./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_5-1.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 19:53:47,254 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 19:53:47,328 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 19:53:47,332 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 19:53:47,332 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 19:53:47,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 19:53:47,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 19:53:47,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 19:53:47,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 19:53:47,367 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 19:53:47,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 19:53:47,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 19:53:47,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 19:53:47,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 19:53:47,369 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 19:53:47,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 19:53:47,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 19:53:47,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 19:53:47,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 19:53:47,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 19:53:47,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 19:53:47,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 19:53:47,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 19:53:47,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 19:53:47,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 19:53:47,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 19:53:47,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 19:53:47,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 19:53:47,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 19:53:47,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 19:53:47,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 19:53:47,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 19:53:47,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:53:47,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 19:53:47,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 19:53:47,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 19:53:47,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 19:53:47,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 19:53:47,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 19:53:47,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 19:53:47,388 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 19:53:47,388 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 19:53:47,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2024-09-12 19:53:47,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 19:53:47,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 19:53:47,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 19:53:47,735 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 19:53:47,735 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 19:53:47,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-09-12 19:53:49,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 19:53:49,537 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 19:53:49,538 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2024-09-12 19:53:49,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/3ac1feaf0/9e8517336b104da1bda5b844d0742978/FLAG50b5d46d5 [2024-09-12 19:53:49,568 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/3ac1feaf0/9e8517336b104da1bda5b844d0742978 [2024-09-12 19:53:49,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 19:53:49,573 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 19:53:49,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 19:53:49,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 19:53:49,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 19:53:49,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d27d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49, skipping insertion in model container [2024-09-12 19:53:49,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 19:53:49,778 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_5-1.c[740,753] [2024-09-12 19:53:49,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:53:49,794 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 19:53:49,809 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_5-1.c[740,753] [2024-09-12 19:53:49,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 19:53:49,828 INFO L204 MainTranslator]: Completed translation [2024-09-12 19:53:49,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49 WrapperNode [2024-09-12 19:53:49,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 19:53:49,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 19:53:49,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 19:53:49,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 19:53:49,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,855 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 19:53:49,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 19:53:49,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 19:53:49,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 19:53:49,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 19:53:49,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,880 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-12 19:53:49,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 19:53:49,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 19:53:49,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 19:53:49,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 19:53:49,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (1/1) ... [2024-09-12 19:53:49,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 19:53:49,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:49,931 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) [2024-09-12 19:53:49,934 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 [2024-09-12 19:53:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 19:53:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 19:53:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 19:53:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 19:53:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 19:53:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 19:53:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 19:53:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 19:53:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-09-12 19:53:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-09-12 19:53:50,047 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 19:53:50,049 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 19:53:50,213 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-12 19:53:50,214 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 19:53:50,238 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 19:53:50,239 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 19:53:50,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:53:50 BoogieIcfgContainer [2024-09-12 19:53:50,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 19:53:50,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 19:53:50,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 19:53:50,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 19:53:50,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 07:53:49" (1/3) ... [2024-09-12 19:53:50,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9fbeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:53:50, skipping insertion in model container [2024-09-12 19:53:50,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 07:53:49" (2/3) ... [2024-09-12 19:53:50,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9fbeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 07:53:50, skipping insertion in model container [2024-09-12 19:53:50,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:53:50" (3/3) ... [2024-09-12 19:53:50,251 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2024-09-12 19:53:50,267 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 19:53:50,267 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-09-12 19:53:50,318 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 19:53:50,327 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=All, 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;@523be70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 19:53:50,327 INFO L337 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-09-12 19:53:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-12 19:53:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-12 19:53:50,339 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:50,339 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:50,340 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:50,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash -864020739, now seen corresponding path program 1 times [2024-09-12 19:53:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:50,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782653164] [2024-09-12 19:53:50,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:50,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:50,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782653164] [2024-09-12 