This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:28:09,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:28:09,853 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:28:09,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:28:09,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:28:09,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:28:09,880 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:28:09,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:28:09,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:28:09,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:28:09,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:28:09,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:28:09,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:28:09,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:28:09,882 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:28:09,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:28:09,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:28:09,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:28:09,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:28:09,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:28:09,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:28:09,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:28:09,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:28:09,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:28:09,887 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:28:09,887 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:28:09,887 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:28:09,887 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:28:09,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:28:09,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:28:09,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:28:09,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:28:09,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:28:09,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:28:09,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:28:09,891 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:28:09,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:28:09,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:28:09,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:28:09,892 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:28:09,892 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:28:09,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:28:09,892 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:28:10,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:28:10,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:28:10,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:28:10,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:28:10,142 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:28:10,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-13 10:28:11,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:28:11,659 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:28:11,659 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2024-09-13 10:28:11,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/a8eac7c79/f1d50d50aa7845f69fac6c9798c72ea7/FLAG7f9c0ee6a [2024-09-13 10:28:12,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/a8eac7c79/f1d50d50aa7845f69fac6c9798c72ea7 [2024-09-13 10:28:12,044 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:28:12,045 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:28:12,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_20x0-2.yml/witness-2.1.yml [2024-09-13 10:28:12,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:28:12,083 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:28:12,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:28:12,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:28:12,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:28:12,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:28:12" (1/2) ... [2024-09-13 10:28:12,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c9bccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:28:12, skipping insertion in model container [2024-09-13 10:28:12,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:28:12" (1/2) ... [2024-09-13 10:28:12,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a9ff421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:28:12, skipping insertion in model container [2024-09-13 10:28:12,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:12" (2/2) ... [2024-09-13 10:28:12,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c9bccc and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12, skipping insertion in model container [2024-09-13 10:28:12,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:12" (2/2) ... [2024-09-13 10:28:12,095 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:28:12,096 INFO L1541 ArrayList]: Function contract at [L5]: requires null, ensures (\result == (\old(n) + \old(m))) [2024-09-13 10:28:12,108 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:28:12,221 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/sum_20x0-2.c[481,494] [2024-09-13 10:28:12,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:28:12,236 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-13 10:28:12,263 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/sum_20x0-2.c[481,494] [2024-09-13 10:28:12,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:28:12,275 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:28:12,275 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12 WrapperNode [2024-09-13 10:28:12,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:28:12,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:28:12,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:28:12,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:28:12,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,296 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-09-13 10:28:12,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:28:12,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:28:12,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:28:12,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:28:12,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,332 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,342 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure sum is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:28:12,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,348 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:28:12,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:28:12,355 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:28:12,355 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:28:12,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (1/1) ... [2024-09-13 10:28:12,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:28:12,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:12,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:28:12,425 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:28:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:28:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:28:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:28:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-13 10:28:12,457 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-13 10:28:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:28:12,505 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:28:12,506 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:28:12,594 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-13 10:28:12,594 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:28:12,609 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:28:12,609 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:28:12,609 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:12 BoogieIcfgContainer [2024-09-13 10:28:12,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:28:12,611 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:28:12,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:28:12,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:28:12,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:28:12" (1/4) ... [2024-09-13 10:28:12,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546b4abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:28:12, skipping insertion in model container [2024-09-13 10:28:12,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:28:12" (2/4) ... [2024-09-13 10:28:12,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546b4abc and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:12, skipping insertion in model container [2024-09-13 10:28:12,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:28:12" (3/4) ... [2024-09-13 10:28:12,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@546b4abc and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:12, skipping insertion in model container [2024-09-13 10:28:12,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:12" (4/4) ... [2024-09-13 10:28:12,615 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2024-09-13 10:28:12,627 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:28:12,627 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-13 10:28:12,655 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:28:12,660 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@559ce364, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:28:12,660 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-13 10:28:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:28:12,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:12,667 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:28:12,668 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-13 10:28:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:12,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842486764] [2024-09-13 10:28:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:12,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:12,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842486764] [2024-09-13 