08,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:05:08,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:05:08,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:05:08,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:05:08,157 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:05:08,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:05:08,158 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:05:08,158 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:05:08,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:05:08,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:05:08,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:05:08,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:05:08,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:05:08,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:05:08,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:05:08,161 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:05:08,161 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:05:08,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:05:08,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:05:08,162 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:05:08,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:05:08,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:05:08,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:05:08,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:05:08,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:05:08,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:05:08,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:05:08,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:05:08,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:05:08,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:05:08,165 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:05:08,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:05:08,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:05:08,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:05:08,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2024-11-22 23:05:08,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:05:08,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:05:08,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:05:08,378 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:05:08,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:05:08,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2024-11-22 23:05:09,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:05:09,783 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:05:09,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2024-11-22 23:05:09,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad7b404a/5f2176181b004a469c78d1076d1e5e05/FLAG6dc411ea9 [2024-11-22 23:05:10,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad7b404a/5f2176181b004a469c78d1076d1e5e05 [2024-11-22 23:05:10,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:05:10,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:05:10,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:05:10,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:05:10,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:05:10,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34433ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10, skipping insertion in model container [2024-11-22 23:05:10,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,234 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:05:10,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:05:10,380 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:05:10,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:05:10,407 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:05:10,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10 WrapperNode [2024-11-22 23:05:10,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:05:10,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:05:10,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:05:10,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:05:10,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,433 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-22 23:05:10,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:05:10,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:05:10,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:05:10,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:05:10,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,460 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 23:05:10,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,466 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:05:10,472 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:05:10,472 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:05:10,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:05:10,473 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (1/1) ... [2024-11-22 23:05:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:05:10,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:10,506 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 23:05:10,509 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 23:05:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:05:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:05:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 23:05:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 23:05:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 23:05:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 23:05:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:05:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:05:10,620 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:05:10,623 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:05:10,749 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-22 23:05:10,749 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:05:10,759 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:05:10,759 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 23:05:10,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:10 BoogieIcfgContainer [2024-11-22 23:05:10,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:05:10,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:05:10,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:05:10,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:05:10,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:05:10" (1/3) ... [2024-11-22 23:05:10,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1dab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:05:10, skipping insertion in model container [2024-11-22 23:05:10,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:05:10" (2/3) ... [2024-11-22 23:05:10,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1dab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:05:10, skipping insertion in model container [2024-11-22 23:05:10,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:10" (3/3) ... [2024-11-22 23:05:10,768 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2024-11-22 23:05:10,781 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:05:10,781 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-22 23:05:10,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:05:10,831 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;@73245217, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:05:10,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-22 23:05:10,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 23:05:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 23:05:10,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:10,840 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:10,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:10,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:10,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2024-11-22 23:05:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:10,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804958588] [2024-11-22 23:05:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:10,997 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 23:05:10,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:10,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804958588] [2024-11-22 23:05:10,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804958588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:10,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:10,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:05:11,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055770232] [2024-11-22 23:05:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:11,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:05:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:05:11,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:05:11,029 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 23:05:11,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:11,079 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-22 23:05:11,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:05:11,082 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 23:05:11,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:11,087 INFO L225 Difference]: With dead ends: 59 [2024-11-22 23:05:11,087 INFO L226 Difference]: Without dead ends: 45 [2024-11-22 23:05:11,090 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 23:05:11,092 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 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 23:05:11,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-22 23:05:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-22 23:05:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 23:05:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-22 23:05:11,121 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2024-11-22 23:05:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:11,121 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-22 23:05:11,121 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 23:05:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-22 23:05:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 23:05:11,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:11,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:11,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:05:11,123 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:11,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2024-11-22 23:05:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413655941] [2024-11-22 23:05:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:11,207 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 23:05:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413655941] [2024-11-22 23:05:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413655941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899976892] [2024-11-22 23:05:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:11,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:11,210 INFO L87 Difference]: Start difference. First operand 43 states and 49 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 23:05:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:11,269 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-22 23:05:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:11,269 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 23:05:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:11,270 INFO L225 Difference]: With dead ends: 64 [2024-11-22 23:05:11,270 INFO L226 Difference]: Without dead ends: 58 [2024-11-22 23:05:11,270 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 23:05:11,271 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:11,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-22 23:05:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-22 23:05:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:05:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-22 23:05:11,278 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2024-11-22 23:05:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:11,279 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-22 23:05:11,279 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 23:05:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-22 23:05:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-22 23:05:11,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:11,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:11,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:05:11,280 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:11,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2024-11-22 23:05:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277518178] [2024-11-22 23:05:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:11,311 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 23:05:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:11,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277518178] [2024-11-22 23:05:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277518178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:11,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 23:05:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538009812] [2024-11-22 23:05:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:11,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 23:05:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 23:05:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 23:05:11,314 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:11,335 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-11-22 23:05:11,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 23:05:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-22 23:05:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:11,337 INFO L225 Difference]: With dead ends: 58 [2024-11-22 23:05:11,338 INFO L226 Difference]: Without dead ends: 56 [2024-11-22 23:05:11,339 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 23:05:11,340 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 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 23:05:11,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-22 23:05:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-22 23:05:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:05:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-22 23:05:11,348 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2024-11-22 23:05:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:11,348 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-22 23:05:11,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-22 23:05:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 23:05:11,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:11,349 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:11,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:05:11,349 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:11,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2024-11-22 23:05:11,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:11,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325635766] [2024-11-22 23:05:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:11,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:11,485 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 23:05:11,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:11,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325635766] [2024-11-22 23:05:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325635766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:05:11,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420946608] [2024-11-22 23:05:11,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:11,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:05:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:05:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:05:11,488 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:11,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:11,587 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-11-22 23:05:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:05:11,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 23:05:11,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:11,588 INFO L225 Difference]: With dead ends: 58 [2024-11-22 23:05:11,588 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 23:05:11,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:05:11,590 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:11,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 23:05:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-22 23:05:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 23:05:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-22 23:05:11,597 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2024-11-22 23:05:11,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:11,598 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-22 23:05:11,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:05:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-22 23:05:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 