19:53:50,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782653164] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:50,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:50,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-12 19:53:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920637822] [2024-09-12 19:53:50,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:50,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-12 19:53:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-12 19:53:50,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:53:50,610 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:50,682 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-09-12 19:53:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-12 19:53:50,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-09-12 19:53:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:50,693 INFO L225 Difference]: With dead ends: 41 [2024-09-12 19:53:50,694 INFO L226 Difference]: Without dead ends: 31 [2024-09-12 19:53:50,698 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-12 19:53:50,704 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:50,705 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 46 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-12 19:53:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-09-12 19:53:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 19:53:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-09-12 19:53:50,755 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2024-09-12 19:53:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:50,755 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-09-12 19:53:50,756 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:50,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-09-12 19:53:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-12 19:53:50,759 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:50,760 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:50,760 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 19:53:50,761 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1014839072, now seen corresponding path program 1 times [2024-09-12 19:53:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226187346] [2024-09-12 19:53:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:50,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:50,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226187346] [2024-09-12 19:53:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226187346] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:50,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:50,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:50,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042370367] [2024-09-12 19:53:50,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:50,895 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:50,897 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:51,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:51,003 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2024-09-12 19:53:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:51,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-12 19:53:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:51,005 INFO L225 Difference]: With dead ends: 31 [2024-09-12 19:53:51,005 INFO L226 Difference]: Without dead ends: 29 [2024-09-12 19:53:51,006 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-12 19:53:51,007 INFO L434 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:51,007 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:51,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-12 19:53:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-12 19:53:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 19:53:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-09-12 19:53:51,027 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2024-09-12 19:53:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:51,028 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-09-12 19:53:51,029 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-12 19:53:51,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,029 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-09-12 19:53:51,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 19:53:51,030 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:51,030 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:51,030 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-12 19:53:51,031 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:51,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash -315097464, now seen corresponding path program 1 times [2024-09-12 19:53:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:51,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093324394] [2024-09-12 19:53:51,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:51,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093324394] [2024-09-12 19:53:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093324394] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:53:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698738763] [2024-09-12 19:53:51,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:51,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:51,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:51,209 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:51,272 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2024-09-12 19:53:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:51,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-12 19:53:51,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:51,274 INFO L225 Difference]: With dead ends: 35 [2024-09-12 19:53:51,274 INFO L226 Difference]: Without dead ends: 31 [2024-09-12 19:53:51,275 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:51,276 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:51,276 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 58 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-12 19:53:51,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-09-12 19:53:51,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 19:53:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-12 19:53:51,287 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 13 [2024-09-12 19:53:51,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:51,288 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-12 19:53:51,288 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:51,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-12 19:53:51,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-12 19:53:51,289 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:51,289 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:51,289 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-12 19:53:51,290 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:51,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash -810170875, now seen corresponding path program 1 times [2024-09-12 19:53:51,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:51,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858858782] [2024-09-12 19:53:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:51,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,351 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:51,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:51,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858858782] [2024-09-12 19:53:51,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858858782] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-12 19:53:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860510343] [2024-09-12 19:53:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:51,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:51,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:51,398 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:51,476 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-09-12 19:53:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:51,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-09-12 19:53:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:51,478 INFO L225 Difference]: With dead ends: 35 [2024-09-12 19:53:51,479 INFO L226 Difference]: Without dead ends: 31 [2024-09-12 19:53:51,479 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:51,480 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:51,482 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 54 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-12 19:53:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-09-12 19:53:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-09-12 19:53:51,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-09-12 19:53:51,497 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 14 [2024-09-12 19:53:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:51,498 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-09-12 19:53:51,498 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 19:53:51,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-09-12 19:53:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-12 19:53:51,500 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:51,500 