This is Ultimate 0.2.4-tmp.dk.referee-eval-f1d7dc9-m [2024-09-20 13:32:46,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 13:32:46,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 13:32:46,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 13:32:46,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 13:32:46,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 13:32:46,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 13:32:46,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 13:32:46,298 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 13:32:46,299 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 13:32:46,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 13:32:46,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 13:32:46,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 13:32:46,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 13:32:46,303 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 13:32:46,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 13:32:46,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 13:32:46,304 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 13:32:46,305 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 13:32:46,305 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 13:32:46,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 13:32:46,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 13:32:46,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 13:32:46,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 13:32:46,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 13:32:46,310 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 13:32:46,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 13:32:46,311 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 13:32:46,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 13:32:46,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 13:32:46,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 13:32:46,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 13:32:46,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:32:46,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 13:32:46,312 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 13:32:46,313 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 13:32:46,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 13:32:46,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 13:32:46,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 13:32:46,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 13:32:46,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 13:32:46,316 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 13:32:46,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 13:32:46,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 13:32:46,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 13:32:46,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 13:32:46,577 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 13:32:46,578 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 13:32:46,579 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/bresenham-ll.yml/witness-2.1.yml [2024-09-20 13:32:46,638 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 13:32:46,638 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 13:32:46,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2024-09-20 13:32:48,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 13:32:48,192 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 13:32:48,192 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2024-09-20 13:32:48,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/b4b15f1e0/6a2b54946bc8445cb49635ff26e6e101/FLAG44821a6a4 [2024-09-20 13:32:48,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/b4b15f1e0/6a2b54946bc8445cb49635ff26e6e101 [2024-09-20 13:32:48,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 13:32:48,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-20 13:32:48,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 13:32:48,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 13:32:48,218 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 13:32:48,219 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:32:46" (1/2) ... [2024-09-20 13:32:48,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f27c9d and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:32:48, skipping insertion in model container [2024-09-20 13:32:48,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:32:46" (1/2) ... [2024-09-20 13:32:48,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c0f186f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 01:32:48, skipping insertion in model container [2024-09-20 13:32:48,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:32:48" (2/2) ... [2024-09-20 13:32:48,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f27c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48, skipping insertion in model container [2024-09-20 13:32:48,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:32:48" (2/2) ... [2024-09-20 13:32:48,234 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 13:32:48,234 INFO L1541 ArrayList]: Loop invariant at [L30-L45] (((Y <= 2147483647) && (0 <= (Y + 2147483648))) && ((((long long) Y * 2) + (2 * ((__int128) Y * x))) == (((((__int128) X * y) * 2) + X) + v))) [2024-09-20 13:32:48,235 INFO L1541 ArrayList]: Function contract at [L13]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-20 13:32:48,250 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 13:32:48,383 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/nla-digbench/bresenham-ll.c[597,610] [2024-09-20 13:32:48,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:32:48,407 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-20 13:32:48,448 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/nla-digbench/bresenham-ll.c[597,610] Start Parsing Local [2024-09-20 13:32:48,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 13:32:48,483 INFO L204 MainTranslator]: Completed translation [2024-09-20 13:32:48,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48 WrapperNode [2024-09-20 13:32:48,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 13:32:48,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 13:32:48,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 13:32:48,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 13:32:48,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,515 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2024-09-20 13:32:48,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 13:32:48,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 13:32:48,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 13:32:48,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 13:32:48,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,546 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-20 13:32:48,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 13:32:48,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 13:32:48,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 13:32:48,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 13:32:48,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (1/1) ... [2024-09-20 13:32:48,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 13:32:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:48,598 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) [2024-09-20 13:32:48,600 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 [2024-09-20 13:32:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 13:32:48,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-20 13:32:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 13:32:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 13:32:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 13:32:48,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 13:32:48,696 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 13:32:48,698 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 13:32:48,826 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-20 13:32:48,844 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-09-20 13:32:48,844 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 13:32:48,874 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 13:32:48,875 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 13:32:48,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:32:48 BoogieIcfgContainer [2024-09-20 13:32:48,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 13:32:48,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 13:32:48,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 13:32:48,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 13:32:48,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 01:32:46" (1/4) ... [2024-09-20 13:32:48,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258cee5b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.09 01:32:48, skipping insertion in model container [2024-09-20 13:32:48,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:32:48" (2/4) ... [2024-09-20 