This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 06:26:05,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:26:05,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:26:05,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:26:05,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:26:05,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:26:05,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:26:05,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:26:05,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:26:05,884 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:26:05,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:26:05,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:26:05,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:26:05,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:26:05,893 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:26:05,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:26:05,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:26:05,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:26:05,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:26:05,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:26:05,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:26:05,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:26:05,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:26:05,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:26:05,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:26:05,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:26:05,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:26:05,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:26:05,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:26:05,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:26:05,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:26:05,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:26:05,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:26:05,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:26:05,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:26:05,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:26:05,905 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:26:06,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:26:06,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:26:06,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:26:06,159 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:26:06,160 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:26:06,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_4-1.yml/witness-2.1.yml [2024-09-13 06:26:06,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:26:06,242 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:26:06,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2024-09-13 06:26:07,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:26:07,691 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:26:07,691 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2024-09-13 06:26:07,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c8968cae5/9350ba0b909e4b22b335bb9397f0033a/FLAG1c8887ea9 [2024-09-13 06:26:07,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c8968cae5/9350ba0b909e4b22b335bb9397f0033a [2024-09-13 06:26:07,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:26:07,710 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:26:07,711 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:26:07,711 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:26:07,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:26:07,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:26:06" (1/2) ... [2024-09-13 06:26:07,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dec6d38 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:26:07, skipping insertion in model container [2024-09-13 06:26:07,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:26:06" (1/2) ... [2024-09-13 06:26:07,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@db08d5e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:26:07, skipping insertion in model container [2024-09-13 06:26:07,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:26:07" (2/2) ... [2024-09-13 06:26:07,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dec6d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07, skipping insertion in model container [2024-09-13 06:26:07,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:26:07" (2/2) ... [2024-09-13 06:26:07,722 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:26:07,727 INFO L1541 ArrayList]: Function contract at [L9]: requires null, ensures (((((\result == 1) || (\old(n) < 1)) || (2 < \old(n))) && (((\result == 0) || (1 < \old(n))) || (\old(n) == 1))) && ((((3 == \old(n)) || (4 < \old(n))) || (\old(n) < 2)) || ((3 == \result) && (\old(n) == 4)))) [2024-09-13 06:26:07,727 INFO L1541 ArrayList]: Function contract at [L19]: requires null, ensures (((((\result == 1) && (\old(n) == 1)) || (\result == 0)) || (1 < \old(n))) && (((((\result == 1) && (\old(n) == 1)) || (\old(n) < 1)) || (3 < \old(n))) || ((\result == 1) && (2 == \old(n))))) [2024-09-13 06:26:07,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:26:07,898 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2024-09-13 06:26:07,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:26:07,916 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 06:26:07,967 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c[946,959] [2024-09-13 06:26:07,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:26:07,985 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:26:07,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07 WrapperNode [2024-09-13 06:26:07,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:26:07,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:26:07,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:26:07,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:26:07,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,016 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-09-13 06:26:08,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:26:08,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:26:08,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:26:08,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:26:08,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,032 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibo2 is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:26:08,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,035 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:26:08,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:26:08,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:26:08,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:26:08,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (1/1) ... [2024-09-13 06:26:08,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:26:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:26:08,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 06:26:08,070 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 06:26:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:26:08,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:26:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-09-13 06:26:08,110 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-09-13 06:26:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-09-13 06:26:08,110 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-09-13 06:26:08,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:26:08,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:26:08,162 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:26:08,163 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:26:08,294 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-13 06:26:08,294 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:26:08,320 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:26:08,320 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:26:08,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:26:08 BoogieIcfgContainer [2024-09-13 06:26:08,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:26:08,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:26:08,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:26:08,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:26:08,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:26:06" (1/4) ... [2024-09-13 06:26:08,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fe3fd6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:26:08, skipping insertion in model container [2024-09-13 06:26:08,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:26:07" (2/4) ... [2024-09-13 06:26:08,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fe3fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:26:08, skipping insertion in model container [2024-09-13 06:26:08,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:26:07" (3/4) ... [2024-09-13 06:26:08,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fe3fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:26:08, skipping insertion in model container [2024-09-13 06:26:08,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:26:08" (4/4) ... [2024-09-13 06:26:08,331 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2024-09-13 06:26:08,343 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:26:08,344 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-13 06:26:08,382 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:26:08,387 INFO L336 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=None, 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;@784ab3a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:26:08,387 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-13 06:26:08,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 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) [2024-09-13 06:26:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:26:08,396 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:08,397 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:26:08,397 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:08,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash 83656213, now seen corresponding path program 1 times [2024-09-13 06:26:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:08,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052708580] [2024-09-13 06:26:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:08,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:08,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052708580] [2024-09-13 