INFO L216 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:51,500 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-12 19:53:51,500 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:51,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1974235849, now seen corresponding path program 1 times [2024-09-12 19:53:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529674172] [2024-09-12 19:53:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:51,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,623 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:53:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-12 19:53:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:53:51,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529674172] [2024-09-12 19:53:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529674172] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:51,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:51,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849430073] [2024-09-12 19:53:51,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:51,688 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:51,689 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:51,749 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2024-09-12 19:53:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:51,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-09-12 19:53:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:51,751 INFO L225 Difference]: With dead ends: 45 [2024-09-12 19:53:51,751 INFO L226 Difference]: Without dead ends: 43 [2024-09-12 19:53:51,752 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:51,755 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:51,758 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 89 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:51,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-12 19:53:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-09-12 19:53:51,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 30 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-09-12 19:53:51,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-09-12 19:53:51,779 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 32 [2024-09-12 19:53:51,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:51,780 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-09-12 19:53:51,781 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:51,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-09-12 19:53:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-12 19:53:51,782 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:51,782 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:51,782 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-12 19:53:51,783 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:51,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:51,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1243737298, now seen corresponding path program 1 times [2024-09-12 19:53:51,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774712840] [2024-09-12 19:53:51,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:51,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:53:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-12 19:53:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-09-12 19:53:51,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774712840] [2024-09-12 19:53:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774712840] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519040393] [2024-09-12 19:53:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:51,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:51,921 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) [2024-09-12 19:53:51,923 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 19:53:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:51,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-12 19:53:51,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:52,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:53:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519040393] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:52,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:52,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-09-12 19:53:52,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320150357] [2024-09-12 19:53:52,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:52,214 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 19:53:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:52,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 19:53:52,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:53:52,216 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:52,640 INFO L93 Difference]: Finished difference Result 141 states and 207 transitions. [2024-09-12 19:53:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-12 19:53:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 27 [2024-09-12 19:53:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:52,643 INFO L225 Difference]: With dead ends: 141 [2024-09-12 19:53:52,644 INFO L226 Difference]: Without dead ends: 107 [2024-09-12 19:53:52,645 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-09-12 19:53:52,646 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 96 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:52,646 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 225 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-12 19:53:52,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-09-12 19:53:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2024-09-12 19:53:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 71 states have internal predecessors, (77), 13 states have call successors, (13), 5 states have call predecessors, (13), 8 states have return successors, (35), 16 states have call predecessors, (35), 12 states have call successors, (35) [2024-09-12 19:53:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 125 transitions. [2024-09-12 19:53:52,675 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 125 transitions. Word has length 27 [2024-09-12 19:53:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:52,675 INFO L474 AbstractCegarLoop]: Abstraction has 93 states and 125 transitions. [2024-09-12 19:53:52,675 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:52,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 125 transitions. [2024-09-12 19:53:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-09-12 19:53:52,677 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:52,677 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:52,695 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:52,881 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-12 19:53:52,882 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 490599858, now seen corresponding path program 2 times [2024-09-12 19:53:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:52,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045296700] [2024-09-12 19:53:52,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:53:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:52,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 19:53:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:53:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045296700] [2024-09-12 19:53:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045296700] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728263026] [2024-09-12 19:53:53,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:53,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:53,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:53,024 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) [2024-09-12 19:53:53,025 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 19:53:53,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:53,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:53,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:53:53,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:53:53,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-12 19:53:53,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728263026] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:53,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-12 19:53:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-09-12 19:53:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343642746] [2024-09-12 19:53:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:53,112 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:53,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:53,113 INFO L87 Difference]: Start difference. First operand 93 states and 125 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:53,181 INFO L93 Difference]: Finished difference Result 113 states and 154 transitions. [2024-09-12 19:53:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-09-12 19:53:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:53,184 INFO L225 Difference]: With dead ends: 113 [2024-09-12 19:53:53,184 INFO L226 Difference]: Without dead ends: 112 [2024-09-12 19:53:53,185 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-12 19:53:53,185 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:53,186 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-09-12 