23:05:11,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:11,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:11,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 23:05:11,599 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:11,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2024-11-22 23:05:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548017296] [2024-11-22 23:05:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:11,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:05:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:11,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548017296] [2024-11-22 23:05:11,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548017296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:11,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:11,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:11,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738964768] [2024-11-22 23:05:11,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:11,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:11,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:11,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:11,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:11,758 INFO L87 Difference]: Start difference. First operand 50 states and 59 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 23:05:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:11,796 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-22 23:05:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:11,797 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 23 [2024-11-22 23:05:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:11,800 INFO L225 Difference]: With dead ends: 74 [2024-11-22 23:05:11,800 INFO L226 Difference]: Without dead ends: 69 [2024-11-22 23:05:11,800 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 23:05:11,802 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:11,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-22 23:05:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-22 23:05:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-22 23:05:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-22 23:05:11,819 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2024-11-22 23:05:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:11,821 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-22 23:05:11,821 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 23:05:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-22 23:05:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 23:05:11,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:11,822 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:11,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 23:05:11,823 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:11,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2024-11-22 23:05:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:11,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711991889] [2024-11-22 23:05:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:11,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 23:05:11,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711991889] [2024-11-22 23:05:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711991889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50957899] [2024-11-22 23:05:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:11,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:11,920 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 23:05:11,921 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 23:05:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:11,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 23:05:11,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:12,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:12,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50957899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:12,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:12,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-22 23:05:12,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059359481] [2024-11-22 23:05:12,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:12,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:05:12,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:12,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:05:12,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 23:05:12,038 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:12,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:12,139 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-11-22 23:05:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:05:12,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-22 23:05:12,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:12,141 INFO L225 Difference]: With dead ends: 113 [2024-11-22 23:05:12,142 INFO L226 Difference]: Without dead ends: 63 [2024-11-22 23:05:12,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:05:12,144 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:12,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:12,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-22 23:05:12,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-22 23:05:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-22 23:05:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-22 23:05:12,155 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2024-11-22 23:05:12,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:12,156 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-22 23:05:12,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:12,156 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-22 23:05:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 23:05:12,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:12,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:12,164 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 23:05:12,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 23:05:12,357 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:12,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:12,358 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2024-11-22 23:05:12,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:12,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397575308] [2024-11-22 23:05:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 23:05:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:12,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397575308] [2024-11-22 23:05:12,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397575308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:12,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:12,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380325213] [2024-11-22 23:05:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:12,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:12,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:12,445 INFO L87 Difference]: Start difference. First operand 59 states and 71 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:12,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:12,488 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-22 23:05:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:12,491 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-22 23:05:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:12,492 INFO L225 Difference]: With dead ends: 83 [2024-11-22 23:05:12,492 INFO L226 Difference]: Without dead ends: 78 [2024-11-22 23:05:12,493 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 23:05:12,493 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:12,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-22 23:05:12,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-11-22 23:05:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-22 23:05:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2024-11-22 23:05:12,503 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2024-11-22 23:05:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:12,504 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2024-11-22 23:05:12,504 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), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2024-11-22 23:05:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 23:05:12,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:12,505 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, 1, 1, 1, 1, 1] [2024-11-22 23:05:12,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 23:05:12,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:12,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2024-11-22 23:05:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:12,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447578092] [2024-11-22 23:05:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:12,552 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 23:05:12,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:12,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447578092] [2024-11-22 23:05:12,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447578092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:12,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157936846] [2024-11-22 23:05:12,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:12,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:12,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:12,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:12,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:12,554 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:12,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:12,596 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-22 23:05:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:12,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-22 23:05:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:12,597 INFO L225 Difference]: With dead ends: 83 [2024-11-22 23:05:12,597 INFO L226 Difference]: Without dead ends: 81 [2024-11-22 23:05:12,598 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 23:05:12,599 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:12,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:12,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-22 23:05:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-22 23:05:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-22 23:05:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-11-22 23:05:12,615 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2024-11-22 23:05:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:12,615 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-11-22 23:05:12,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-11-22 23:05:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:05:12,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:12,617 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, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:12,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 23:05:12,619 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:12,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2024-11-22 23:05:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181900735] [2024-11-22 23:05:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:12,681 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 23:05:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:12,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181900735] [2024-11-22 23:05:12,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181900735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:12,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779310307] [2024-11-22 23:05:12,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:12,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:12,688 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 23:05:12,690 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 23:05:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:12,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:12,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:12,806 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 23:05:12,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:12,954 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 23:05:12,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779310307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:12,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:12,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-22 23:05:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197724476] [2024-11-22 23:05:12,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:12,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 23:05:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 23:05:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:05:12,957 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:13,277 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2024-11-22 23:05:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 23:05:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2024-11-22 23:05:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:13,279 INFO L225 Difference]: With dead ends: 204 [2024-11-22 23:05:13,279 INFO L226 Difference]: Without dead ends: 135 [2024-11-22 23:05:13,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-22 23:05:13,284 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 130 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:13,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 548 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-22 23:05:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 121. [2024-11-22 23:05:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2024-11-22 23:05:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2024-11-22 23:05:13,296 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2024-11-22 23:05:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:13,296 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2024-11-22 23:05:13,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-22 23:05:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2024-11-22 23:05:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-22 23:05:13,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:13,297 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:13,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 23:05:13,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-22 23:05:13,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:13,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2024-11-22 23:05:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090572747] [2024-11-22 23:05:13,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:13,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:13,512 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:13,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:05:13,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:13,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090572747] [2024-11-22 23:05:13,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090572747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:13,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285522478] [2024-11-22 23:05:13,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:13,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:13,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:13,574 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 23:05:13,575 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 23:05:13,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:13,603 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:13,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 23:05:13,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:05:13,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285522478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:13,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-22 23:05:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774558746] [2024-11-22 23:05:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:13,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:05:13,636 INFO L87 Difference]: Start difference. First operand 121 states and 157 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:13,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:13,658 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2024-11-22 23:05:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:13,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-22 23:05:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:13,660 INFO L225 Difference]: With dead ends: 130 [2024-11-22 23:05:13,660 INFO L226 Difference]: Without dead ends: 129 [2024-11-22 23:05:13,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 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 23:05:13,661 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:13,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-22 23:05:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2024-11-22 23:05:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2024-11-22 23:05:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2024-11-22 23:05:13,670 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2024-11-22 