06:26:08,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052708580] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:26:08,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:26:08,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:26:08,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641557660] [2024-09-13 06:26:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:26:08,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:26:08,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:26:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:26:08,648 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 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 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-09-13 06:26:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:08,734 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2024-09-13 06:26:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:26:08,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2024-09-13 06:26:08,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:08,742 INFO L225 Difference]: With dead ends: 38 [2024-09-13 06:26:08,742 INFO L226 Difference]: Without dead ends: 36 [2024-09-13 06:26:08,743 INFO L433 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 [2024-09-13 06:26:08,746 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:08,746 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 103 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:26:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-13 06:26:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-09-13 06:26:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 06:26:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-09-13 06:26:08,779 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 5 [2024-09-13 06:26:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:08,780 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-09-13 06:26:08,780 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-09-13 06:26:08,780 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-09-13 06:26:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 06:26:08,781 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:08,781 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:08,781 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:26:08,781 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:08,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 422480245, now seen corresponding path program 1 times [2024-09-13 06:26:08,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505855567] [2024-09-13 06:26:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:08,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505855567] [2024-09-13 06:26:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505855567] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:26:08,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:26:08,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 06:26:08,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884064851] [2024-09-13 06:26:08,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:26:08,863 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:26:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:26:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 06:26:08,871 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-09-13 06:26:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:08,922 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2024-09-13 06:26:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 06:26:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2024-09-13 06:26:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:08,925 INFO L225 Difference]: With dead ends: 40 [2024-09-13 06:26:08,925 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 06:26:08,926 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 06:26:08,927 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:08,928 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:26:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 06:26:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-09-13 06:26:08,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 06:26:08,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-09-13 06:26:08,942 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 9 [2024-09-13 06:26:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:08,943 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-09-13 06:26:08,943 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2024-09-13 06:26:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-09-13 06:26:08,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-13 06:26:08,944 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:08,944 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:08,945 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 06:26:08,945 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:08,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash 211986483, now seen corresponding path program 1 times [2024-09-13 06:26:08,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:08,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422044612] [2024-09-13 06:26:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:08,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:09,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422044612] [2024-09-13 06:26:09,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422044612] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:26:09,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:26:09,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 06:26:09,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286730909] [2024-09-13 06:26:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:26:09,037 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 06:26:09,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:09,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 06:26:09,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:26:09,039 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-09-13 06:26:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:09,160 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-09-13 06:26:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:26:09,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2024-09-13 06:26:09,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:09,162 INFO L225 Difference]: With dead ends: 47 [2024-09-13 06:26:09,163 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 06:26:09,164 INFO L433 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 [2024-09-13 06:26:09,165 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:09,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 149 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:26:09,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 06:26:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-09-13 06:26:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 06:26:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-09-13 06:26:09,173 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 10 [2024-09-13 06:26:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:09,173 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-09-13 06:26:09,173 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-09-13 06:26:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-09-13 06:26:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-13 06:26:09,174 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:09,174 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:09,174 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 06:26:09,174 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:09,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1688882568, now seen corresponding path program 1 times [2024-09-13 06:26:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:09,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386762274] [2024-09-13 06:26:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:09,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386762274] [2024-09-13 06:26:09,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386762274] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:26:09,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:26:09,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 06:26:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784439058] [2024-09-13 06:26:09,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:26:09,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:26:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:26:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:26:09,245 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:09,326 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2024-09-13 06:26:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 06:26:09,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-09-13 06:26:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:09,328 INFO L225 Difference]: With dead ends: 64 [2024-09-13 06:26:09,329 INFO L226 Difference]: Without dead ends: 64 [2024-09-13 06:26:09,329 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-13 06:26:09,331 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:09,332 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 136 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:26:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-13 06:26:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2024-09-13 06:26:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 37 states have internal predecessors, (45), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-13 06:26:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-09-13 06:26:09,339 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 13 [2024-09-13 06:26:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:09,339 INFO L474 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-09-13 06:26:09,339 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-09-13 06:26:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-13 06:26:09,340 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:09,340 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:09,340 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 06:26:09,340 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:09,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 815752847, now seen corresponding path program 1 times [2024-09-13 06:26:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802023284] [2024-09-13 06:26:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802023284] [2024-09-13 06:26:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802023284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:26:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640683813] [2024-09-13 