19:53:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2024-09-12 19:53:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 75 states have internal predecessors, (82), 13 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (42), 18 states have call predecessors, (42), 12 states have call successors, (42) [2024-09-12 19:53:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2024-09-12 19:53:53,213 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 33 [2024-09-12 19:53:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:53,214 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2024-09-12 19:53:53,214 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:53,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2024-09-12 19:53:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-09-12 19:53:53,215 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:53,216 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:53,232 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 19:53:53,416 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-12 19:53:53,417 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:53,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1971273513, now seen corresponding path program 1 times [2024-09-12 19:53:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:53,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654748957] [2024-09-12 19:53:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:53,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:53,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:53,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:53:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:53,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-09-12 19:53:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:53:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654748957] [2024-09-12 19:53:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654748957] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033172436] [2024-09-12 19:53:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:53,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:53,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:53,554 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) [2024-09-12 19:53:53,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 19:53:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:53,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 19:53:53,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 19:53:53,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 19:53:53,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033172436] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:53,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:53,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 17 [2024-09-12 19:53:53,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209478132] [2024-09-12 19:53:53,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:53,873 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 19:53:53,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:53,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 19:53:53,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:53:53,874 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:54,603 INFO L93 Difference]: Finished difference Result 291 states and 443 transitions. [2024-09-12 19:53:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-12 19:53:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) Word has length 34 [2024-09-12 19:53:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:54,606 INFO L225 Difference]: With dead ends: 291 [2024-09-12 19:53:54,607 INFO L226 Difference]: Without dead ends: 204 [2024-09-12 19:53:54,609 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2024-09-12 19:53:54,609 INFO L434 NwaCegarLoop]: 48 mSDtfsCounter, 112 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:54,610 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 344 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-12 19:53:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-09-12 19:53:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 172. [2024-09-12 19:53:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 133 states have (on average 1.0902255639097744) internal successors, (145), 131 states have internal predecessors, (145), 22 states have call successors, (22), 7 states have call predecessors, (22), 14 states have return successors, (92), 33 states have call predecessors, (92), 21 states have call successors, (92) [2024-09-12 19:53:54,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 259 transitions. [2024-09-12 19:53:54,665 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 259 transitions. Word has length 34 [2024-09-12 19:53:54,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:54,666 INFO L474 AbstractCegarLoop]: Abstraction has 172 states and 259 transitions. [2024-09-12 19:53:54,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 14 states have internal predecessors, (52), 8 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2024-09-12 19:53:54,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 259 transitions. [2024-09-12 19:53:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-12 19:53:54,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:54,670 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:54,688 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:54,870 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-12 19:53:54,871 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:54,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash -440110402, now seen corresponding path program 1 times [2024-09-12 19:53:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:54,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820506942] [2024-09-12 19:53:54,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:54,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:54,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:54,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-12 19:53:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:54,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-09-12 19:53:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-09-12 19:53:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820506942] [2024-09-12 19:53:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820506942] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 19:53:54,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 19:53:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-12 19:53:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413466558] [2024-09-12 19:53:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 19:53:54,970 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-12 19:53:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-12 19:53:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:54,971 INFO L87 Difference]: Start difference. First operand 172 states and 259 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:55,050 INFO L93 Difference]: Finished difference Result 186 states and 281 transitions. [2024-09-12 19:53:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-12 19:53:55,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2024-09-12 19:53:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:55,053 INFO L225 Difference]: With dead ends: 186 [2024-09-12 19:53:55,053 INFO L226 Difference]: Without dead ends: 185 [2024-09-12 19:53:55,054 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-12 19:53:55,054 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:55,055 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-09-12 19:53:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 179. [2024-09-12 19:53:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.0863309352517985) internal successors, (151), 136 states have internal predecessors, (151), 23 states have call successors, (23), 7 states have call predecessors, (23), 14 states have return successors, (98), 35 states have call predecessors, (98), 22 states have call successors, (98) [2024-09-12 19:53:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 272 transitions. [2024-09-12 19:53:55,116 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 272 transitions. Word has length 53 [2024-09-12 19:53:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:55,117 INFO L474 AbstractCegarLoop]: Abstraction has 179 states and 272 transitions. [2024-09-12 19:53:55,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-12 19:53:55,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 272 transitions. [2024-09-12 19:53:55,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 19:53:55,120 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:55,120 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:55,120 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-12 19:53:55,120 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash -86892787, now seen corresponding path program 1 times [2024-09-12 19:53:55,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:55,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907408524] [2024-09-12 19:53:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:55,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-12 19:53:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 19:53:55,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:55,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907408524] [2024-09-12 19:53:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907408524] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:55,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804043456] [2024-09-12 19:53:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:55,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:55,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:55,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:55,222 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 19:53:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:55,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 19:53:55,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 60 proven. 