23:05:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:13,670 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2024-11-22 23:05:13,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2024-11-22 23:05:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-22 23:05:13,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:13,671 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:13,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:13,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:13,872 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:13,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2024-11-22 23:05:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:13,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469365304] [2024-11-22 23:05:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:05:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469365304] [2024-11-22 23:05:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469365304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609084947] [2024-11-22 23:05:13,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:13,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:13,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:13,927 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 23:05:13,928 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 23:05:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:13,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:13,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:14,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:05:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609084947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:14,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2024-11-22 23:05:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852491001] [2024-11-22 23:05:14,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:14,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 23:05:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 23:05:14,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:05:14,215 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:05:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:14,573 INFO L93 Difference]: Finished difference Result 299 states and 388 transitions. [2024-11-22 23:05:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 23:05:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-11-22 23:05:14,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:14,575 INFO L225 Difference]: With dead ends: 299 [2024-11-22 23:05:14,575 INFO L226 Difference]: Without dead ends: 189 [2024-11-22 23:05:14,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-11-22 23:05:14,576 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 125 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:14,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 665 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-22 23:05:14,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2024-11-22 23:05:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 132 states have internal predecessors, (150), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 27 states have call predecessors, (48), 21 states have call successors, (48) [2024-11-22 23:05:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2024-11-22 23:05:14,593 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 43 [2024-11-22 23:05:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:14,593 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2024-11-22 23:05:14,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:05:14,594 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2024-11-22 23:05:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-22 23:05:14,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:14,594 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:14,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:14,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:14,795 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:14,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:14,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2086948818, now seen corresponding path program 1 times [2024-11-22 23:05:14,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:14,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406938858] [2024-11-22 23:05:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:14,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 23:05:14,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:14,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406938858] [2024-11-22 23:05:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406938858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372050672] [2024-11-22 23:05:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:14,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:14,855 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 23:05:14,856 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 23:05:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:14,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:05:14,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:05:15,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:05:15,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372050672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:15,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:15,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2024-11-22 23:05:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864539159] [2024-11-22 23:05:15,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:15,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:05:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:05:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:05:15,204 INFO L87 Difference]: Start difference. First operand 168 states and 220 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:05:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:15,589 INFO L93 Difference]: Finished difference Result 356 states and 468 transitions. [2024-11-22 23:05:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 23:05:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 48 [2024-11-22 23:05:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:15,591 INFO L225 Difference]: With dead ends: 356 [2024-11-22 23:05:15,591 INFO L226 Difference]: Without dead ends: 209 [2024-11-22 23:05:15,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-22 23:05:15,592 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 140 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:15,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 849 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:05:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-22 23:05:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2024-11-22 23:05:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 149 states have internal predecessors, (170), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 31 states have call predecessors, (55), 24 states have call successors, (55) [2024-11-22 23:05:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2024-11-22 23:05:15,602 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 48 [2024-11-22 23:05:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:15,602 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2024-11-22 23:05:15,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:05:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2024-11-22 23:05:15,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-22 23:05:15,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:15,603 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:15,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:15,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 23:05:15,805 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:15,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1881704096, now seen corresponding path program 2 times [2024-11-22 23:05:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125642026] [2024-11-22 23:05:15,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:15,812 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:15,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 23:05:15,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:15,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125642026] [2024-11-22 23:05:15,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125642026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:15,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058583893] [2024-11-22 23:05:15,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:15,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:15,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:15,863 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 23:05:15,879 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 23:05:15,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:15,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:15,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 23:05:15,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 23:05:15,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058583893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:15,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:15,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-22 23:05:15,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130027072] [2024-11-22 23:05:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:15,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:05:15,946 INFO L87 Difference]: Start difference. First operand 190 states and 250 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:15,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:15,963 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2024-11-22 23:05:15,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:15,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2024-11-22 23:05:15,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:15,965 INFO L225 Difference]: With dead ends: 203 [2024-11-22 23:05:15,965 INFO L226 Difference]: Without dead ends: 202 [2024-11-22 23:05:15,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 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 23:05:15,966 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:15,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-22 23:05:15,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2024-11-22 23:05:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.1337579617834395) internal successors, (178), 153 states have internal predecessors, (178), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 35 states have call predecessors, (55), 24 states have call successors, (55) [2024-11-22 23:05:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 258 transitions. [2024-11-22 23:05:15,974 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 258 transitions. Word has length 48 [2024-11-22 23:05:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:15,974 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 258 transitions. [2024-11-22 23:05:15,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 258 transitions. [2024-11-22 23:05:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 23:05:15,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:15,975 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:15,982 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 23:05:16,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:16,180 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:16,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1796715069, now seen corresponding path program 1 times [2024-11-22 23:05:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970159494] [2024-11-22 23:05:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:16,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 23:05:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970159494] [2024-11-22 23:05:16,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970159494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493821833] [2024-11-22 23:05:16,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:16,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:16,229 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 23:05:16,231 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 23:05:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:16,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 23:05:16,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-22 23:05:16,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493821833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:16,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:16,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-22 23:05:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353057478] [2024-11-22 23:05:16,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:16,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:05:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:05:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:05:16,296 INFO L87 Difference]: Start difference. First operand 198 states and 258 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:16,324 INFO L93 Difference]: Finished difference Result 214 states and 279 transitions. [2024-11-22 23:05:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:05:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2024-11-22 23:05:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:16,326 INFO L225 Difference]: With dead ends: 214 [2024-11-22 23:05:16,326 INFO L226 Difference]: Without dead ends: 213 [2024-11-22 23:05:16,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:05:16,327 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:16,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 184 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-22 23:05:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 194. [2024-11-22 23:05:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 154 states have (on average 1.1363636363636365) internal successors, (175), 150 states have internal predecessors, (175), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 34 states have call predecessors, (52), 23 states have call successors, (52) [2024-11-22 23:05:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2024-11-22 23:05:16,339 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 49 [2024-11-22 23:05:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:16,339 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2024-11-22 23:05:16,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2024-11-22 23:05:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 23:05:16,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:16,341 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:16,350 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 23:05:16,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:16,542 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:16,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:16,542 INFO L85 PathProgramCache]: Analyzing trace with hash 282184236, now seen corresponding path program 1 times [2024-11-22 23:05:16,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:16,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948953194] [2024-11-22 23:05:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:16,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-22 23:05:16,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:16,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948953194] [2024-11-22 23:05:16,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948953194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:16,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:16,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707386850] [2024-11-22 23:05:16,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:16,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:16,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:16,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:16,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:16,594 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:16,623 INFO L93 Difference]: Finished difference Result 210 states and 272 transitions. [2024-11-22 23:05:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:16,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-22 23:05:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:16,624 INFO L225 Difference]: With dead ends: 210 [2024-11-22 23:05:16,624 INFO L226 Difference]: Without dead ends: 209 [2024-11-22 23:05:16,625 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 23:05:16,625 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:16,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 169 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-22 23:05:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2024-11-22 23:05:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 147 states have internal predecessors, (172), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 33 states have call predecessors, (49), 22 states have call successors, (49) [2024-11-22 23:05:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 