06:26:09,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:09,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:26:09,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:26:09,449 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:26:09,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 06:26:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:09,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 06:26:09,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:26:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:09,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:26:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:09,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640683813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:26:09,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:26:09,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-09-13 06:26:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82052072] [2024-09-13 06:26:09,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:26:09,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-09-13 06:26:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-09-13 06:26:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-09-13 06:26:09,618 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:09,730 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-09-13 06:26:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 06:26:09,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-09-13 06:26:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:09,733 INFO L225 Difference]: With dead ends: 66 [2024-09-13 06:26:09,733 INFO L226 Difference]: Without dead ends: 66 [2024-09-13 06:26:09,733 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 7 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-09-13 06:26:09,733 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:09,734 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 212 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:26:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-09-13 06:26:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-09-13 06:26:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 43 states have internal predecessors, (52), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-13 06:26:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-09-13 06:26:09,746 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 14 [2024-09-13 06:26:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:09,747 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-09-13 06:26:09,747 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 5 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-09-13 06:26:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 06:26:09,747 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:09,747 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:09,763 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 06:26:09,948 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:26:09,948 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:09,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:09,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1887144096, now seen corresponding path program 1 times [2024-09-13 06:26:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:09,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591543194] [2024-09-13 06:26:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:10,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:10,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591543194] [2024-09-13 06:26:10,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591543194] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:26:10,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001455487] [2024-09-13 06:26:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:26:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:26:10,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:26:10,167 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 06:26:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:10,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 06:26:10,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:26:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:10,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:26:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:10,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001455487] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:26:10,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:26:10,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 26 [2024-09-13 06:26:10,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599555621] [2024-09-13 06:26:10,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:26:10,645 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-09-13 06:26:10,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-09-13 06:26:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-09-13 06:26:10,647 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 28 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:11,160 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2024-09-13 06:26:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 06:26:11,161 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-09-13 06:26:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:11,162 INFO L225 Difference]: With dead ends: 70 [2024-09-13 06:26:11,162 INFO L226 Difference]: Without dead ends: 70 [2024-09-13 06:26:11,162 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2024-09-13 06:26:11,165 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 95 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:11,166 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 155 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 06:26:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-13 06:26:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2024-09-13 06:26:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 40 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 06:26:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-09-13 06:26:11,179 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 18 [2024-09-13 06:26:11,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:11,179 INFO L474 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-09-13 06:26:11,179 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-09-13 06:26:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-13 06:26:11,179 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:11,180 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 06:26:11,207 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 06:26:11,380 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 06:26:11,380 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:11,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:11,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1124616316, now seen corresponding path program 2 times [2024-09-13 06:26:11,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:11,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671700413] [2024-09-13 06:26:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:11,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:11,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671700413] [2024-09-13 06:26:11,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671700413] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:26:11,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:26:11,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-09-13 06:26:11,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202207390] [2024-09-13 06:26:11,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:26:11,492 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 06:26:11,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:11,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 06:26:11,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-09-13 06:26:11,493 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 7 states have internal predecessors, (17), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:11,600 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-13 06:26:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 06:26:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 7 states have internal predecessors, (17), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-09-13 06:26:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:11,601 INFO L225 Difference]: With dead ends: 31 [2024-09-13 06:26:11,601 INFO L226 Difference]: Without dead ends: 31 [2024-09-13 06:26:11,603 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-09-13 06:26:11,604 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 24 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:11,605 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 56 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:26:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-13 06:26:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-13 06:26:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:26:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-09-13 06:26:11,610 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2024-09-13 06:26:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:11,610 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-09-13 06:26:11,610 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 7 states have internal predecessors, (17), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:26:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-09-13 06:26:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 06:26:11,611 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:11,612 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:11,612 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 06:26:11,612 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:11,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:11,613 INFO L85 PathProgramCache]: Analyzing trace with hash 801803528, now seen corresponding path program 1 times [2024-09-13 06:26:11,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:11,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386996941] [2024-09-13 06:26:11,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:11,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:11,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:26:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 06:26:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:11,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386996941] [2024-09-13 