13:32:48,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258cee5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:32:48, skipping insertion in model container [2024-09-20 13:32:48,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:32:48" (3/4) ... [2024-09-20 13:32:48,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258cee5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:32:48, skipping insertion in model container [2024-09-20 13:32:48,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:32:48" (4/4) ... [2024-09-20 13:32:48,892 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2024-09-20 13:32:48,909 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 13:32:48,910 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-09-20 13:32:48,957 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 13:32:48,962 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;@28a0c046, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 13:32:48,963 INFO L337 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-09-20 13:32:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 17 states have internal predecessors, (22), 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) [2024-09-20 13:32:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-09-20 13:32:48,970 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:48,971 INFO L216 NwaCegarLoop]: trace histogram [1, 1] [2024-09-20 13:32:48,971 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:48,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2701, now seen corresponding path program 1 times [2024-09-20 13:32:48,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:48,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292534668] [2024-09-20 13:32:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:32:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339581739] [2024-09-20 13:32:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:49,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:49,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:49,088 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) [2024-09-20 13:32:49,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 13:32:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:49,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 13:32:49,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:32:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:32:49,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:32:49,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:49,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292534668] [2024-09-20 13:32:49,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:32:49,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339581739] [2024-09-20 13:32:49,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339581739] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:32:49,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:32:49,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-09-20 13:32:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137834429] [2024-09-20 13:32:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:49,232 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:32:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:32:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:32:49,261 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 17 states have internal predecessors, (22), 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 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-09-20 13:32:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:49,333 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2024-09-20 13:32:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:32:49,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2024-09-20 13:32:49,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:49,344 INFO L225 Difference]: With dead ends: 27 [2024-09-20 13:32:49,344 INFO L226 Difference]: Without dead ends: 25 [2024-09-20 13:32:49,346 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 [2024-09-20 13:32:49,350 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:49,351 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:32:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-20 13:32:49,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2024-09-20 13:32:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2024-09-20 13:32:49,383 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 2 [2024-09-20 13:32:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:49,384 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2024-09-20 13:32:49,384 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-09-20 13:32:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2024-09-20 13:32:49,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-09-20 13:32:49,385 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:49,385 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-09-20 13:32:49,405 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-20 13:32:49,589 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-09-20 13:32:49,590 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:49,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2597040, now seen corresponding path program 1 times [2024-09-20 13:32:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:49,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096992928] [2024-09-20 13:32:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:49,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:32:49,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:49,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096992928] [2024-09-20 13:32:49,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096992928] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:32:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:32:49,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:32:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689855541] [2024-09-20 13:32:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:49,841 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:32:49,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:32:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:32:49,843 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-09-20 13:32:49,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:49,913 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2024-09-20 13:32:49,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:32:49,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2024-09-20 13:32:49,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:49,914 INFO L225 Difference]: With dead ends: 19 [2024-09-20 13:32:49,915 INFO L226 Difference]: Without dead ends: 19 [2024-09-20 13:32:49,915 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:32:49,916 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:49,917 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:32:49,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-09-20 13:32:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-09-20 13:32:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:49,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-20 13:32:49,921 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 4 [2024-09-20 13:32:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:49,921 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-20 13:32:49,922 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-09-20 13:32:49,922 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-20 13:32:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-20 13:32:49,923 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:49,923 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:49,924 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 13:32:49,924 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:49,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:49,928 INFO L85 PathProgramCache]: Analyzing trace with hash 60136872, now seen corresponding path program 1 times [2024-09-20 13:32:49,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:49,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622644688] [2024-09-20 13:32:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:49,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:32:50,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:50,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622644688] [2024-09-20 13:32:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622644688] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:32:50,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:32:50,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:32:50,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946345998] [2024-09-20 13:32:50,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:50,062 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:32:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:32:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:32:50,064 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:32:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:50,077 