10:28:12,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842486764] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:12,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:12,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:28:12,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651976759] [2024-09-13 10:28:12,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:12,857 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:28:12,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:12,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:28:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:28:12,881 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:12,935 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-13 10:28:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:28:12,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 10:28:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:12,942 INFO L225 Difference]: With dead ends: 22 [2024-09-13 10:28:12,942 INFO L226 Difference]: Without dead ends: 20 [2024-09-13 10:28:12,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:28:12,945 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:12,946 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:28:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-13 10:28:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-13 10:28:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-13 10:28:12,967 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-13 10:28:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:12,967 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-13 10:28:12,968 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-13 10:28:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 10:28:12,968 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:12,969 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:12,969 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:28:12,969 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:12,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-13 10:28:12,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:12,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369811285] [2024-09-13 10:28:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369811285] [2024-09-13 10:28:13,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369811285] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:13,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203552835] [2024-09-13 10:28:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:13,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:13,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:13,049 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:28:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:13,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 10:28:13,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:13,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:13,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:13,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203552835] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:13,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:13,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-13 10:28:13,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605854233] [2024-09-13 10:28:13,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:13,171 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 10:28:13,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:13,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 10:28:13,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-13 10:28:13,172 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:13,298 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-09-13 10:28:13,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 10:28:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 10:28:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:13,301 INFO L225 Difference]: With dead ends: 44 [2024-09-13 10:28:13,301 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 10:28:13,301 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-13 10:28:13,302 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:13,303 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:13,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 10:28:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-13 10:28:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 10:28:13,308 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-13 10:28:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:13,308 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 10:28:13,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 10:28:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 10:28:13,309 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:13,309 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-13 10:28:13,323 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:28:13,513 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:13,514 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:13,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-13 10:28:13,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:13,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743384014] [2024-09-13 10:28:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:13,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743384014] [2024-09-13 10:28:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743384014] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574454026] [2024-09-13 10:28:13,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:13,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:13,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:13,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:13,712 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:28:13,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-13 10:28:13,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:13,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 10:28:13,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 10:28:13,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:28:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574454026] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:28:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-13 10:28:13,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596721657] [2024-09-13 10:28:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:13,779 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:28:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:13,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:28:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 10:28:13,780 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:13,813 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-13 10:28:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:28:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-13 10:28:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:13,814 INFO L225 Difference]: With dead ends: 39 [2024-09-13 10:28:13,814 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 10:28:13,815 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-13 10:28:13,815 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:13,816 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:28:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 10:28:13,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-13 10:28:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-13 10:28:13,820 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-13 10:28:13,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:13,820 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-13 10:28:13,821 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-13 10:28:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 10:28:13,821 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:13,821 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:13,834 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 10:28:14,025 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:14,026 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:14,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-13 10:28:14,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:14,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245827802] [2024-09-13 10:28:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 10:28:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:14,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245827802] [2024-09-13 10:28:14,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245827802] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:14,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636710614] [2024-09-13 10:28:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:14,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:14,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:14,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:28:14,254 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:28:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:14,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 10:28:14,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:14,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:14,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636710614] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:14,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:14,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-09-13 10:28:14,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791664146] [2024-09-13 10:28:14,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:14,529 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 10:28:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:14,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 10:28:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-09-13 10:28:14,531 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:14,806 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-13 10:28:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 10:28:14,807 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-13 10:28:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:14,808 INFO L225 Difference]: With dead ends: 71 [2024-09-13 10:28:14,809 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 10:28:14,810 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 