44 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-09-12 19:53:55,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-09-12 19:53:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804043456] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:55,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2024-09-12 19:53:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569839985] [2024-09-12 19:53:55,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:55,625 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-12 19:53:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-12 19:53:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:53:55,627 INFO L87 Difference]: Start difference. First operand 179 states and 272 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 13 states have internal predecessors, (62), 8 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 19:53:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:56,007 INFO L93 Difference]: Finished difference Result 381 states and 594 transitions. [2024-09-12 19:53:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-12 19:53:56,007 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 13 states have internal predecessors, (62), 8 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 65 [2024-09-12 19:53:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:56,010 INFO L225 Difference]: With dead ends: 381 [2024-09-12 19:53:56,010 INFO L226 Difference]: Without dead ends: 230 [2024-09-12 19:53:56,012 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-09-12 19:53:56,013 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 188 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:56,013 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 233 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-09-12 19:53:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 202. [2024-09-12 19:53:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 157 states have (on average 1.089171974522293) internal successors, (171), 154 states have internal predecessors, (171), 26 states have call successors, (26), 8 states have call predecessors, (26), 16 states have return successors, (103), 39 states have call predecessors, (103), 25 states have call successors, (103) [2024-09-12 19:53:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 300 transitions. [2024-09-12 19:53:56,074 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 300 transitions. Word has length 65 [2024-09-12 19:53:56,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:56,075 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 300 transitions. [2024-09-12 19:53:56,075 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 13 states have internal predecessors, (62), 8 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 19:53:56,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 300 transitions. [2024-09-12 19:53:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-09-12 19:53:56,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:56,078 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:56,095 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 19:53:56,281 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:56,282 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:56,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:56,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2100598491, now seen corresponding path program 2 times [2024-09-12 19:53:56,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:56,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890300204] [2024-09-12 19:53:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:56,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:56,333 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:56,336 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:56,348 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 19:53:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:56,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:56,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 19:53:56,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890300204] [2024-09-12 19:53:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890300204] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:56,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956014715] [2024-09-12 19:53:56,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:56,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:56,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:56,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:56,369 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-12 19:53:56,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:56,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:56,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-12 19:53:56,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 19:53:56,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-09-12 19:53:56,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956014715] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:56,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:56,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-09-12 19:53:56,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130591563] [2024-09-12 19:53:56,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:56,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-12 19:53:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-12 19:53:56,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-09-12 19:53:56,525 INFO L87 Difference]: Start difference. First operand 202 states and 300 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 19:53:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:56,634 INFO L93 Difference]: Finished difference Result 223 states and 325 transitions. [2024-09-12 19:53:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 19:53:56,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 65 [2024-09-12 19:53:56,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:56,637 INFO L225 Difference]: With dead ends: 223 [2024-09-12 19:53:56,638 INFO L226 Difference]: Without dead ends: 222 [2024-09-12 19:53:56,638 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-09-12 19:53:56,639 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:56,640 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 147 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:53:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-09-12 19:53:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 202. [2024-09-12 19:53:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 157 states have (on average 1.089171974522293) internal successors, (171), 154 states have internal predecessors, (171), 26 states have call successors, (26), 8 states have call predecessors, (26), 16 states have return successors, (103), 39 states have call predecessors, (103), 25 states have call successors, (103) [2024-09-12 19:53:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 300 transitions. [2024-09-12 19:53:56,680 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 300 transitions. Word has length 65 [2024-09-12 19:53:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:56,680 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 300 transitions. [2024-09-12 19:53:56,681 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 4 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-09-12 19:53:56,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 300 transitions. [2024-09-12 19:53:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-09-12 19:53:56,682 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:56,685 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:56,701 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-12 19:53:56,885 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-12 19:53:56,886 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:56,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:56,886 INFO L85 PathProgramCache]: Analyzing trace with hash 694043854, now seen corresponding path program 1 times [2024-09-12 19:53:56,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:56,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731586567] [2024-09-12 19:53:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:56,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-12 19:53:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-09-12 19:53:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-12 19:53:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-09-12 19:53:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731586567] [2024-09-12 19:53:57,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731586567] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159390146] [2024-09-12 19:53:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:57,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:57,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:57,126 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-12 19:53:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:57,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-12 19:53:57,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 47 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:53:57,257 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 47 proven. 