This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:10:53,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:10:53,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:10:53,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:10:53,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:10:53,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:10:53,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:10:53,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:10:53,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:10:53,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:10:53,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:10:53,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:10:53,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:10:53,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:10:53,336 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:10:53,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:10:53,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:10:53,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:10:53,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:10:53,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:10:53,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:10:53,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:10:53,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:10:53,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:10:53,340 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:10:53,341 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:10:53,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:10:53,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:10:53,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:10:53,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:10:53,343 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:10:53,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:10:53,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:10:53,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:10:53,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:10:53,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:10:53,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:10:53,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:10:53,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:10:53,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:10:53,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:10:53,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:10:53,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:10:53,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:10:53,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:10:53,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:10:53,716 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:10:53,716 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:10:53,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/gsv2008.yml/witness-2.1.yml [2024-09-15 20:10:53,774 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:10:53,775 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:10:53,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-lit/gsv2008.i [2024-09-15 20:10:55,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:10:55,620 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:10:55,620 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gsv2008.i [2024-09-15 20:10:55,631 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/55d7bcc3c/ad9962b5673e4cc08282c65da1815dfa/FLAG6be46763b [2024-09-15 20:10:56,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/55d7bcc3c/ad9962b5673e4cc08282c65da1815dfa [2024-09-15 20:10:56,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:10:56,002 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:10:56,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:10:56,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:10:56,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:10:56,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:53" (1/2) ... [2024-09-15 20:10:56,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338bf8d8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:10:56, skipping insertion in model container [2024-09-15 20:10:56,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:53" (1/2) ... [2024-09-15 20:10:56,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@b29ec45 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:10:56, skipping insertion in model container [2024-09-15 20:10:56,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:10:56" (2/2) ... [2024-09-15 20:10:56,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338bf8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56, skipping insertion in model container [2024-09-15 20:10:56,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:10:56" (2/2) ... [2024-09-15 20:10:56,029 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:10:56,030 INFO L1541 ArrayList]: Loop invariant at [L29-L32] ((x < 0) || (0 < y)) [2024-09-15 20:10:56,030 INFO L1541 ArrayList]: Function contract at [L17]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-15 20:10:56,051 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:10:56,191 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2024-09-15 20:10:56,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:10:56,209 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-15 20:10:56,238 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] Start Parsing Local [2024-09-15 20:10:56,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:10:56,257 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:10:56,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56 WrapperNode [2024-09-15 20:10:56,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:10:56,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:10:56,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:10:56,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:10:56,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,283 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2024-09-15 20:10:56,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:10:56,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:10:56,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:10:56,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:10:56,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,298 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-15 20:10:56,298 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,300 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:10:56,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:10:56,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:10:56,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:10:56,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (1/1) ... [2024-09-15 20:10:56,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:10:56,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:56,329 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) [2024-09-15 20:10:56,331 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 [2024-09-15 20:10:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:10:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 20:10:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:10:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:10:56,433 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:10:56,437 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:10:56,560 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-15 20:10:56,560 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:10:56,589 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:10:56,590 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:10:56,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:10:56 BoogieIcfgContainer [2024-09-15 20:10:56,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:10:56,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:10:56,594 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:10:56,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:10:56,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:53" (1/4) ... [2024-09-15 20:10:56,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5290f82f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:10:56, skipping insertion in model container [2024-09-15 20:10:56,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:10:56" (2/4) ... [2024-09-15 20:10:56,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5290f82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:10:56, skipping insertion in model container [2024-09-15 20:10:56,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:56" (3/4) ... [2024-09-15 20:10:56,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5290f82f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:10:56, skipping insertion in model container [2024-09-15 20:10:56,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:10:56" (4/4) ... [2024-09-15 20:10:56,602 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2024-09-15 20:10:56,628 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:10:56,628 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-09-15 20:10:56,676 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:10:56,683 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;@4173cbc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:10:56,683 INFO L337 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-09-15 20:10:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 states have internal predecessors, (18), 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) [2024-09-15 20:10:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-09-15 20:10:56,692 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:56,692 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-09-15 20:10:56,693 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:56,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash 68457, now seen corresponding path program 1 times [2024-09-15 20:10:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:56,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082280634] [2024-09-15 20:10:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:56,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082280634] [2024-09-15 20:10:56,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082280634] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:56,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:56,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-15 20:10:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695136393] [2024-09-15 20:10:56,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:56,893 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:10:56,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:56,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:10:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:56,918 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.8) internal successors, (18), 14 states have internal predecessors, (18), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-09-15 20:10:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:56,947 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2024-09-15 20:10:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:10:56,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2024-09-15 20:10:56,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:56,957 INFO L225 Difference]: With dead ends: 18 [2024-09-15 20:10:56,957 INFO L226 Difference]: Without dead ends: 15 [2024-09-15 20:10:56,959 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:56,962 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:56,963 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-15 20:10:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-09-15 20:10:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 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) [2024-09-15 20:10:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-09-15 20:10:56,988 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2024-09-15 20:10:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:56,988 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-09-15 20:10:56,988 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-09-15 