244 transitions. [2024-11-22 23:05:16,638 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 244 transitions. Word has length 56 [2024-11-22 23:05:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:16,638 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 244 transitions. [2024-11-22 23:05:16,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:05:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 244 transitions. [2024-11-22 23:05:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 23:05:16,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:16,639 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:16,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 23:05:16,639 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:16,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1552143473, now seen corresponding path program 1 times [2024-11-22 23:05:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:16,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819851389] [2024-11-22 23:05:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:16,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-22 23:05:16,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:16,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819851389] [2024-11-22 23:05:16,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819851389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:16,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816440199] [2024-11-22 23:05:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:16,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:16,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:16,686 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 23:05:16,687 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 23:05:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:16,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:05:16,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:16,862 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 23:05:16,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 23:05:17,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816440199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:17,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:17,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2024-11-22 23:05:17,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960857764] [2024-11-22 23:05:17,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:17,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 23:05:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 23:05:17,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:05:17,041 INFO L87 Difference]: Start difference. First operand 190 states and 244 transitions. Second operand has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-22 23:05:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:17,390 INFO L93 Difference]: Finished difference Result 451 states and 615 transitions. [2024-11-22 23:05:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 23:05:17,390 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2024-11-22 23:05:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:17,392 INFO L225 Difference]: With dead ends: 451 [2024-11-22 23:05:17,392 INFO L226 Difference]: Without dead ends: 282 [2024-11-22 23:05:17,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 114 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2024-11-22 23:05:17,393 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 185 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:17,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 286 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:17,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-22 23:05:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-11-22 23:05:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 205 states have (on average 1.1317073170731706) internal successors, (232), 199 states have internal predecessors, (232), 32 states have call successors, (32), 12 states have call predecessors, (32), 16 states have return successors, (64), 45 states have call predecessors, (64), 31 states have call successors, (64) [2024-11-22 23:05:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 328 transitions. [2024-11-22 23:05:17,404 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 328 transitions. Word has length 68 [2024-11-22 23:05:17,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:17,404 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 328 transitions. [2024-11-22 23:05:17,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-22 23:05:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 328 transitions. [2024-11-22 23:05:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 23:05:17,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:17,405 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:17,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:17,605 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,SelfDestructingSolverStorable15 [2024-11-22 23:05:17,606 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:17,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash -814149297, now seen corresponding path program 1 times [2024-11-22 23:05:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:17,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329035351] [2024-11-22 23:05:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:17,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:17,645 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-22 23:05:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329035351] [2024-11-22 23:05:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329035351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:17,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:17,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:17,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687338797] [2024-11-22 23:05:17,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:17,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:17,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:17,646 INFO L87 Difference]: Start difference. First operand 257 states and 328 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:05:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:17,666 INFO L93 Difference]: Finished difference Result 279 states and 353 transitions. [2024-11-22 23:05:17,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:17,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2024-11-22 23:05:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:17,668 INFO L225 Difference]: With dead ends: 279 [2024-11-22 23:05:17,668 INFO L226 Difference]: Without dead ends: 278 [2024-11-22 23:05:17,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 23:05:17,668 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:17,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:17,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-22 23:05:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 265. [2024-11-22 23:05:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 212 states have (on average 1.1273584905660377) internal successors, (239), 205 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 17 states have return successors, (65), 47 states have call predecessors, (65), 31 states have call successors, (65) [2024-11-22 23:05:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 336 transitions. [2024-11-22 23:05:17,678 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 336 transitions. Word has length 62 [2024-11-22 23:05:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:17,678 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 336 transitions. [2024-11-22 23:05:17,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:05:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 336 transitions. [2024-11-22 23:05:17,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-22 23:05:17,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:17,679 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:17,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 23:05:17,679 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:17,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash 898913762, now seen corresponding path program 1 times [2024-11-22 23:05:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216624133] [2024-11-22 23:05:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:17,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 23:05:17,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216624133] [2024-11-22 23:05:17,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216624133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944773827] [2024-11-22 23:05:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:17,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:17,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:17,785 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 23:05:17,786 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 23:05:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:17,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 23:05:17,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-22 23:05:17,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:17,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944773827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:17,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:17,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-22 23:05:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450760976] [2024-11-22 23:05:17,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:17,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 23:05:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 23:05:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:17,922 INFO L87 Difference]: Start difference. First operand 265 states and 336 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 23:05:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:18,006 INFO L93 Difference]: Finished difference Result 348 states and 459 transitions. [2024-11-22 23:05:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 23:05:18,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 63 [2024-11-22 23:05:18,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:18,008 INFO L225 Difference]: With dead ends: 348 [2024-11-22 23:05:18,008 INFO L226 Difference]: Without dead ends: 347 [2024-11-22 23:05:18,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:18,009 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:18,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 232 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-22 23:05:18,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 295. [2024-11-22 23:05:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 236 states have (on average 1.13135593220339) internal successors, (267), 227 states have internal predecessors, (267), 34 states have call successors, (34), 12 states have call predecessors, (34), 21 states have return successors, (83), 55 states have call predecessors, (83), 33 states have call successors, (83) [2024-11-22 23:05:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 384 transitions. [2024-11-22 23:05:18,031 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 384 transitions. Word has length 63 [2024-11-22 23:05:18,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:18,031 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 384 transitions. [2024-11-22 23:05:18,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 23:05:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 384 transitions. [2024-11-22 23:05:18,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-22 23:05:18,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:18,034 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:18,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:18,234 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,SelfDestructingSolverStorable17 [2024-11-22 23:05:18,236 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:18,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash -121328009, now seen corresponding path program 1 times [2024-11-22 23:05:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:18,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846572334] [2024-11-22 23:05:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-22 23:05:18,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:18,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846572334] [2024-11-22 23:05:18,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846572334] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:18,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571699093] [2024-11-22 23:05:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:18,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:18,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:18,309 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 23:05:18,312 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 23:05:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:18,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 23:05:18,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:05:18,499 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:05:18,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571699093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:18,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:05:18,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 20 [2024-11-22 23:05:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88436524] [2024-11-22 23:05:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:18,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 23:05:18,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 23:05:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:05:18,500 INFO L87 Difference]: Start difference. First operand 295 states and 384 transitions. Second operand has 17 states, 16 states have (on average 3.6875) internal successors, (59), 10 states have internal predecessors, (59), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-22 23:05:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:18,749 INFO L93 Difference]: Finished difference Result 570 states and 767 transitions. [2024-11-22 23:05:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 23:05:18,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 10 states have internal predecessors, (59), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2024-11-22 23:05:18,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:18,751 INFO L225 Difference]: With dead ends: 570 [2024-11-22 23:05:18,751 INFO L226 Difference]: Without dead ends: 323 [2024-11-22 23:05:18,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2024-11-22 23:05:18,753 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 168 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:18,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 303 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-22 23:05:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 318. [2024-11-22 23:05:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 253 states have (on average 1.1304347826086956) internal successors, (286), 246 states have internal predecessors, (286), 36 states have call successors, (36), 14 states have call predecessors, (36), 25 states have return successors, (85), 57 states have call predecessors, (85), 35 states have call successors, (85) [2024-11-22 23:05:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 407 transitions. [2024-11-22 23:05:18,766 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 407 transitions. Word has length 84 [2024-11-22 23:05:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:18,766 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 407 transitions. [2024-11-22 23:05:18,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 10 states have internal predecessors, (59), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-22 23:05:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 407 transitions. [2024-11-22 23:05:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 23:05:18,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:18,768 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:18,774 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 23:05:18,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:18,969 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:18,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1999226584, now seen corresponding path program 1 times [2024-11-22 23:05:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:18,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313771763] [2024-11-22 23:05:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-22 23:05:19,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313771763] [2024-11-22 23:05:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313771763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:05:19,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:05:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:05:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837865671] [2024-11-22 