63 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-12 19:53:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159390146] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:57,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 18 [2024-09-12 19:53:57,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360500358] [2024-09-12 19:53:57,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:57,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-12 19:53:57,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:57,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-12 19:53:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-09-12 19:53:57,412 INFO L87 Difference]: Start difference. First operand 202 states and 300 transitions. Second operand has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 9 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 19:53:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:57,766 INFO L93 Difference]: Finished difference Result 293 states and 437 transitions. [2024-09-12 19:53:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-12 19:53:57,768 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 9 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 66 [2024-09-12 19:53:57,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:57,770 INFO L225 Difference]: With dead ends: 293 [2024-09-12 19:53:57,770 INFO L226 Difference]: Without dead ends: 103 [2024-09-12 19:53:57,773 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 135 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2024-09-12 19:53:57,774 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 243 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:57,774 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 144 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 19:53:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-12 19:53:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2024-09-12 19:53:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 75 states have internal predecessors, (81), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 19:53:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2024-09-12 19:53:57,799 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 66 [2024-09-12 19:53:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:57,799 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2024-09-12 19:53:57,799 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 14 states have internal predecessors, (59), 9 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2024-09-12 19:53:57,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2024-09-12 19:53:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-09-12 19:53:57,800 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:57,801 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:57,817 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-09-12 19:53:58,005 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-09-12 19:53:58,006 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:58,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash 105562606, now seen corresponding path program 2 times [2024-09-12 19:53:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:58,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791058799] [2024-09-12 19:53:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:58,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-12 19:53:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,110 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-12 19:53:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-12 19:53:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791058799] [2024-09-12 19:53:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791058799] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629101608] [2024-09-12 19:53:58,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 19:53:58,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:58,141 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:58,143 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-12 19:53:58,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 19:53:58,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:58,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-12 19:53:58,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-12 19:53:58,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-09-12 19:53:58,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629101608] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:58,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2024-09-12 19:53:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871822249] [2024-09-12 19:53:58,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:58,428 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-12 19:53:58,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-12 19:53:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-09-12 19:53:58,429 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 19:53:58,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:58,536 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2024-09-12 19:53:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 19:53:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 60 [2024-09-12 19:53:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:58,539 INFO L225 Difference]: With dead ends: 99 [2024-09-12 19:53:58,539 INFO L226 Difference]: Without dead ends: 98 [2024-09-12 19:53:58,540 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:53:58,540 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:58,541 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 211 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:58,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-12 19:53:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-09-12 19:53:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.054054054054054) internal successors, (78), 75 states have internal predecessors, (78), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 19:53:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-09-12 19:53:58,557 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 60 [2024-09-12 19:53:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:58,557 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-09-12 19:53:58,558 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 19:53:58,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-09-12 19:53:58,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-09-12 19:53:58,559 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:58,559 INFO L216 NwaCegarLoop]: trace histogram [10, 8, 8, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:58,577 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-12 19:53:58,763 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:58,764 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:58,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash -76861670, now seen corresponding path program 3 times [2024-09-12 19:53:58,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:58,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32267312] [2024-09-12 19:53:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-12 19:53:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:58,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:53:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:59,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-12 19:53:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:59,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:53:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:59,032 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:53:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:59,041 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-09-12 19:53:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:53:59,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32267312] [2024-09-12 19:53:59,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32267312] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:53:59,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442055855] [2024-09-12 19:53:59,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:53:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:53:59,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:53:59,046 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-12 19:53:59,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-09-12 