20:10:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-09-15 20:10:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:10:56,989 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:56,989 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:10:56,989 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:10:56,989 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:56,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 65788705, now seen corresponding path program 1 times [2024-09-15 20:10:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13761616] [2024-09-15 20:10:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:56,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13761616] [2024-09-15 20:10:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13761616] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050548523] [2024-09-15 20:10:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:57,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:57,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:57,104 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) [2024-09-15 20:10:57,106 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:10:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:57,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-09-15 20:10:57,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:57,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050548523] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:57,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-09-15 20:10:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940908691] [2024-09-15 20:10:57,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:57,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:10:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:10:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:10:57,274 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-09-15 20:10:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:57,307 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2024-09-15 20:10:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:10:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 5 [2024-09-15 20:10:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:57,308 INFO L225 Difference]: With dead ends: 16 [2024-09-15 20:10:57,308 INFO L226 Difference]: Without dead ends: 16 [2024-09-15 20:10:57,309 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:10:57,310 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:57,311 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-15 20:10:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2024-09-15 20:10:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 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) [2024-09-15 20:10:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-09-15 20:10:57,314 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2024-09-15 20:10:57,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:57,314 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-09-15 20:10:57,314 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2024-09-15 20:10:57,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-09-15 20:10:57,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-15 20:10:57,315 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:57,315 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:57,332 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 20:10:57,519 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 [2024-09-15 20:10:57,520 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:57,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1406269551, now seen corresponding path program 1 times [2024-09-15 20:10:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048206096] [2024-09-15 20:10:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:57,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048206096] [2024-09-15 20:10:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048206096] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:57,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:10:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803431143] [2024-09-15 20:10:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:57,660 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:10:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:10:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:10:57,661 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-09-15 20:10:57,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:57,690 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-09-15 20:10:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:10:57,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) Word has length 8 [2024-09-15 20:10:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:57,692 INFO L225 Difference]: With dead ends: 12 [2024-09-15 20:10:57,692 INFO L226 Difference]: Without dead ends: 11 [2024-09-15 20:10:57,692 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:10:57,693 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:57,694 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-15 20:10:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-15 20:10:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2024-09-15 20:10:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-09-15 20:10:57,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2024-09-15 20:10:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:57,700 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-09-15 20:10:57,700 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-09-15 20:10:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-09-15 20:10:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-15 20:10:57,701 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:57,701 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:57,701 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:10:57,701 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-09-15 20:10:57,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1489657902, now seen corresponding path program 1 times [2024-09-15 20:10:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:57,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658824148] [2024-09-15 20:10:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-15 20:10:57,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:57,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658824148] [2024-09-15 20:10:57,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658824148] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:57,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:57,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 20:10:57,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500499780] [2024-09-15 20:10:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:57,847 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 20:10:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 20:10:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:10:57,851 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-09-15 20:10:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:57,884 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2024-09-15 20:10:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:10:57,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) Word has length 10 [2024-09-15 20:10:57,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:57,884 INFO L225 Difference]: With dead ends: 9 [2024-09-15 20:10:57,884 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:10:57,885 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:10:57,886 INFO L434 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:57,886 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:10:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:10:57,891 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) [2024-09-15 20:10:57,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:10:57,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2024-09-15 20:10:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:57,892 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:10:57,892 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2024-09-15 20:10:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:10:57,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:10:57,895 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-09-15 20:10:57,896 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONPRE_CONDITION (2 of 4 remaining) [2024-09-15 20:10:57,896 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-09-15 20:10:57,896 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONPOST_CONDITION (0 of 4 remaining) [2024-09-15 20:10:57,896 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:10:57,899 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-09-15 20:10:57,901 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:10:57,904 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:10:57,904 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:10:57,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:10:57 BoogieIcfgContainer [2024-09-15 20:10:57,905 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:10:57,905 INFO L158 Benchmark]: Toolchain (without parser) took 1903.35ms. Allocated memory is still 75.5MB. Free memory was 38.2MB in the beginning and 27.5MB in the end (delta: 10.8MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2024-09-15 20:10:57,906 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:10:57,906 INFO L158 Benchmark]: CDTParser took 0.85ms. Allocated memory is still 54.5MB. Free memory was 33.3MB in the beginning and 33.2MB in the end (delta: 63.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:10:57,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.73ms. Allocated memory is still 75.5MB. Free memory was 56.0MB in the beginning and 42.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 20:10:57,907 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.99ms. Allocated memory is still 75.5MB. Free memory was 42.6MB in the beginning and 40.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:10:57,907 INFO L158 Benchmark]: Boogie Preprocessor took 21.03ms. Allocated memory is still 75.5MB. Free memory was 40.9MB in the beginning and 39.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:10:57,908 INFO L158 Benchmark]: RCFGBuilder took 284.70ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 29.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-15 20:10:57,908 INFO L158 Benchmark]: TraceAbstraction took 1311.67ms. Allocated memory is still 75.5MB. Free memory was 28.4MB in the beginning and 27.5MB in the end (delta: 944.7kB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2024-09-15 20:10:57,910 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 35.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.85ms. Allocated memory is still 54.5MB. Free memory was 33.3MB in the beginning and 33.2MB in the end (delta: 63.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.73ms. Allocated memory is still 75.5MB. Free memory was 56.0MB in the beginning and 42.6MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.99ms. Allocated memory is still 75.5MB. Free memory was 42.6MB in the beginning and 40.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.03ms. Allocated memory is still 75.5MB. Free memory was 40.9MB in the beginning and 39.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.70ms. Allocated memory is still 75.5MB. Free memory was 39.3MB in the beginning and 29.1MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1311.67ms. Allocated memory is still 75.5MB. Free memory was 28.4MB in the beginning and 27.5MB in the end (delta: 944.7kB). Peak memory consumption was 1.2MB. 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: 29]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 19]: 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: 17]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 51 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 22 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 106 SizeOfPredicates, 1 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/7 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:10:57,935 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...