23:05:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:05:19,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:05:19,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:05:19,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:19,010 INFO L87 Difference]: Start difference. First operand 318 states and 407 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:05:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:19,032 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2024-11-22 23:05:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:05:19,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-11-22 23:05:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:19,034 INFO L225 Difference]: With dead ends: 329 [2024-11-22 23:05:19,034 INFO L226 Difference]: Without dead ends: 328 [2024-11-22 23:05:19,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:05:19,035 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:19,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:05:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-22 23:05:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 321. [2024-11-22 23:05:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 256 states have (on average 1.12109375) internal successors, (287), 248 states have internal predecessors, (287), 36 states have call successors, (36), 14 states have call predecessors, (36), 25 states have return successors, (85), 58 states have call predecessors, (85), 35 states have call successors, (85) [2024-11-22 23:05:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 408 transitions. [2024-11-22 23:05:19,047 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 408 transitions. Word has length 67 [2024-11-22 23:05:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:19,047 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 408 transitions. [2024-11-22 23:05:19,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:05:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 408 transitions. [2024-11-22 23:05:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 23:05:19,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:19,049 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:19,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 23:05:19,049 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:19,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1319567220, now seen corresponding path program 1 times [2024-11-22 23:05:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547065450] [2024-11-22 23:05:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 23:05:19,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547065450] [2024-11-22 23:05:19,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547065450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:19,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419262507] [2024-11-22 23:05:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:19,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:19,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:19,172 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:19,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:05:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:19,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:05:19,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 23:05:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419262507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:19,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:19,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-11-22 23:05:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191344683] [2024-11-22 23:05:19,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:19,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:05:19,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:05:19,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:19,416 INFO L87 Difference]: Start difference. First operand 321 states and 408 transitions. Second operand has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:05:19,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:19,635 INFO L93 Difference]: Finished difference Result 608 states and 774 transitions. [2024-11-22 23:05:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 23:05:19,636 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 76 [2024-11-22 23:05:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:19,637 INFO L225 Difference]: With dead ends: 608 [2024-11-22 23:05:19,638 INFO L226 Difference]: Without dead ends: 346 [2024-11-22 23:05:19,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:05:19,639 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:19,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 426 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-22 23:05:19,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 319. [2024-11-22 23:05:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 255 states have (on average 1.1176470588235294) internal successors, (285), 246 states have internal predecessors, (285), 36 states have call successors, (36), 14 states have call predecessors, (36), 24 states have return successors, (81), 58 states have call predecessors, (81), 35 states have call successors, (81) [2024-11-22 23:05:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 402 transitions. [2024-11-22 23:05:19,651 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 402 transitions. Word has length 76 [2024-11-22 23:05:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:19,651 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 402 transitions. [2024-11-22 23:05:19,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:05:19,652 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 402 transitions. [2024-11-22 23:05:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-22 23:05:19,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:19,652 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:19,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 23:05:19,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-22 23:05:19,853 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:19,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1385478177, now seen corresponding path program 1 times [2024-11-22 23:05:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563673582] [2024-11-22 23:05:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 23:05:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563673582] [2024-11-22 23:05:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563673582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840366051] [2024-11-22 23:05:19,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:19,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:19,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:19,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:19,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:05:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:19,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 23:05:19,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 23:05:20,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 23:05:20,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840366051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:20,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:20,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-11-22 23:05:20,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009627024] [2024-11-22 23:05:20,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:20,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 23:05:20,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 23:05:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 23:05:20,138 INFO L87 Difference]: Start difference. First operand 319 states and 402 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:05:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:20,271 INFO L93 Difference]: Finished difference Result 565 states and 709 transitions. [2024-11-22 23:05:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:05:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-22 23:05:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:20,274 INFO L225 Difference]: With dead ends: 565 [2024-11-22 23:05:20,274 INFO L226 Difference]: Without dead ends: 323 [2024-11-22 23:05:20,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:20,276 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 89 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:20,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 336 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-22 23:05:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 317. [2024-11-22 23:05:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 253 states have (on average 1.1185770750988142) internal successors, (283), 245 states have internal predecessors, (283), 36 states have call successors, (36), 14 states have call predecessors, (36), 24 states have return successors, (80), 57 states have call predecessors, (80), 35 states have call successors, (80) [2024-11-22 23:05:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 399 transitions. [2024-11-22 23:05:20,290 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 399 transitions. Word has length 77 [2024-11-22 23:05:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:20,290 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 399 transitions. [2024-11-22 23:05:20,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:05:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 399 transitions. [2024-11-22 23:05:20,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 23:05:20,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:20,291 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:20,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 23:05:20,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 23:05:20,492 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:20,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:20,492 INFO L85 PathProgramCache]: Analyzing trace with hash 67577538, now seen corresponding path program 1 times [2024-11-22 23:05:20,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:20,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457742369] [2024-11-22 23:05:20,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:20,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-22 23:05:20,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:20,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457742369] [2024-11-22 23:05:20,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457742369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:20,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323430309] [2024-11-22 23:05:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:20,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:20,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:20,654 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:20,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 23:05:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:20,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:20,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-22 23:05:20,787 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-22 23:05:20,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323430309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:20,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:20,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 7] total 27 [2024-11-22 23:05:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157156373] [2024-11-22 23:05:20,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:20,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 23:05:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 23:05:20,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2024-11-22 23:05:20,967 INFO L87 Difference]: Start difference. First operand 317 states and 399 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:05:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:21,698 INFO L93 Difference]: Finished difference Result 630 states and 824 transitions. [2024-11-22 23:05:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 23:05:21,698 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 80 [2024-11-22 23:05:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:21,700 INFO L225 Difference]: With dead ends: 630 [2024-11-22 23:05:21,700 INFO L226 Difference]: Without dead ends: 376 [2024-11-22 23:05:21,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=364, Invalid=2392, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 23:05:21,702 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 198 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:21,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 293 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 23:05:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-22 23:05:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 312. [2024-11-22 23:05:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 246 states have (on average 1.0934959349593496) internal successors, (269), 245 states have internal predecessors, (269), 37 states have call successors, (37), 14 states have call predecessors, (37), 25 states have return successors, (72), 52 states have call predecessors, (72), 36 states have call successors, (72) [2024-11-22 23:05:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 378 transitions. [2024-11-22 23:05:21,715 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 378 transitions. Word has length 80 [2024-11-22 23:05:21,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:21,715 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 378 transitions. [2024-11-22 23:05:21,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 23:05:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 378 transitions. [2024-11-22 23:05:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-22 23:05:21,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:21,717 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:21,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 23:05:21,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 23:05:21,918 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:21,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1504852425, now seen corresponding path program 1 times [2024-11-22 23:05:21,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:21,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117401630] [2024-11-22 23:05:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:05:22,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:22,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117401630] [2024-11-22 23:05:22,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117401630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:22,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316620966] [2024-11-22 23:05:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:22,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:22,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:22,096 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:22,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 23:05:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:22,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 23:05:22,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-22 23:05:22,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-22 23:05:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316620966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:22,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:22,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 32 [2024-11-22 23:05:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416164292] [2024-11-22 23:05:22,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:22,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-22 23:05:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-22 23:05:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2024-11-22 23:05:22,629 INFO L87 Difference]: Start difference. First operand 312 states and 378 transitions. Second operand has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 23:05:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:23,809 INFO L93 Difference]: Finished difference Result 763 states and 1024 transitions. [2024-11-22 23:05:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-22 23:05:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2024-11-22 23:05:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:23,812 INFO L225 Difference]: With dead ends: 763 [2024-11-22 23:05:23,812 INFO L226 Difference]: Without dead ends: 475 [2024-11-22 23:05:23,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=779, Invalid=5227, Unknown=0, NotChecked=0, Total=6006 [2024-11-22 23:05:23,815 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 217 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:23,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 381 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 23:05:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-22 23:05:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 349. [2024-11-22 23:05:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 276 states