06:26:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386996941] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:26:11,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:26:11,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 06:26:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069935053] [2024-09-13 06:26:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:26:11,703 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 06:26:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 06:26:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:26:11,704 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:26:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:11,767 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2024-09-13 06:26:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:26:11,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-09-13 06:26:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:11,771 INFO L225 Difference]: With dead ends: 34 [2024-09-13 06:26:11,771 INFO L226 Difference]: Without dead ends: 32 [2024-09-13 06:26:11,771 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:26:11,771 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:11,772 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:26:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-13 06:26:11,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-09-13 06:26:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:26:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2024-09-13 06:26:11,775 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 24 [2024-09-13 06:26:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:11,776 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2024-09-13 06:26:11,776 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:26:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2024-09-13 06:26:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-13 06:26:11,776 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:11,777 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:11,777 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-13 06:26:11,777 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:11,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash -305455920, now seen corresponding path program 1 times [2024-09-13 06:26:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638000219] [2024-09-13 06:26:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:11,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:26:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:26:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638000219] [2024-09-13 06:26:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638000219] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:26:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136409906] [2024-09-13 06:26:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:26:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:26:11,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:26:11,876 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 06:26:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:26:11,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-13 06:26:11,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:26:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:11,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:26:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:26:12,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136409906] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:26:12,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:26:12,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2024-09-13 06:26:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91246071] [2024-09-13 06:26:12,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:26:12,015 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-13 06:26:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:26:12,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-13 06:26:12,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-09-13 06:26:12,016 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:26:12,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:26:12,094 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2024-09-13 06:26:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-13 06:26:12,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-09-13 06:26:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:26:12,095 INFO L225 Difference]: With dead ends: 28 [2024-09-13 06:26:12,095 INFO L226 Difference]: Without dead ends: 28 [2024-09-13 06:26:12,095 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-09-13 06:26:12,096 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:26:12,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 38 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:26:12,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-13 06:26:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-13 06:26:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:26:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2024-09-13 06:26:12,099 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2024-09-13 06:26:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:26:12,099 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2024-09-13 06:26:12,099 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:26:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2024-09-13 06:26:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-13 06:26:12,100 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:26:12,100 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:12,118 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 06:26:12,300 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-13 06:26:12,301 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting fibo1Err0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, fibo2Err0ENSURES_VIOLATIONPOST_CONDITION, fibo1Err0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:26:12,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:26:12,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1486082300, now seen corresponding path program 1 times [2024-09-13 06:26:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:26:12,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195647539] [2024-09-13 06:26:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:26:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:26:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-13 06:26:12,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-13 06:26:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-13 06:26:12,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-13 06:26:12,328 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-13 06:26:12,329 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location fibo1Err0ENSURES_VIOLATIONPOST_CONDITION (2 of 3 remaining) [2024-09-13 06:26:12,330 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-09-13 06:26:12,330 INFO L785 garLoopResultBuilder]: Registering result UNKNOWN for location fibo2Err0ENSURES_VIOLATIONPOST_CONDITION (0 of 3 remaining) [2024-09-13 06:26:12,331 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-09-13 06:26:12,333 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:26:12,351 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:26:12,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:26:12 BoogieIcfgContainer [2024-09-13 06:26:12,357 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:26:12,357 INFO L158 Benchmark]: Toolchain (without parser) took 4647.81ms. Allocated memory is still 213.9MB. Free memory was 141.8MB in the beginning and 139.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 213.9MB. Free memory is still 188.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.75ms. Allocated memory is still 213.9MB. Free memory was 141.8MB in the beginning and 128.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 213.9MB. Free memory was 128.7MB in the beginning and 127.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: Boogie Preprocessor took 21.25ms. Allocated memory is still 213.9MB. Free memory was 127.2MB in the beginning and 125.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: RCFGBuilder took 280.77ms. Allocated memory is still 213.9MB. Free memory was 125.7MB in the beginning and 111.3MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 06:26:12,358 INFO L158 Benchmark]: TraceAbstraction took 4035.36ms. Allocated memory is still 213.9MB. Free memory was 110.4MB in the beginning and 139.0MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:26:12,362 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 140.5MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.16ms. Allocated memory is still 213.9MB. Free memory is still 188.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.75ms. Allocated memory is still 213.9MB. Free memory was 141.8MB in the beginning and 128.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 213.9MB. Free memory was 128.7MB in the beginning and 127.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.25ms. Allocated memory is still 213.9MB. Free memory was 127.2MB in the beginning and 125.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 280.77ms. Allocated memory is still 213.9MB. Free memory was 125.7MB in the beginning and 111.3MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4035.36ms. Allocated memory is still 213.9MB. Free memory was 110.4MB in the beginning and 139.0MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 9]: procedure postcondition can be violated procedure postcondition can be violated We found a FailurePath: [L38] int x = 4; VAL [x=4] [L39] CALL fibo1(x) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); - UnprovableResult [Line: 41]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 268 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 940 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 755 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1182 IncrementalHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 185 mSDtfsCounter, 1182 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 94 SyntacticMatches, 16 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=5, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 33 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 239 ConstructedInterpolants, 0 QuantifiedInterpolants, 748 SizeOfPredicates, 10 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 66/100 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 RESULT: Ultimate proved your program to be incorrect! [2024-09-13 06:26:12,394 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...