10:28:14,811 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:14,813 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 73 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:14,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 10:28:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-13 10:28:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 10:28:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-13 10:28:14,839 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-13 10:28:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:14,839 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-13 10:28:14,839 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-13 10:28:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-13 10:28:14,845 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:14,845 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:14,861 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 10:28:15,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:15,047 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:15,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash 756088836, now seen corresponding path program 2 times [2024-09-13 10:28:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318513692] [2024-09-13 10:28:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:15,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:15,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 10:28:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318513692] [2024-09-13 10:28:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318513692] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547656517] [2024-09-13 10:28:15,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:15,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:15,333 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) [2024-09-13 10:28:15,338 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:28:15,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:28:15,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:15,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 10:28:15,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:15,474 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:15,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:15,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547656517] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:15,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 45 [2024-09-13 10:28:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245538747] [2024-09-13 10:28:15,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:15,925 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-13 10:28:15,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-13 10:28:15,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2024-09-13 10:28:15,927 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:16,714 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2024-09-13 10:28:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-09-13 10:28:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-13 10:28:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:16,716 INFO L225 Difference]: With dead ends: 141 [2024-09-13 10:28:16,716 INFO L226 Difference]: Without dead ends: 141 [2024-09-13 10:28:16,718 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2024-09-13 10:28:16,718 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 260 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:16,719 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 190 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-13 10:28:16,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-09-13 10:28:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2024-09-13 10:28:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 83 states have internal predecessors, (101), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-09-13 10:28:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2024-09-13 10:28:16,731 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 35 [2024-09-13 10:28:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:16,731 INFO L474 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2024-09-13 10:28:16,731 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 26 states have internal predecessors, (48), 20 states have call successors, (20), 19 states have call predecessors, (20), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2024-09-13 10:28:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-13 10:28:16,736 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:16,736 INFO L216 NwaCegarLoop]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:16,762 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-13 10:28:16,937 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:16,937 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:16,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1369371833, now seen corresponding path program 3 times [2024-09-13 10:28:16,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:16,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557321115] [2024-09-13 10:28:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:16,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:18,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-13 10:28:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 552 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557321115] [2024-09-13 10:28:18,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557321115] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990527513] [2024-09-13 10:28:18,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 10:28:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:18,125 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) [2024-09-13 10:28:18,127 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 10:28:18,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 10:28:18,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:18,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 10:28:18,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-09-13 10:28:18,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:28:18,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990527513] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:18,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:28:18,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [45] total 46 [2024-09-13 10:28:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800737426] [2024-09-13 10:28:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:18,243 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:28:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:28:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2024-09-13 10:28:18,245 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 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) [2024-09-13 10:28:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:18,280 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2024-09-13 10:28:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:28:18,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 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 68 [2024-09-13 10:28:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:18,282 INFO L225 Difference]: With dead ends: 122 [2024-09-13 10:28:18,282 INFO L226 Difference]: Without dead ends: 122 [2024-09-13 10:28:18,283 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2024-09-13 10:28:18,283 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:18,283 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:28:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-09-13 10:28:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-09-13 10:28:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 82 states have internal predecessors, (82), 20 states have call successors, (20), 19 states have call predecessors, (20), 20 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-09-13 10:28:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2024-09-13 10:28:18,295 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 68 [2024-09-13 10:28:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:18,295 INFO L474 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2024-09-13 10:28:18,295 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 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) [2024-09-13 10:28:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2024-09-13 10:28:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-09-13 10:28:18,297 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:18,297 INFO L216 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:18,322 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 10:28:18,497 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:28:18,498 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:18,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -949632177, now seen corresponding path program 1 times [2024-09-13 10:28:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:18,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137695078] [2024-09-13 10:28:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:18,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:19,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:19,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:19,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:19,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:19,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,473 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,621 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,689 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:20,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2024-09-13 10:28:21,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137695078] [2024-09-13 10:28:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137695078] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:21,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849903845] [2024-09-13 10:28:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:21,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:21,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:21,020 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) [2024-09-13 10:28:21,022 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-13 10:28:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:21,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-13 10:28:21,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-09-13 10:28:21,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-13 10:28:49,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849903845] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:49,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:49,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 43] total 47 [2024-09-13 10:28:49,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186009573] [2024-09-13 10:28:49,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:49,009 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-13 10:28:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-13 10:28:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2024-09-13 10:28:49,014 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) [2024-09-13 10:28:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:49,367 INFO L93 Difference]: Finished difference Result 692 states and 711 transitions. [2024-09-13 10:28:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-13 10:28:49,367 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) Word has length 123 [2024-09-13 10:28:49,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:49,371 INFO L225 Difference]: With dead ends: 692 [2024-09-13 10:28:49,371 INFO L226 Difference]: Without dead ends: 638 [2024-09-13 10:28:49,372 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 241 SyntacticMatches, 21 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1786 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1455, Invalid=3101, Unknown=0, NotChecked=0, Total=4556 [2024-09-13 10:28:49,373 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 371 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:49,373 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 78 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:28:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-09-13 10:28:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 125. [2024-09-13 10:28:49,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 84 states have internal predecessors, (84), 20 states have call successors, (20), 19 states have call predecessors, (20), 21 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2024-09-13 10:28:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2024-09-13 10:28:49,397 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 123 [2024-09-13 10:28:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:49,397 INFO L474 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2024-09-13 10:28:49,397 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 46 states have internal predecessors, (91), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (58), 20 states have call predecessors, (58), 22 states have call successors, (58) [2024-09-13 10:28:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2024-09-13 10:28:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-09-13 10:28:49,399 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:49,399 INFO L216 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:49,412 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 10:28:49,599 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:49,600 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:49,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1487103875, now seen corresponding path program 2 times [2024-09-13 10:28:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808436985] [2024-09-13 10:28:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:49,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-09-13 10:28:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808436985] [2024-09-13 10:28:49,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808436985] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:49,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:49,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 10:28:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992788142] [2024-09-13 10:28:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:49,996 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:28:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:49,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:28:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:28:49,997 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:28:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:50,010 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2024-09-13 10:28:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:28:50,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 129 [2024-09-13 10:28:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:50,012 INFO L225 Difference]: With dead ends: 123 [2024-09-13 10:28:50,012 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:28:50,012 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:28:50,013 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:50,013 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:28:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:28:50,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:28:50,014 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) [2024-09-13 10:28:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:28:50,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2024-09-13 10:28:50,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:50,015 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:28:50,015 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 10:28:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:28:50,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:28:50,017 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-13 10:28:50,017 INFO L785 garLoopResultBuilder]: Registering result SAFE for location sumErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-13 10:28:50,018 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-13 10:28:50,020 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1] [2024-09-13 10:28:50,021 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:28:50,023 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:28:50 BoogieIcfgContainer [2024-09-13 10:28:50,023 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:28:50,024 INFO L158 Benchmark]: Toolchain (without parser) took 37940.64ms. Allocated memory was 178.3MB in the beginning and 427.8MB in the end (delta: 249.6MB). Free memory was 108.1MB in the beginning and 209.3MB in the end (delta: -101.2MB). Peak memory consumption was 151.5MB. Max. memory is 16.1GB. [2024-09-13 10:28:50,024 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:28:50,025 INFO L158 Benchmark]: Witness Parser took 1.06ms. Allocated memory is still 178.3MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:28:50,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.52ms. Allocated memory is still 178.3MB. Free memory was 107.8MB in the beginning and 95.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:28:50,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.61ms. Allocated memory is still 178.3MB. Free memory was 95.2MB in the beginning and 93.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:28:50,025 INFO L158 Benchmark]: Boogie Preprocessor took 57.07ms. Allocated memory is still 178.3MB. Free memory was 93.8MB in the beginning and 149.4MB in the end (delta: -55.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-09-13 10:28:50,026 INFO L158 Benchmark]: RCFGBuilder took 254.63ms. Allocated memory is still 178.3MB. Free memory was 149.4MB in the beginning and 138.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-13 10:28:50,026 INFO L158 Benchmark]: TraceAbstraction took 37412.20ms. Allocated memory was 178.3MB in the beginning and 427.8MB in the end (delta: 249.6MB). Free memory was 137.8MB in the beginning and 209.3MB in the end (delta: -71.5MB). Peak memory consumption was 179.9MB. Max. memory is 16.1GB. [2024-09-13 10:28:50,027 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 1.06ms. Allocated memory is still 178.3MB. Free memory is still 109.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.52ms. Allocated memory is still 178.3MB. Free memory was 107.8MB in the beginning and 95.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.61ms. Allocated memory is still 178.3MB. Free memory was 95.2MB in the beginning and 93.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.07ms. Allocated memory is still 178.3MB. Free memory was 93.8MB in the beginning and 149.4MB in the end (delta: -55.6MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * RCFGBuilder took 254.63ms. Allocated memory is still 178.3MB. Free memory was 149.4MB in the beginning and 138.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 37412.20ms. Allocated memory was 178.3MB in the beginning and 427.8MB in the end (delta: 249.6MB). Free memory was 137.8MB in the beginning and 209.3MB in the end (delta: -71.5MB). Peak memory consumption was 179.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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: 5]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 37.4s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 823 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 815 mSDsluCounter, 484 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 401 mSDsCounter, 294 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1449 IncrementalHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 294 mSolverCounterUnsat, 83 mSDtfsCounter, 1449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 456 SyntacticMatches, 23 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3414 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=7, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 548 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 33.7s InterpolantComputationTime, 676 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 844 ConstructedInterpolants, 0 QuantifiedInterpolants, 2162 SizeOfPredicates, 36 NumberOfNonLiveVariables, 804 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 3688/6268 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:28:50,051 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...