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-09-20 13:32:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:32:50,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-20 13:32:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:50,079 INFO L225 Difference]: With dead ends: 17 [2024-09-20 13:32:50,079 INFO L226 Difference]: Without dead ends: 17 [2024-09-20 13:32:50,079 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:32:50,080 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:50,082 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:32:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-20 13:32:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-20 13:32:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-09-20 13:32:50,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 7 [2024-09-20 13:32:50,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:50,089 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-09-20 13:32:50,089 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:32:50,089 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-09-20 13:32:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-20 13:32:50,090 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:50,090 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:50,090 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-20 13:32:50,091 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:50,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash 60137033, now seen corresponding path program 1 times [2024-09-20 13:32:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830762206] [2024-09-20 13:32:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:50,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:32:50,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:50,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830762206] [2024-09-20 13:32:50,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830762206] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:32:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:32:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 13:32:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315002093] [2024-09-20 13:32:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:50,138 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-20 13:32:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:50,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-20 13:32:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:32:50,139 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-20 13:32:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:50,155 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-09-20 13:32:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-20 13:32:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-09-20 13:32:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:50,157 INFO L225 Difference]: With dead ends: 16 [2024-09-20 13:32:50,157 INFO L226 Difference]: Without dead ends: 16 [2024-09-20 13:32:50,158 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-20 13:32:50,159 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:50,161 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:32:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-20 13:32:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-20 13:32:50,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-09-20 13:32:50,165 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2024-09-20 13:32:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:50,166 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-09-20 13:32:50,167 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (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) [2024-09-20 13:32:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-09-20 13:32:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-20 13:32:50,168 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:50,168 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:50,168 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-20 13:32:50,168 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:50,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:50,170 INFO L85 PathProgramCache]: Analyzing trace with hash -408607480, now seen corresponding path program 1 times [2024-09-20 13:32:50,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298719635] [2024-09-20 13:32:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:32:50,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547301082] [2024-09-20 13:32:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:50,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:50,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:50,205 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) [2024-09-20 13:32:50,206 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 13:32:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:50,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 13:32:50,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:32:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:32:50,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:32:50,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:50,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298719635] [2024-09-20 13:32:50,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:32:50,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547301082] [2024-09-20 13:32:50,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547301082] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:32:50,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:32:50,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-20 13:32:50,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838518771] [2024-09-20 13:32:50,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:50,399 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:32:50,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:32:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-20 13:32:50,404 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:50,471 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-09-20 13:32:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 13:32:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-20 13:32:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:50,473 INFO L225 Difference]: With dead ends: 22 [2024-09-20 13:32:50,473 INFO L226 Difference]: Without dead ends: 20 [2024-09-20 13:32:50,473 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:32:50,475 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:50,476 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:32:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-20 13:32:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-20 13:32:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2024-09-20 13:32:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-20 13:32:50,481 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2024-09-20 13:32:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:50,481 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-20 13:32:50,481 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-20 13:32:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-09-20 13:32:50,482 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:50,482 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:50,500 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-20 13:32:50,683 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:50,683 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:50,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:50,684 INFO L85 PathProgramCache]: Analyzing trace with hash 218121720, now seen corresponding path program 1 times [2024-09-20 13:32:50,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:50,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687265119] [2024-09-20 13:32:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:50,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:32:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581566531] [2024-09-20 13:32:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:50,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:50,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:50,712 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) [2024-09-20 13:32:50,714 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 13:32:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:50,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-20 13:32:50,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:32:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 13:32:50,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:32:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 13:32:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687265119] [2024-09-20 13:32:51,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:32:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581566531] [2024-09-20 13:32:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581566531] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:32:51,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:32:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-09-20 13:32:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696381257] [2024-09-20 13:32:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:51,105 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-20 13:32:51,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-20 13:32:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:32:51,106 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:51,209 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2024-09-20 13:32:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-20 13:32:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-09-20 13:32:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:51,212 INFO L225 Difference]: With dead ends: 18 [2024-09-20 13:32:51,212 INFO L226 Difference]: Without dead ends: 18 [2024-09-20 13:32:51,212 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-09-20 13:32:51,212 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:51,213 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 13:32:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-09-20 13:32:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-09-20 13:32:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 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) [2024-09-20 13:32:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2024-09-20 13:32:51,219 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2024-09-20 13:32:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:51,219 INFO L474 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2024-09-20 13:32:51,219 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-20 13:32:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2024-09-20 13:32:51,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:32:51,220 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:51,220 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:51,237 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-20 13:32:51,421 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-20 13:32:51,422 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:51,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:51,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2107010563, now seen corresponding path program 1 times [2024-09-20 13:32:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:51,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8404435] [2024-09-20 13:32:51,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:51,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:32:51,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315455538] [2024-09-20 13:32:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:51,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:51,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:51,456 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) [2024-09-20 13:32:51,458 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 13:32:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:51,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 13:32:51,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:32:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-20 13:32:51,697 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:32:51,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8404435] [2024-09-20 13:32:51,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:32:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315455538] [2024-09-20 13:32:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315455538] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:32:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 13:32:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-20 13:32:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984741360] [2024-09-20 13:32:51,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:51,698 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 13:32:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 13:32:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-20 13:32:51,699 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-20 13:32:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:51,795 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-09-20 13:32:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-20 13:32:51,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (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) Word has length 21 [2024-09-20 13:32:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:51,796 INFO L225 Difference]: With dead ends: 26 [2024-09-20 13:32:51,796 INFO L226 Difference]: Without dead ends: 24 [2024-09-20 13:32:51,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-09-20 13:32:51,797 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:51,798 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 13:32:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-20 13:32:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-09-20 13:32:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2024-09-20 13:32:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-09-20 13:32:51,802 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 21 [2024-09-20 13:32:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:51,802 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-09-20 13:32:51,802 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (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) [2024-09-20 13:32:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-09-20 13:32:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-09-20 13:32:51,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:51,803 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:51,821 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-20 13:32:52,003 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:52,004 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:52,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1848845125, now seen corresponding path program 1 times [2024-09-20 13:32:52,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:52,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155324509] [2024-09-20 13:32:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 13:32:52,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841815815] [2024-09-20 13:32:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:52,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:52,021 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) [2024-09-20 13:32:52,025 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-20 13:32:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:52,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-20 13:32:52,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:32:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:32:52,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:32:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-20 13:32:52,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:52,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155324509] [2024-09-20 13:32:52,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 13:32:52,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841815815] [2024-09-20 13:32:52,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841815815] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 13:32:52,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:32:52,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-09-20 13:32:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418131988] [2024-09-20 13:32:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:32:52,755 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 13:32:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 13:32:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-09-20 13:32:52,756 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2024-09-20 13:32:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:58,266 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-09-20 13:32:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 13:32:58,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) Word has length 21 [2024-09-20 13:32:58,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:58,268 INFO L225 Difference]: With dead ends: 32 [2024-09-20 13:32:58,269 INFO L226 Difference]: Without dead ends: 30 [2024-09-20 13:32:58,269 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-09-20 13:32:58,270 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:58,270 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 25 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-20 13:32:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-09-20 13:32:58,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-09-20 13:32:58,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 13:32:58,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-09-20 13:32:58,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 21 [2024-09-20 13:32:58,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:58,276 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-09-20 13:32:58,276 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2024-09-20 13:32:58,276 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-09-20 13:32:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-20 13:32:58,277 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:58,277 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-09-20 13:32:58,295 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-20 13:32:58,481 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-09-20 13:32:58,482 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:58,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:58,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2139194864, now seen corresponding path program 1 times [2024-09-20 13:32:58,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:58,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731316733] [2024-09-20 13:32:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:58,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:32:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:58,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 13:32:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:58,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:32:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:32:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731316733] [2024-09-20 13:32:58,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731316733] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:32:58,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335980275] [2024-09-20 13:32:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:58,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:58,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:58,700 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) [2024-09-20 13:32:58,702 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-20 13:32:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:58,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 13:32:58,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:32:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:32:58,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:32:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-20 13:32:59,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335980275] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:32:59,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:32:59,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-09-20 13:32:59,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699459011] [2024-09-20 13:32:59,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:32:59,113 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-20 13:32:59,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:32:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-20 13:32:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-09-20 13:32:59,114 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 13:32:59,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:32:59,407 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2024-09-20 13:32:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-20 13:32:59,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 31 [2024-09-20 13:32:59,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:32:59,409 INFO L225 Difference]: With dead ends: 45 [2024-09-20 13:32:59,409 INFO L226 Difference]: Without dead ends: 45 [2024-09-20 13:32:59,409 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-09-20 13:32:59,409 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:32:59,410 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:32:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-20 13:32:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2024-09-20 13:32:59,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 13:32:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2024-09-20 13:32:59,417 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 31 [2024-09-20 13:32:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:32:59,417 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2024-09-20 13:32:59,419 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-20 13:32:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2024-09-20 13:32:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-20 13:32:59,420 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:32:59,421 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2024-09-20 13:32:59,433 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-20 13:32:59,621 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:59,622 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:32:59,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:32:59,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1506089371, now seen corresponding path program 2 times [2024-09-20 13:32:59,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:32:59,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814827704] [2024-09-20 13:32:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:32:59,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:32:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:59,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:32:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:59,822 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 13:32:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:59,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:32:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:59,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:32:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:32:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:32:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:32:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814827704] [2024-09-20 13:32:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814827704] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:32:59,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881001256] [2024-09-20 13:32:59,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 13:32:59,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:32:59,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:32:59,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:32:59,841 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-20 13:32:59,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 13:32:59,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:32:59,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-20 13:32:59,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:33:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:33:00,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 13:33:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:33:00,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881001256] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 13:33:00,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-20 13:33:00,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-09-20 13:33:00,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531222581] [2024-09-20 13:33:00,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-20 13:33:00,431 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-09-20 13:33:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:33:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-09-20 13:33:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-09-20 13:33:00,432 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 13:33:00,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:33:00,784 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-09-20 13:33:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-20 13:33:00,784 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 41 [2024-09-20 13:33:00,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:33:00,785 INFO L225 Difference]: With dead ends: 61 [2024-09-20 13:33:00,785 INFO L226 Difference]: Without dead ends: 61 [2024-09-20 13:33:00,786 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-09-20 13:33:00,787 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-20 13:33:00,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-20 13:33:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-09-20 13:33:00,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 42. [2024-09-20 13:33:00,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 13:33:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-09-20 13:33:00,792 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 41 [2024-09-20 13:33:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:33:00,792 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-09-20 13:33:00,792 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 13:33:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-09-20 13:33:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-09-20 13:33:00,794 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 13:33:00,794 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1] [2024-09-20 13:33:00,802 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-20 13:33:00,994 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:33:00,994 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 2 more)] === [2024-09-20 13:33:00,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 13:33:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1450184475, now seen corresponding path program 3 times [2024-09-20 13:33:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 13:33:00,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226566303] [2024-09-20 13:33:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 13:33:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 13:33:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:01,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-20 13:33:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:01,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-20 13:33:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:01,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-20 13:33:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:01,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-20 13:33:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 13:33:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-20 13:33:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 13:33:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226566303] [2024-09-20 13:33:01,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226566303] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-20 13:33:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154901876] [2024-09-20 13:33:01,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-20 13:33:01,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:33:01,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 13:33:01,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-20 13:33:01,104 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-20 13:33:01,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-20 13:33:01,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 13:33:01,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-09-20 13:33:01,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 13:33:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-09-20 13:33:01,528 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 13:33:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154901876] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 13:33:01,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 13:33:01,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-09-20 13:33:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18877052] [2024-09-20 13:33:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 13:33:01,529 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-20 13:33:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 13:33:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-20 13:33:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-09-20 13:33:01,530 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2024-09-20 13:33:01,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 13:33:01,768 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-09-20 13:33:01,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-20 13:33:01,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) Word has length 41 [2024-09-20 13:33:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 13:33:01,769 INFO L225 Difference]: With dead ends: 47 [2024-09-20 13:33:01,769 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 13:33:01,769 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-09-20 13:33:01,769 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-20 13:33:01,770 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-20 13:33:01,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 13:33:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 13:33:01,770 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) [2024-09-20 13:33:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 13:33:01,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2024-09-20 13:33:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 13:33:01,770 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 13:33:01,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 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) [2024-09-20 13:33:01,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 13:33:01,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 13:33:01,776 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-09-20 13:33:01,777 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (3 of 5 remaining) [2024-09-20 13:33:01,777 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (2 of 5 remaining) [2024-09-20 13:33:01,777 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-09-20 13:33:01,777 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 5 remaining) [2024-09-20 13:33:01,783 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-20 13:33:01,977 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 13:33:01,980 INFO L408 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 13:33:01,982 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 13:33:01,983 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-20 13:33:01,983 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-20 13:33:01,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:33:01 BoogieIcfgContainer [2024-09-20 13:33:01,984 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 13:33:01,984 INFO L158 Benchmark]: Toolchain (without parser) took 13773.57ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 105.7MB in the beginning and 175.4MB in the end (delta: -69.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:33:01,984 INFO L158 Benchmark]: Witness Parser took 0.74ms. Allocated memory is still 165.7MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:33:01,985 INFO L158 Benchmark]: CDTParser took 1.39ms. Allocated memory is still 165.7MB. Free memory was 126.2MB in the beginning and 126.1MB in the end (delta: 186.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:33:01,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.78ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 92.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 13:33:01,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.61ms. Allocated memory is still 165.7MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:33:01,985 INFO L158 Benchmark]: Boogie Preprocessor took 49.88ms. Allocated memory is still 165.7MB. Free memory was 90.4MB in the beginning and 88.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 13:33:01,986 INFO L158 Benchmark]: RCFGBuilder took 310.10ms. Allocated memory is still 165.7MB. Free memory was 88.9MB in the beginning and 75.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 13:33:01,986 INFO L158 Benchmark]: TraceAbstraction took 13103.30ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 75.0MB in the beginning and 175.4MB in the end (delta: -100.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 13:33:01,987 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 0.74ms. Allocated memory is still 165.7MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.39ms. Allocated memory is still 165.7MB. Free memory was 126.2MB in the beginning and 126.1MB in the end (delta: 186.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.78ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 92.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.61ms. Allocated memory is still 165.7MB. Free memory was 92.5MB in the beginning and 90.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.88ms. Allocated memory is still 165.7MB. Free memory was 90.4MB in the beginning and 88.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 310.10ms. Allocated memory is still 165.7MB. Free memory was 88.9MB in the beginning and 75.7MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 13103.30ms. Allocated memory was 165.7MB in the beginning and 209.7MB in the end (delta: 44.0MB). Free memory was 75.0MB in the beginning and 175.4MB in the end (delta: -100.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 30]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 13]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 13]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 21 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 13.0s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 305 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 197 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 631 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 108 mSDtfsCounter, 631 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=10, InterpolantAutomatonStates: 70, 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, 11 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 378 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 398 ConstructedInterpolants, 1 QuantifiedInterpolants, 2865 SizeOfPredicates, 9 NumberOfNonLiveVariables, 616 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 221/374 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-20 13:33:02,007 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...