19:53:59,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:53:59,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-12 19:53:59,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:53:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-12 19:53:59,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:53:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-09-12 19:53:59,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442055855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:53:59,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:53:59,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2024-09-12 19:53:59,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484330180] [2024-09-12 19:53:59,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:53:59,342 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-12 19:53:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:53:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-12 19:53:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-09-12 19:53:59,343 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-12 19:53:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:53:59,441 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-09-12 19:53:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-12 19:53:59,441 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) Word has length 92 [2024-09-12 19:53:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:53:59,443 INFO L225 Difference]: With dead ends: 98 [2024-09-12 19:53:59,443 INFO L226 Difference]: Without dead ends: 97 [2024-09-12 19:53:59,444 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-09-12 19:53:59,444 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:53:59,445 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 183 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:53:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-09-12 19:53:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-09-12 19:53:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 19:53:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2024-09-12 19:53:59,461 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 92 [2024-09-12 19:53:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:53:59,462 INFO L474 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2024-09-12 19:53:59,462 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 5 states have call successors, (9), 1 states have call predecessors, (9), 4 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-09-12 19:53:59,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2024-09-12 19:53:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-09-12 19:53:59,466 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:53:59,466 INFO L216 NwaCegarLoop]: trace histogram [15, 14, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:53:59,483 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-12 19:53:59,667 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:53:59,667 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:53:59,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:53:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1443943505, now seen corresponding path program 3 times [2024-09-12 19:53:59,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:53:59,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334860097] [2024-09-12 19:53:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:53:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:53:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:59,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:53:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:53:59,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-12 19:53:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,152 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-09-12 19:54:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,213 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,230 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-09-12 19:54:00,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334860097] [2024-09-12 19:54:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334860097] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465514963] [2024-09-12 19:54:00,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 19:54:00,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:00,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:00,254 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-12 19:54:00,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-12 19:54:00,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 19:54:00,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-09-12 19:54:00,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-09-12 19:54:00,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-09-12 19:54:01,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465514963] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:01,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:01,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2024-09-12 19:54:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277006620] [2024-09-12 19:54:01,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:01,678 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-12 19:54:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-12 19:54:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:54:01,681 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (19), 19 states have call predecessors, (19), 7 states have call successors, (19) [2024-09-12 19:54:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:01,744 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2024-09-12 19:54:01,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-12 19:54:01,744 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (19), 19 states have call predecessors, (19), 7 states have call successors, (19) Word has length 146 [2024-09-12 19:54:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:01,746 INFO L225 Difference]: With dead ends: 97 [2024-09-12 19:54:01,746 INFO L226 Difference]: Without dead ends: 96 [2024-09-12 19:54:01,746 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 309 SyntacticMatches, 16 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-09-12 19:54:01,747 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:01,747 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-12 19:54:01,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-09-12 19:54:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-09-12 19:54:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.0135135135135136) internal successors, (75), 73 states have internal predecessors, (75), 13 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-12 19:54:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2024-09-12 19:54:01,768 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 146 [2024-09-12 19:54:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:01,769 INFO L474 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2024-09-12 19:54:01,769 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (19), 19 states have call predecessors, (19), 7 states have call successors, (19) [2024-09-12 19:54:01,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:01,769 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2024-09-12 19:54:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-09-12 19:54:01,771 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 19:54:01,771 INFO L216 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:01,789 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-12 19:54:01,974 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-09-12 19:54:01,975 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-09-12 19:54:01,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1170468657, now seen corresponding path program 1 times [2024-09-12 19:54:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 19:54:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960939949] [2024-09-12 19:54:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:01,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 19:54:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 19:54:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-12 19:54:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-09-12 19:54:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 19:54:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-09-12 19:54:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,902 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-12 19:54:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-09-12 19:54:02,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 19:54:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960939949] [2024-09-12 19:54:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960939949] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 19:54:02,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033804739] [2024-09-12 19:54:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 19:54:02,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 19:54:02,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 19:54:02,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-12 19:54:02,915 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-12 