have (on average 1.0905797101449275) internal successors, (301), 271 states have internal predecessors, (301), 40 states have call successors, (40), 13 states have call predecessors, (40), 29 states have return successors, (123), 64 states have call predecessors, (123), 39 states have call successors, (123) [2024-11-22 23:05:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 464 transitions. [2024-11-22 23:05:23,830 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 464 transitions. Word has length 81 [2024-11-22 23:05:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:23,831 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 464 transitions. [2024-11-22 23:05:23,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-22 23:05:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 464 transitions. [2024-11-22 23:05:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-22 23:05:23,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:23,832 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:23,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:24,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:24,033 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:24,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2129556593, now seen corresponding path program 1 times [2024-11-22 23:05:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382962761] [2024-11-22 23:05:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-22 23:05:24,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382962761] [2024-11-22 23:05:24,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382962761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848960336] [2024-11-22 23:05:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:24,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:24,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:24,090 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:24,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 23:05:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:24,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:24,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 23:05:24,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-22 23:05:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848960336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:24,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:24,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 17 [2024-11-22 23:05:24,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929098629] [2024-11-22 23:05:24,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:24,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 23:05:24,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 23:05:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-22 23:05:24,412 INFO L87 Difference]: Start difference. First operand 349 states and 464 transitions. Second operand has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-22 23:05:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:24,602 INFO L93 Difference]: Finished difference Result 649 states and 910 transitions. [2024-11-22 23:05:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:05:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 94 [2024-11-22 23:05:24,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:24,605 INFO L225 Difference]: With dead ends: 649 [2024-11-22 23:05:24,605 INFO L226 Difference]: Without dead ends: 355 [2024-11-22 23:05:24,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 173 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:05:24,607 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 119 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:24,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 395 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-22 23:05:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 349. [2024-11-22 23:05:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 276 states have (on average 1.0905797101449275) internal successors, (301), 271 states have internal predecessors, (301), 40 states have call successors, (40), 13 states have call predecessors, (40), 29 states have return successors, (122), 64 states have call predecessors, (122), 39 states have call successors, (122) [2024-11-22 23:05:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 463 transitions. [2024-11-22 23:05:24,620 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 463 transitions. Word has length 94 [2024-11-22 23:05:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:24,621 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 463 transitions. [2024-11-22 23:05:24,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-22 23:05:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 463 transitions. [2024-11-22 23:05:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-22 23:05:24,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:24,621 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:24,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 23:05:24,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:24,825 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:24,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash -506977808, now seen corresponding path program 2 times [2024-11-22 23:05:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594700612] [2024-11-22 23:05:24,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:24,837 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:24,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-22 23:05:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594700612] [2024-11-22 23:05:25,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594700612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:25,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452850206] [2024-11-22 23:05:25,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:25,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:25,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:25,024 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:25,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 23:05:25,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:25,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:25,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 23:05:25,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-22 23:05:25,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-22 23:05:25,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452850206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:25,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:25,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-22 23:05:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175464330] [2024-11-22 23:05:25,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:25,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 23:05:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 23:05:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 23:05:25,570 INFO L87 Difference]: Start difference. First operand 349 states and 463 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-22 23:05:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:26,030 INFO L93 Difference]: Finished difference Result 660 states and 938 transitions. [2024-11-22 23:05:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-22 23:05:26,031 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 95 [2024-11-22 23:05:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:26,034 INFO L225 Difference]: With dead ends: 660 [2024-11-22 23:05:26,034 INFO L226 Difference]: Without dead ends: 657 [2024-11-22 23:05:26,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 166 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=2568, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 23:05:26,037 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 38 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:26,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 688 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-22 23:05:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 416. [2024-11-22 23:05:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 327 states have (on average 1.0642201834862386) internal successors, (348), 326 states have internal predecessors, (348), 47 states have call successors, (47), 13 states have call predecessors, (47), 38 states have return successors, (186), 76 states have call predecessors, (186), 46 states have call successors, (186) [2024-11-22 23:05:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 581 transitions. [2024-11-22 23:05:26,060 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 581 transitions. Word has length 95 [2024-11-22 23:05:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:26,060 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 581 transitions. [2024-11-22 23:05:26,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-22 23:05:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 581 transitions. [2024-11-22 23:05:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 23:05:26,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:26,062 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:26,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:26,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-22 23:05:26,267 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:26,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1463557235, now seen corresponding path program 1 times [2024-11-22 23:05:26,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:26,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230274781] [2024-11-22 23:05:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:26,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-22 23:05:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230274781] [2024-11-22 23:05:26,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230274781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:26,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790531483] [2024-11-22 23:05:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:26,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:26,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:26,455 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:26,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 23:05:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:26,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 23:05:26,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-22 23:05:26,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-22 23:05:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790531483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:26,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2024-11-22 23:05:26,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95430211] [2024-11-22 23:05:26,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:26,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 23:05:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 23:05:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 23:05:26,975 INFO L87 Difference]: Start difference. First operand 416 states and 581 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-22 23:05:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:27,196 INFO L93 Difference]: Finished difference Result 572 states and 773 transitions. [2024-11-22 23:05:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 23:05:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 96 [2024-11-22 23:05:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:27,199 INFO L225 Difference]: With dead ends: 572 [2024-11-22 23:05:27,199 INFO L226 Difference]: Without dead ends: 570 [2024-11-22 23:05:27,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 23:05:27,200 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 30 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:27,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 440 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-22 23:05:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 412. [2024-11-22 23:05:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 323 states have (on average 1.0402476780185759) internal successors, (336), 324 states have internal predecessors, (336), 45 states have call successors, (45), 13 states have call predecessors, (45), 40 states have return successors, (178), 74 states have call predecessors, (178), 44 states have call successors, (178) [2024-11-22 23:05:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 559 transitions. [2024-11-22 23:05:27,219 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 559 transitions. Word has length 96 [2024-11-22 23:05:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:27,219 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 559 transitions. [2024-11-22 23:05:27,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-22 23:05:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 559 transitions. [2024-11-22 23:05:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-22 23:05:27,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:27,221 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-22 23:05:27,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:27,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-22 23:05:27,424 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:27,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:27,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1096167196, now seen corresponding path program 1 times [2024-11-22 23:05:27,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:27,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590569950] [2024-11-22 23:05:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:27,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 85 proven. 143 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-22 23:05:27,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:27,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590569950] [2024-11-22 23:05:27,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590569950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:27,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683176256] [2024-11-22 23:05:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:05:27,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:27,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:27,602 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:27,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 23:05:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:05:27,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 23:05:27,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 65 proven. 91 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-22 23:05:27,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 91 proven. 83 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-22 23:05:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683176256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:29,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:29,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 26] total 51 [2024-11-22 23:05:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577747685] [2024-11-22 23:05:29,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:29,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-22 23:05:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-22 23:05:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2325, Unknown=0, NotChecked=0, Total=2550 [2024-11-22 23:05:29,241 INFO L87 Difference]: Start difference. First operand 412 states and 559 transitions. Second operand has 51 states, 50 states have (on average 3.52) internal successors, (176), 49 states have internal predecessors, (176), 19 states have call successors, (25), 3 states have call predecessors, (25), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) [2024-11-22 23:05:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:30,745 INFO L93 Difference]: Finished difference Result 1035 states and 1424 transitions. [2024-11-22 23:05:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-22 23:05:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.52) internal successors, (176), 49 states have internal predecessors, (176), 19 states have call successors, (25), 3 states have call predecessors, (25), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) Word has length 167 [2024-11-22 23:05:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:30,748 INFO L225 Difference]: With dead ends: 1035 [2024-11-22 23:05:30,748 INFO L226 Difference]: Without dead ends: 544 [2024-11-22 23:05:30,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 284 SyntacticMatches, 16 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4313 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1523, Invalid=12049, Unknown=0, NotChecked=0, Total=13572 [2024-11-22 23:05:30,753 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 241 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:30,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 416 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 23:05:30,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-22 23:05:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 331. [2024-11-22 23:05:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 259 states have (on average 1.0308880308880308) internal successors, (267), 263 states have internal predecessors, (267), 38 states have call successors, (38), 13 states have call predecessors, (38), 32 states have return successors, (100), 54 states have call predecessors, (100), 37 states have call successors, (100) [2024-11-22 23:05:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 405 transitions. [2024-11-22 23:05:30,772 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 405 transitions. Word has length 167 [2024-11-22 23:05:30,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:30,772 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 405 transitions. [2024-11-22 23:05:30,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.52) internal successors, (176), 49 states have internal predecessors, (176), 19 states have call successors, (25), 3 states have call predecessors, (25), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) [2024-11-22 23:05:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 405 transitions. [2024-11-22 23:05:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-22 23:05:30,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:30,774 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:30,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 23:05:30,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-22 23:05:30,974 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:30,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1091901888, now seen corresponding path program 2 times [2024-11-22 23:05:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405092181] [2024-11-22 23:05:30,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:30,989 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:30,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 120 proven. 68 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-22 23:05:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:31,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405092181] [2024-11-22 23:05:31,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405092181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:31,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064248025] [2024-11-22 23:05:31,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:31,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:31,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:31,155 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:31,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 23:05:31,222 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:31,222 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:31,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 23:05:31,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 118 proven. 69 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-22 23:05:31,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 118 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-22 23:05:31,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064248025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:31,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:31,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 17 [2024-11-22 23:05:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284890021] [2024-11-22 23:05:31,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:31,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 23:05:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 23:05:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-22 23:05:31,582 INFO L87 Difference]: Start difference. First operand 331 states and 405 transitions. Second operand has 17 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-22 23:05:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:31,728 INFO L93 Difference]: Finished difference Result 577 states and 724 transitions. [2024-11-22 23:05:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:05:31,728 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 150 [2024-11-22 23:05:31,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:31,731 INFO L225 Difference]: With dead ends: 577 [2024-11-22 23:05:31,732 INFO L226 Difference]: Without dead ends: 321 [2024-11-22 23:05:31,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 290 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-22 23:05:31,734 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 76 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:31,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 217 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-22 23:05:31,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 288. [2024-11-22 23:05:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 225 states have (on average 1.0266666666666666) internal successors, (231), 230 states have internal predecessors, (231), 34 states have call successors, (34), 13 states have call predecessors, (34), 28 states have return successors, (72), 44 states have call predecessors, (72), 33 states have call successors, (72) [2024-11-22 23:05:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 337 transitions. [2024-11-22 23:05:31,749 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 337 transitions. Word has length 150 [2024-11-22 23:05:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:31,749 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 337 transitions. [2024-11-22 23:05:31,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-22 23:05:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 337 transitions. [2024-11-22 23:05:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-22 23:05:31,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:31,752 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1] [2024-11-22 23:05:31,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-22 23:05:31,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 23:05:31,956 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:31,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash -94581914, now seen corresponding path program 2 times [2024-11-22 23:05:31,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273500192] [2024-11-22 23:05:31,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:31,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:31,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 128 proven. 47 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-22 23:05:32,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:32,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273500192] [2024-11-22 23:05:32,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273500192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:32,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771964718] [2024-11-22 23:05:32,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 23:05:32,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:32,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:32,067 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:32,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 23:05:32,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 23:05:32,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:32,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 23:05:32,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 355 proven. 58 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-22 23:05:32,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 109 proven. 120 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-22 23:05:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771964718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:32,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:32,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 16 [2024-11-22 23:05:32,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771595925] [2024-11-22 23:05:32,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:32,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 23:05:32,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:32,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 23:05:32,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-22 23:05:32,543 INFO L87 Difference]: Start difference. First operand 288 states and 337 transitions. Second operand has 16 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-22 23:05:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:32,735 INFO L93 Difference]: Finished difference Result 550 states and 650 transitions. [2024-11-22 23:05:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:05:32,735 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) Word has length 201 [2024-11-22 23:05:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:32,737 INFO L225 Difference]: With dead ends: 550 [2024-11-22 23:05:32,737 INFO L226 Difference]: Without dead ends: 286 [2024-11-22 23:05:32,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 390 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:05:32,738 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 74 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:32,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 298 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-22 23:05:32,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2024-11-22 23:05:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 174 states have (on average 1.028735632183908) internal successors, (179), 178 states have internal predecessors, (179), 27 states have call successors, (27), 14 states have call predecessors, (27), 20 states have return successors, (43), 29 states have call predecessors, (43), 26 states have call successors, (43) [2024-11-22 23:05:32,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2024-11-22 23:05:32,749 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 201 [2024-11-22 23:05:32,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:32,749 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 249 transitions. [2024-11-22 23:05:32,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-22 23:05:32,750 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 249 transitions. [2024-11-22 23:05:32,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-22 23:05:32,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:32,751 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2024-11-22 23:05:32,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-22 23:05:32,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:32,956 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:32,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash -583368304, now seen corresponding path program 3 times [2024-11-22 23:05:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:32,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994714896] [2024-11-22 23:05:32,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:05:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:32,968 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 23:05:32,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 237 proven. 20 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2024-11-22 23:05:33,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994714896] [2024-11-22 23:05:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994714896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398508515] [2024-11-22 23:05:33,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 23:05:33,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:33,059 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:33,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 23:05:33,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 23:05:33,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:33,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 23:05:33,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 265 proven. 28 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-22 23:05:33,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 265 proven. 28 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-22 23:05:33,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398508515] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:33,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:33,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-22 23:05:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440466258] [2024-11-22 23:05:33,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:33,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 23:05:33,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:33,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 23:05:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:05:33,537 INFO L87 Difference]: Start difference. First operand 222 states and 249 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-22 23:05:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:33,709 INFO L93 Difference]: Finished difference Result 391 states and 460 transitions. [2024-11-22 23:05:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 23:05:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 222 [2024-11-22 23:05:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:33,711 INFO L225 Difference]: With dead ends: 391 [2024-11-22 23:05:33,711 INFO L226 Difference]: Without dead ends: 234 [2024-11-22 23:05:33,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 432 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-22 23:05:33,712 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 119 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:33,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 151 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:33,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-22 23:05:33,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2024-11-22 23:05:33,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 181 states have (on average 1.0276243093922652) internal successors, (186), 182 states have internal predecessors, (186), 27 states have call successors, (27), 17 states have call predecessors, (27), 20 states have return successors, (41), 29 states have call predecessors, (41), 26 states have call successors, (41) [2024-11-22 23:05:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 254 transitions. [2024-11-22 23:05:33,722 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 254 transitions. Word has length 222 [2024-11-22 23:05:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:33,722 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 254 transitions. [2024-11-22 23:05:33,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-22 23:05:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 254 transitions. [2024-11-22 23:05:33,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-22 23:05:33,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:33,725 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 12, 11, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 1, 1, 1, 1] [2024-11-22 23:05:33,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:33,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:33,926 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:33,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:33,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1657552558, now seen corresponding path program 4 times [2024-11-22 23:05:33,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:33,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505183054] [2024-11-22 23:05:33,927 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:05:33,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:33,937 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:05:33,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 317 proven. 123 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-22 23:05:34,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505183054] [2024-11-22 23:05:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505183054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809068030] [2024-11-22 23:05:34,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 23:05:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:34,078 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:34,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 23:05:34,157 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 23:05:34,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:34,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 23:05:34,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 345 proven. 129 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2024-11-22 23:05:34,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 345 proven. 141 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-22 23:05:34,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809068030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:34,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:34,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 20 [2024-11-22 23:05:34,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3512585] [2024-11-22 23:05:34,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:34,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:05:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:05:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:05:34,923 INFO L87 Difference]: Start difference. First operand 229 states and 254 transitions. Second operand has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-22 23:05:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:35,145 INFO L93 Difference]: Finished difference Result 278 states and 313 transitions. [2024-11-22 23:05:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 23:05:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) Word has length 260 [2024-11-22 23:05:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:35,147 INFO L225 Difference]: With dead ends: 278 [2024-11-22 23:05:35,147 INFO L226 Difference]: Without dead ends: 233 [2024-11-22 23:05:35,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 508 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:05:35,148 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:35,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 318 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-22 23:05:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 215. [2024-11-22 23:05:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 171 states have internal predecessors, (175), 26 states have call successors, (26), 17 states have call predecessors, (26), 18 states have return successors, (35), 26 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-22 23:05:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 236 transitions. [2024-11-22 23:05:35,159 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 236 transitions. Word has length 260 [2024-11-22 23:05:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:35,160 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 236 transitions. [2024-11-22 23:05:35,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-22 23:05:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 236 transitions. [2024-11-22 23:05:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-22 23:05:35,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:35,161 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2024-11-22 23:05:35,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:35,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:35,366 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:35,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:35,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1967493030, now seen corresponding path program 5 times [2024-11-22 23:05:35,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:35,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540653414] [2024-11-22 23:05:35,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:05:35,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:35,394 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-22 23:05:35,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 162 proven. 245 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-11-22 23:05:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540653414] [2024-11-22 23:05:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540653414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673127025] [2024-11-22 23:05:36,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 23:05:36,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:36,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:36,490 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:36,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 23:05:36,591 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-22 23:05:36,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:36,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-22 23:05:36,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-22 23:05:36,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-11-22 23:05:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673127025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:39,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 29] total 57 [2024-11-22 23:05:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426902413] [2024-11-22 23:05:39,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:39,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-22 23:05:39,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-22 23:05:39,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2892, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 23:05:39,036 INFO L87 Difference]: Start difference. First operand 215 states and 236 transitions. Second operand has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2024-11-22 23:05:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:39,296 INFO L93 Difference]: Finished difference Result 297 states and 329 transitions. [2024-11-22 23:05:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 23:05:39,297 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) Word has length 241 [2024-11-22 23:05:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:39,298 INFO L225 Difference]: With dead ends: 297 [2024-11-22 23:05:39,298 INFO L226 Difference]: Without dead ends: 279 [2024-11-22 23:05:39,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 446 SyntacticMatches, 27 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=3859, Unknown=0, NotChecked=0, Total=4422 [2024-11-22 23:05:39,300 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:39,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 728 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:05:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-22 23:05:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 265. [2024-11-22 23:05:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 209 states have (on average 1.0239234449760766) internal successors, (214), 210 states have internal predecessors, (214), 31 states have call successors, (31), 17 states have call predecessors, (31), 24 states have return successors, (49), 37 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-22 23:05:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 294 transitions. [2024-11-22 23:05:39,312 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 294 transitions. Word has length 241 [2024-11-22 23:05:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:39,313 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 294 transitions. [2024-11-22 23:05:39,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2024-11-22 23:05:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 294 transitions. [2024-11-22 23:05:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-22 23:05:39,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:05:39,315 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1] [2024-11-22 23:05:39,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-22 23:05:39,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:39,518 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-22 23:05:39,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:05:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 207888092, now seen corresponding path program 6 times [2024-11-22 23:05:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:05:39,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377166227] [2024-11-22 23:05:39,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 23:05:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:05:39,538 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-22 23:05:39,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 221 proven. 27 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-22 23:05:39,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:05:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377166227] [2024-11-22 23:05:39,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377166227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:05:39,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795106926] [2024-11-22 23:05:39,625 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 23:05:39,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:05:39,627 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:05:39,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 23:05:39,743 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-22 23:05:39,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 23:05:39,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:05:39,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:05:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 431 proven. 4 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-11-22 23:05:39,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:05:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 254 proven. 31 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-22 23:05:40,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795106926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:05:40,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:05:40,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-22 23:05:40,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527248986] [2024-11-22 23:05:40,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:05:40,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:05:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:05:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:05:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-22 23:05:40,086 INFO L87 Difference]: Start difference. First operand 265 states and 294 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-22 23:05:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:05:40,221 INFO L93 Difference]: Finished difference Result 412 states and 459 transitions. [2024-11-22 23:05:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 23:05:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) Word has length 243 [2024-11-22 23:05:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:05:40,222 INFO L225 Difference]: With dead ends: 412 [2024-11-22 23:05:40,222 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 23:05:40,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 474 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-22 23:05:40,224 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 89 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:05:40,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 199 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:05:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 23:05:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 23:05:40,224 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 23:05:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 23:05:40,224 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 243 [2024-11-22 23:05:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:05:40,225 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 23:05:40,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-22 23:05:40,225 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 23:05:40,225 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 23:05:40,227 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-22 23:05:40,227 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-22 23:05:40,228 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-22 23:05:40,229 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-22 23:05:40,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-22 23:05:40,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:05:40,432 INFO L407 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:05:40,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 23:05:52,210 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 23:05:52,226 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 23:05:52,241 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-22 23:05:52,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:05:52 BoogieIcfgContainer [2024-11-22 23:05:52,241 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 23:05:52,241 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 23:05:52,242 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 23:05:52,242 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 23:05:52,242 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:05:10" (3/4) ... [2024-11-22 23:05:52,244 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 23:05:52,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-22 23:05:52,247 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-22 23:05:52,250 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-22 23:05:52,250 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 23:05:52,250 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 23:05:52,250 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 23:05:52,309 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 23:05:52,309 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 23:05:52,309 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 23:05:52,309 INFO L158 Benchmark]: Toolchain (without parser) took 42103.52ms. Allocated memory was 167.8MB in the beginning and 830.5MB in the end (delta: 662.7MB). Free memory was 97.3MB in the beginning and 743.4MB in the end (delta: -646.1MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,309 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 167.8MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:52,310 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.29ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 85.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.21ms. Allocated memory is still 167.8MB. Free memory was 85.0MB in the beginning and 83.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,310 INFO L158 Benchmark]: Boogie Preprocessor took 37.49ms. Allocated memory is still 167.8MB. Free memory was 83.6MB in the beginning and 81.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 23:05:52,310 INFO L158 Benchmark]: RCFGBuilder took 288.27ms. Allocated memory is still 167.8MB. Free memory was 81.9MB in the beginning and 129.6MB in the end (delta: -47.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,310 INFO L158 Benchmark]: TraceAbstraction took 41479.31ms. Allocated memory was 167.8MB in the beginning and 830.5MB in the end (delta: 662.7MB). Free memory was 129.6MB in the beginning and 747.6MB in the end (delta: -618.0MB). Peak memory consumption was 497.7MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,310 INFO L158 Benchmark]: Witness Printer took 67.52ms. Allocated memory is still 830.5MB. Free memory was 747.6MB in the beginning and 743.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 23:05:52,311 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 167.8MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.29ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 85.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.21ms. Allocated memory is still 167.8MB. Free memory was 85.0MB in the beginning and 83.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.49ms. Allocated memory is still 167.8MB. Free memory was 83.6MB in the beginning and 81.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.27ms. Allocated memory is still 167.8MB. Free memory was 81.9MB in the beginning and 129.6MB in the end (delta: -47.7MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * TraceAbstraction took 41479.31ms. Allocated memory was 167.8MB in the beginning and 830.5MB in the end (delta: 662.7MB). Free memory was 129.6MB in the beginning and 747.6MB in the end (delta: -618.0MB). Peak memory consumption was 497.7MB. Max. memory is 16.1GB. * Witness Printer took 67.52ms. Allocated memory is still 830.5MB. Free memory was 747.6MB in the beginning and 743.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: 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 3 procedures, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 29.6s, OverallIterations: 34, TraceHistogramMax: 14, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2477 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2373 mSDsluCounter, 9992 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8701 mSDsCounter, 849 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11486 IncrementalHoareTripleChecker+Invalid, 12335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 849 mSolverCounterUnsat, 1291 mSDtfsCounter, 11486 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5444 GetRequests, 4530 SyntacticMatches, 154 SemanticMatches, 760 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12305 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=26, InterpolantAutomatonStates: 555, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 34 MinimizatonAttempts, 1209 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 5468 NumberOfCodeBlocks, 4916 NumberOfCodeBlocksAsserted, 100 NumberOfCheckSat, 7664 ConstructedInterpolants, 0 QuantifiedInterpolants, 14515 SizeOfPredicates, 56 NumberOfNonLiveVariables, 4737 ConjunctsInSsa, 316 ConjunctsInUnsatCore, 76 InterpolantComputations, 16 PerfectInterpolantSequences, 16211/18892 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 12 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Requires: (n <= 5) Ensures: (((0 <= \result) && (\result <= 5)) || (n < 5)) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1. Requires: ((6 == n) || (n < 5)) Ensures: ((6 == n) || (n < 5)) RESULT: Ultimate proved your program to be correct! [2024-11-22 23:05:52,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE