This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:10:33,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:10:33,711 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:10:33,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:10:33,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:10:33,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:10:33,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:10:33,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:10:33,736 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:10:33,736 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:10:33,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:10:33,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:10:33,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:10:33,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:10:33,740 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:10:33,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:10:33,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:10:33,741 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:10:33,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:10:33,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:10:33,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:10:33,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:10:33,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:10:33,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:10:33,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:10:33,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:10:33,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:10:33,746 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:10:33,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:10:33,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:10:33,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:10:33,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:10:33,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:10:33,748 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:10:33,748 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:10:33,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:10:33,749 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:10:33,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:10:34,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:10:34,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:10:34,029 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:10:34,029 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:10:34,030 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sendmail-close-angle.yml/witness-2.1.yml [2024-09-15 20:10:34,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:10:34,073 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:10:34,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-15 20:10:35,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:10:35,606 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:10:35,607 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-15 20:10:35,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7d0eb075e/d0bd4fbf60444409b50b8b1cde542a3b/FLAG8a4987ba5 [2024-09-15 20:10:35,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7d0eb075e/d0bd4fbf60444409b50b8b1cde542a3b [2024-09-15 20:10:35,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:10:35,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:10:35,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:10:35,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:10:35,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:10:35,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:34" (1/2) ... [2024-09-15 20:10:35,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72088cb8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:10:35, skipping insertion in model container [2024-09-15 20:10:35,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:34" (1/2) ... [2024-09-15 20:10:35,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@333359be and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:10:35, skipping insertion in model container [2024-09-15 20:10:35,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:10:35" (2/2) ... [2024-09-15 20:10:35,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72088cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35, skipping insertion in model container [2024-09-15 20:10:35,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:10:35" (2/2) ... [2024-09-15 20:10:35,642 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:10:35,644 INFO L1541 ArrayList]: Loop invariant at [L37-L48] ((((((((long long) 2 + buflim) == bufferlen) && (in == 0)) && (0 <= buflim)) && (buf == 0)) && (((long long) bufferlen + 1) <= inlen)) || ((((((((long long) bufferlen + in) + 1) <= ((long long) buf + inlen)) && (((long long) 2 + buflim) == bufferlen)) && (1 <= in)) && (0 <= buf)) && (buf <= buflim))) [2024-09-15 20:10:35,644 INFO L1541 ArrayList]: Function contract at [L17]: requires (\old(cond) != 0), ensures (\old(cond) != 0) [2024-09-15 20:10:35,660 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:10:35,787 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] [2024-09-15 20:10:35,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:10:35,804 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-15 20:10:35,830 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i[893,906] Start Parsing Local [2024-09-15 20:10:35,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:10:35,853 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:10:35,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35 WrapperNode [2024-09-15 20:10:35,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:10:35,855 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:10:35,855 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:10:35,855 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:10:35,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,882 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2024-09-15 20:10:35,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:10:35,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:10:35,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:10:35,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:10:35,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,900 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 [2024-09-15 20:10:35,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:10:35,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:10:35,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:10:35,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:10:35,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (1/1) ... [2024-09-15 20:10:35,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:10:35,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:35,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-15 20:10:35,949 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-15 20:10:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:10:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:10:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:10:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:10:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 20:10:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 20:10:36,036 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:10:36,038 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:10:36,192 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-15 20:10:36,217 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-09-15 20:10:36,217 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:10:36,250 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:10:36,250 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 20:10:36,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:10:36 BoogieIcfgContainer [2024-09-15 20:10:36,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:10:36,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:10:36,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:10:36,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:10:36,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:10:34" (1/4) ... [2024-09-15 20:10:36,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33803e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:10:36, skipping insertion in model container [2024-09-15 20:10:36,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:10:35" (2/4) ... [2024-09-15 20:10:36,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33803e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:10:36, skipping insertion in model container [2024-09-15 20:10:36,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:10:35" (3/4) ... [2024-09-15 20:10:36,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b33803e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:10:36, skipping insertion in model container [2024-09-15 20:10:36,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:10:36" (4/4) ... [2024-09-15 20:10:36,262 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2024-09-15 20:10:36,277 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:10:36,277 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-09-15 20:10:36,327 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:10:36,334 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;@6b56d159, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:10:36,335 INFO L337 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-09-15 20:10:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-15 20:10:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:10:36,343 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:36,344 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:10:36,344 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:36,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:36,350 INFO L85 PathProgramCache]: Analyzing trace with hash 120220410, now seen corresponding path program 1 times [2024-09-15 20:10:36,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256221722] [2024-09-15 20:10:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:36,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:36,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256221722] [2024-09-15 20:10:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256221722] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:36,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:36,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:10:36,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485588272] [2024-09-15 20:10:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:36,584 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:10:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:10:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:36,608 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 28 states have internal predecessors, (34), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:10:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:36,737 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2024-09-15 20:10:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:10:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-15 20:10:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:36,755 INFO L225 Difference]: With dead ends: 48 [2024-09-15 20:10:36,755 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 20:10:36,757 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:36,761 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 27 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:36,762 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 55 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 20:10:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-15 20:10:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 31 states have internal predecessors, (33), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:10:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2024-09-15 20:10:36,817 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 5 [2024-09-15 20:10:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:36,817 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2024-09-15 20:10:36,817 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:10:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2024-09-15 20:10:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-15 20:10:36,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:36,818 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:36,818 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:10:36,818 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:36,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:36,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1170452562, now seen corresponding path program 1 times [2024-09-15 20:10:36,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:36,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632509913] [2024-09-15 20:10:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:36,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:36,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632509913] [2024-09-15 20:10:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632509913] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:10:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825985412] [2024-09-15 20:10:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:36,923 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:10:36,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:36,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:10:36,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:36,926 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:10:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:36,960 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2024-09-15 20:10:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:10:36,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-09-15 20:10:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:36,963 INFO L225 Difference]: With dead ends: 46 [2024-09-15 20:10:36,963 INFO L226 Difference]: Without dead ends: 46 [2024-09-15 20:10:36,964 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 [2024-09-15 20:10:36,964 INFO L434 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:36,965 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-09-15 20:10:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-09-15 20:10:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 32 states have internal predecessors, (33), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 20:10:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2024-09-15 20:10:36,979 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 9 [2024-09-15 20:10:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:36,979 INFO L474 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2024-09-15 20:10:36,979 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:10:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2024-09-15 20:10:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-15 20:10:36,981 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:36,981 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:36,981 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 20:10:36,981 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:36,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:36,982 INFO L85 PathProgramCache]: Analyzing trace with hash -476739155, now seen corresponding path program 1 times [2024-09-15 20:10:36,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:36,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473862978] [2024-09-15 20:10:36,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:36,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:37,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473862978] [2024-09-15 20:10:37,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473862978] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:10:37,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891074117] [2024-09-15 20:10:37,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,044 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:10:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:10:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:37,045 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-15 20:10:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,062 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2024-09-15 20:10:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:10:37,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2024-09-15 20:10:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,063 INFO L225 Difference]: With dead ends: 41 [2024-09-15 20:10:37,063 INFO L226 Difference]: Without dead ends: 41 [2024-09-15 20:10:37,067 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:37,068 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,068 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-15 20:10:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-15 20:10:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 20:10:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2024-09-15 20:10:37,076 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 11 [2024-09-15 20:10:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,076 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2024-09-15 20:10:37,076 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-15 20:10:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2024-09-15 20:10:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-15 20:10:37,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,077 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,077 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 20:10:37,077 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash -476738994, now seen corresponding path program 1 times [2024-09-15 20:10:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991571878] [2024-09-15 20:10:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:37,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991571878] [2024-09-15 20:10:37,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991571878] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 20:10:37,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604179276] [2024-09-15 20:10:37,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,099 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-15 20:10:37,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-15 20:10:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-15 20:10:37,100 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-15 20:10:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,137 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2024-09-15 20:10:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-15 20:10:37,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2024-09-15 20:10:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,138 INFO L225 Difference]: With dead ends: 40 [2024-09-15 20:10:37,138 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 20:10:37,139 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 [2024-09-15 20:10:37,139 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,140 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 20:10:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-15 20:10:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.2) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-15 20:10:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2024-09-15 20:10:37,147 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 11 [2024-09-15 20:10:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,147 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2024-09-15 20:10:37,147 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-09-15 20:10:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2024-09-15 20:10:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 20:10:37,148 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,148 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,148 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 20:10:37,148 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash -26025391, now seen corresponding path program 1 times [2024-09-15 20:10:37,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075574786] [2024-09-15 20:10:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 20:10:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:10:37,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075574786] [2024-09-15 20:10:37,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075574786] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:10:37,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546433933] [2024-09-15 20:10:37,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,232 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:10:37,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:10:37,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:37,233 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-09-15 20:10:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,302 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2024-09-15 20:10:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:10:37,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 14 [2024-09-15 20:10:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,307 INFO L225 Difference]: With dead ends: 43 [2024-09-15 20:10:37,307 INFO L226 Difference]: Without dead ends: 43 [2024-09-15 20:10:37,307 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:37,307 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,308 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 41 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-15 20:10:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-09-15 20:10:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 28 states have internal predecessors, (30), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:10:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2024-09-15 20:10:37,328 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 14 [2024-09-15 20:10:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,331 INFO L474 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2024-09-15 20:10:37,331 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-09-15 20:10:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2024-09-15 20:10:37,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 20:10:37,332 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,332 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,332 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 20:10:37,332 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash 7499460, now seen corresponding path program 1 times [2024-09-15 20:10:37,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268287170] [2024-09-15 20:10:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:10:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:10:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:10:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268287170] [2024-09-15 20:10:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268287170] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:10:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348167843] [2024-09-15 20:10:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,409 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:10:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:10:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:37,409 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:10:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,478 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2024-09-15 20:10:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:10:37,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-09-15 20:10:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,480 INFO L225 Difference]: With dead ends: 38 [2024-09-15 20:10:37,480 INFO L226 Difference]: Without dead ends: 38 [2024-09-15 20:10:37,481 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:37,481 INFO L434 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,482 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 72 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-15 20:10:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-09-15 20:10:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:10:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2024-09-15 20:10:37,485 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 19 [2024-09-15 20:10:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,485 INFO L474 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2024-09-15 20:10:37,485 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:10:37,486 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2024-09-15 20:10:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-15 20:10:37,486 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,486 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,487 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-15 20:10:37,487 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2059243976, now seen corresponding path program 1 times [2024-09-15 20:10:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673796313] [2024-09-15 20:10:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 20:10:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 20:10:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 20:10:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673796313] [2024-09-15 20:10:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673796313] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-15 20:10:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661843105] [2024-09-15 20:10:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,554 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:10:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:10:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:37,555 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:10:37,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,597 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2024-09-15 20:10:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-15 20:10:37,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-09-15 20:10:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,598 INFO L225 Difference]: With dead ends: 40 [2024-09-15 20:10:37,598 INFO L226 Difference]: Without dead ends: 40 [2024-09-15 20:10:37,599 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-15 20:10:37,599 INFO L434 NwaCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,599 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 92 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-15 20:10:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2024-09-15 20:10:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:10:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2024-09-15 20:10:37,606 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 48 transitions. Word has length 20 [2024-09-15 20:10:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,606 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 48 transitions. [2024-09-15 20:10:37,606 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-15 20:10:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 48 transitions. [2024-09-15 20:10:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-15 20:10:37,607 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,607 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,607 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-15 20:10:37,607 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1172405503, now seen corresponding path program 1 times [2024-09-15 20:10:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317913617] [2024-09-15 20:10:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-15 20:10:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,693 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-15 20:10:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,700 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-09-15 20:10:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:10:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317913617] [2024-09-15 20:10:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317913617] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:10:37,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804363246] [2024-09-15 20:10:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,706 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:10:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:10:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:10:37,707 INFO L87 Difference]: Start difference. First operand 35 states and 48 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 20:10:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,772 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2024-09-15 20:10:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:10:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-09-15 20:10:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,775 INFO L225 Difference]: With dead ends: 41 [2024-09-15 20:10:37,775 INFO L226 Difference]: Without dead ends: 36 [2024-09-15 20:10:37,775 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-09-15 20:10:37,776 INFO L434 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,776 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 46 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:37,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-09-15 20:10:37,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2024-09-15 20:10:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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) [2024-09-15 20:10:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-09-15 20:10:37,783 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 24 [2024-09-15 20:10:37,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,783 INFO L474 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-09-15 20:10:37,783 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 20:10:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-09-15 20:10:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-15 20:10:37,784 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,784 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,784 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-09-15 20:10:37,784 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash -818188923, now seen corresponding path program 1 times [2024-09-15 20:10:37,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940794861] [2024-09-15 20:10:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 20:10:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 20:10:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 20:10:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 20:10:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940794861] [2024-09-15 20:10:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940794861] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:10:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:10:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:10:37,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028222964] [2024-09-15 20:10:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:37,881 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:10:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:10:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:10:37,882 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 20:10:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:37,938 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-09-15 20:10:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:10:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-09-15 20:10:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:37,939 INFO L225 Difference]: With dead ends: 35 [2024-09-15 20:10:37,939 INFO L226 Difference]: Without dead ends: 35 [2024-09-15 20:10:37,939 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-15 20:10:37,940 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:37,940 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 62 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:37,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-15 20:10:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-09-15 20:10:37,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-15 20:10:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-09-15 20:10:37,947 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 25 [2024-09-15 20:10:37,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:37,947 INFO L474 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-09-15 20:10:37,947 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-15 20:10:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-09-15 20:10:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-15 20:10:37,948 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:37,948 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:37,948 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-09-15 20:10:37,948 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:37,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:37,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1485900164, now seen corresponding path program 1 times [2024-09-15 20:10:37,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:37,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675152221] [2024-09-15 20:10:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:37,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:38,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 20:10:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:38,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 20:10:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:38,119 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 20:10:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:38,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 20:10:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:10:38,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:38,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675152221] [2024-09-15 20:10:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675152221] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:38,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341761179] [2024-09-15 20:10:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:38,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:38,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-15 20:10:38,148 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:10:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:38,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 20:10:38,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:10:38,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-15 20:10:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341761179] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:38,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-15 20:10:38,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2024-09-15 20:10:38,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407525357] [2024-09-15 20:10:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:10:38,610 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:10:38,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:38,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:10:38,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-09-15 20:10:38,613 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 20:10:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:38,673 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2024-09-15 20:10:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:10:38,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2024-09-15 20:10:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:38,674 INFO L225 Difference]: With dead ends: 35 [2024-09-15 20:10:38,675 INFO L226 Difference]: Without dead ends: 35 [2024-09-15 20:10:38,676 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:10:38,676 INFO L434 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:38,676 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-15 20:10:38,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-09-15 20:10:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2024-09-15 20:10:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2024-09-15 20:10:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-09-15 20:10:38,679 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 30 [2024-09-15 20:10:38,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:38,679 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-09-15 20:10:38,679 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-15 20:10:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-09-15 20:10:38,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-09-15 20:10:38,680 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:10:38,680 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:38,693 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:10:38,881 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-15 20:10:38,882 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (and 8 more)] === [2024-09-15 20:10:38,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:10:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1964051393, now seen corresponding path program 1 times [2024-09-15 20:10:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:10:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799052033] [2024-09-15 20:10:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:38,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:10:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-09-15 20:10:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 20:10:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-15 20:10:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-09-15 20:10:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,027 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-09-15 20:10:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,029 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-15 20:10:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,031 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-15 20:10:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 20:10:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:10:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799052033] [2024-09-15 20:10:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799052033] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:10:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51616163] [2024-09-15 20:10:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:10:39,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:10:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:10:39,036 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) [2024-09-15 20:10:39,038 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:10:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:10:39,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 20:10:39,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:10:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 20:10:39,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:10:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 20:10:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51616163] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:10:39,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:10:39,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 13 [2024-09-15 20:10:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755107692] [2024-09-15 20:10:39,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:10:39,316 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-15 20:10:39,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:10:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-15 20:10:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-09-15 20:10:39,317 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-15 20:10:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:10:39,530 INFO L93 Difference]: Finished difference Result 64 states and 95 transitions. [2024-09-15 20:10:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 20:10:39,530 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 49 [2024-09-15 20:10:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:10:39,531 INFO L225 Difference]: With dead ends: 64 [2024-09-15 20:10:39,531 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:10:39,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2024-09-15 20:10:39,531 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-15 20:10:39,532 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 108 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-15 20:10:39,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:10:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:10:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-15 20:10:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:10:39,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2024-09-15 20:10:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:10:39,533 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:10:39,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-09-15 20:10:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:10:39,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:10:39,535 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 11 remaining) [2024-09-15 20:10:39,535 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (9 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONPRE_CONDITION (8 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (7 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONPRE_CONDITION (6 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (5 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (4 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONPRE_CONDITION (3 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONPRE_CONDITION (2 of 11 remaining) [2024-09-15 20:10:39,536 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2024-09-15 20:10:39,537 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 11 remaining) [2024-09-15 20:10:39,549 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 20:10:39,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-15 20:10:39,740 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:10:39,741 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:10:39,743 INFO L469 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-09-15 20:10:39,743 INFO L470 ceAbstractionStarter]: WitnessConsidered=1 [2024-09-15 20:10:39,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:10:39 BoogieIcfgContainer [2024-09-15 20:10:39,744 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:10:39,744 INFO L158 Benchmark]: Toolchain (without parser) took 4118.18ms. Allocated memory was 71.3MB in the beginning and 134.2MB in the end (delta: 62.9MB). Free memory was 33.4MB in the beginning and 57.9MB in the end (delta: -24.5MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2024-09-15 20:10:39,744 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:10:39,744 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:10:39,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.15ms. Allocated memory is still 71.3MB. Free memory was 33.2MB in the beginning and 41.3MB in the end (delta: -8.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-09-15 20:10:39,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.11ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 39.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:10:39,745 INFO L158 Benchmark]: Boogie Preprocessor took 24.06ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 38.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:10:39,745 INFO L158 Benchmark]: RCFGBuilder took 343.37ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 38.0MB in the beginning and 84.8MB in the end (delta: -46.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-15 20:10:39,746 INFO L158 Benchmark]: TraceAbstraction took 3490.06ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 84.4MB in the beginning and 57.9MB in the end (delta: 26.4MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2024-09-15 20:10:39,746 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 0.16ms. Allocated memory is still 71.3MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 71.3MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.15ms. Allocated memory is still 71.3MB. Free memory was 33.2MB in the beginning and 41.3MB in the end (delta: -8.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.11ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 39.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.06ms. Allocated memory is still 71.3MB. Free memory was 39.8MB in the beginning and 38.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.37ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 38.0MB in the beginning and 84.8MB in the end (delta: -46.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3490.06ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 84.4MB in the beginning and 57.9MB in the end (delta: 26.4MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 37]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 17]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 17]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 162 mSDsluCounter, 701 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 365 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 444 IncrementalHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 336 mSDtfsCounter, 444 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 195 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, InterpolantAutomatonStates: 58, 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, 32 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 1566 SizeOfPredicates, 5 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 358/368 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-15 20:10:39,767 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...