19:54:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 19:54:02,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-09-12 19:54:02,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 19:54:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-09-12 19:54:03,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 19:54:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2024-09-12 19:54:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033804739] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 19:54:03,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 19:54:03,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-09-12 19:54:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337978620] [2024-09-12 19:54:03,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 19:54:03,655 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-12 19:54:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 19:54:03,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-12 19:54:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-09-12 19:54:03,656 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-12 19:54:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 19:54:03,806 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2024-09-12 19:54:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 19:54:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) Word has length 151 [2024-09-12 19:54:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 19:54:03,808 INFO L225 Difference]: With dead ends: 96 [2024-09-12 19:54:03,808 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 19:54:03,809 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-09-12 19:54:03,809 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 19:54:03,809 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 19:54:03,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 19:54:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 19:54:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-12 19:54:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 19:54:03,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2024-09-12 19:54:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 19:54:03,815 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 19:54:03,815 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 19 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2024-09-12 19:54:03,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 19:54:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 19:54:03,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 19:54:03,818 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-09-12 19:54:03,818 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fiboErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2024-09-12 19:54:03,819 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fiboErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 7 remaining) [2024-09-12 19:54:03,819 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fiboErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2024-09-12 19:54:03,819 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fiboErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2024-09-12 19:54:03,819 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fiboErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2024-09-12 19:54:03,819 INFO L785 garLoopResultBuilder]: Registering result SAFE for location fiboErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2024-09-12 19:54:03,831 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-12 19:54:04,019 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-09-12 19:54:04,022 INFO L408 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 19:54:04,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 19:54:06,085 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 19:54:06,110 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-09-12 19:54:06,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 07:54:06 BoogieIcfgContainer [2024-09-12 19:54:06,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 19:54:06,113 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 19:54:06,113 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 19:54:06,113 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 19:54:06,114 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 07:53:50" (3/4) ... [2024-09-12 19:54:06,116 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 19:54:06,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 19:54:06,120 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 19:54:06,120 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2024-09-12 19:54:06,123 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-12 19:54:06,124 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-12 19:54:06,124 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 19:54:06,124 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 19:54:06,225 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 19:54:06,226 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 19:54:06,226 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 19:54:06,226 INFO L158 Benchmark]: Toolchain (without parser) took 16654.03ms. Allocated memory was 65.0MB in the beginning and 207.6MB in the end (delta: 142.6MB). Free memory was 32.3MB in the beginning and 182.6MB in the end (delta: -150.2MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,227 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 52.4MB. Free memory is still 27.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 19:54:06,227 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.47ms. Allocated memory is still 65.0MB. Free memory was 32.2MB in the beginning and 37.3MB in the end (delta: -5.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.93ms. Allocated memory is still 65.0MB. Free memory was 37.2MB in the beginning and 36.3MB in the end (delta: 907.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,228 INFO L158 Benchmark]: Boogie Preprocessor took 38.71ms. Allocated memory is still 65.0MB. Free memory was 36.1MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,228 INFO L158 Benchmark]: RCFGBuilder took 344.15ms. Allocated memory is still 65.0MB. Free memory was 34.5MB in the beginning and 38.3MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,229 INFO L158 Benchmark]: TraceAbstraction took 15870.33ms. Allocated memory was 65.0MB in the beginning and 207.6MB in the end (delta: 142.6MB). Free memory was 37.7MB in the beginning and 65.3MB in the end (delta: -27.6MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,229 INFO L158 Benchmark]: Witness Printer took 112.94ms. Allocated memory is still 207.6MB. Free memory was 65.3MB in the beginning and 182.6MB in the end (delta: -117.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2024-09-12 19:54:06,233 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 52.4MB. Free memory is still 27.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.47ms. Allocated memory is still 65.0MB. Free memory was 32.2MB in the beginning and 37.3MB in the end (delta: -5.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.93ms. Allocated memory is still 65.0MB. Free memory was 37.2MB in the beginning and 36.3MB in the end (delta: 907.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.71ms. Allocated memory is still 65.0MB. Free memory was 36.1MB in the beginning and 34.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 344.15ms. Allocated memory is still 65.0MB. Free memory was 34.5MB in the beginning and 38.3MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15870.33ms. Allocated memory was 65.0MB in the beginning and 207.6MB in the end (delta: 142.6MB). Free memory was 37.7MB in the beginning and 65.3MB in the end (delta: -27.6MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. * Witness Printer took 112.94ms. Allocated memory is still 207.6MB. Free memory was 65.3MB in the beginning and 182.6MB in the end (delta: -117.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 29]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 16, TraceHistogramMax: 15, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 768 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 730 mSDsluCounter, 2765 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2305 mSDsCounter, 179 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2659 IncrementalHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 179 mSolverCounterUnsat, 460 mSDtfsCounter, 2659 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1812 GetRequests, 1561 SyntacticMatches, 47 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=10, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 129 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1611 NumberOfCodeBlocks, 1566 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2282 ConstructedInterpolants, 0 QuantifiedInterpolants, 4781 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1497 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 4876/6471 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - ProcedureContractResult [Line: 7]: Procedure Contract for fibo Derived contract for procedure fibo. Requires: (\old(n) <= 5) Ensures: (\old(n) <= 5) RESULT: Ultimate proved your program to be correct! [2024-09-12 19:54:06,262 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE