Program: 9342
Project: 9342
Buggy source:
@Override public void start(){
  stop=false;
  isRunning=true;
  long totalTimeMills=System.currentTimeMillis();
  long celaTimeMills=0;
  edge.start();
  logger.debug("String_Node_Str");
  logger.debug("String_Node_Str" + edge.getLL());
  logger.debug("String_Node_Str");
  celaTimeMills=System.currentTimeMillis();
  cela.start();
  celaTimeMills=System.currentTimeMillis() - celaTimeMills;
  NavigableSet<? extends EvaluatedDescription> evaluatedDescriptions=cela.getCurrentlyBestEvaluatedDescriptions();
  OWLOntologyManager manager=OWLManager.createOWLOntologyManager();
  Set<? extends OWLAxiom> candidateAxioms;
  if (getClassAxiomType().equalsIgnoreCase("String_Node_Str") || getClassAxiomType().equalsIgnoreCase("String_Node_Str")) {
    candidateAxioms=convertIntoSubClassOfAxioms(manager,evaluatedDescriptions);
  }
 else {
    candidateAxioms=convertIntoEquivalentClassesAxioms(manager,evaluatedDescriptions);
  }
  logger.info("String_Node_Str");
  Set<OWLAxiom> learnedAxioms=null;
  try {
    learnedAxioms=greedySearch(candidateAxioms);
  }
 catch (  UnsupportedLearnedAxiom ex) {
    logger.error(ex.getMessage());
    System.exit(-1);
  }
  logger.info("String_Node_Str");
  OWLOntology finalOntology=edge.getSourcesOntology();
  if (cela.getLearningProblem() instanceof ClassLearningProblem) {
    try {
      finalOntology=replaceDummyClass(finalOntology,learnedAxioms);
    }
 catch (    UnsupportedLearnedAxiom ex) {
      logger.error(ex.getMessage());
      System.exit(-1);
    }
  }
 else {
    for (    OWLAxiom axiom : safe(learnedAxioms)) {
      logger.info("String_Node_Str" + axiom);
    }
  }
  try {
    OWLUtils.saveOntology(finalOntology,outputFile,outFormat);
  }
 catch (  OWLOntologyStorageException e) {
    String msg="String_Node_Str" + e.getMessage();
    throw new StructureLearningException(msg);
  }
  totalTimeMills=System.currentTimeMillis() - totalTimeMills;
  printTimings(totalTimeMills,celaTimeMills,edge.getTimeMap());
}

Fixed version (ground truth):
@Override public void start(){
  stop=false;
  isRunning=true;
  long totalTimeMills=System.currentTimeMillis();
  long celaTimeMills=0;
  edge.start();
  logger.debug("String_Node_Str");
  logger.debug("String_Node_Str" + edge.getLL());
  logger.debug("String_Node_Str");
  celaTimeMills=System.currentTimeMillis();
  cela.start();
  celaTimeMills=System.currentTimeMillis() - celaTimeMills;
  NavigableSet<? extends EvaluatedDescription> evaluatedDescriptions=cela.getCurrentlyBestEvaluatedDescriptions();
  OWLOntologyManager manager=OWLManager.createOWLOntologyManager();
  Set<? extends OWLAxiom> candidateAxioms;
  if (getClassAxiomType().equalsIgnoreCase("String_Node_Str") || getClassAxiomType().equalsIgnoreCase("String_Node_Str")) {
    candidateAxioms=convertIntoSubClassOfAxioms(manager,evaluatedDescriptions);
  }
 else {
    candidateAxioms=convertIntoEquivalentClassesAxioms(manager,evaluatedDescriptions);
  }
  logger.info("String_Node_Str");
  Set<OWLAxiom> learnedAxioms=null;
  try {
    learnedAxioms=greedySearch(candidateAxioms);
  }
 catch (  UnsupportedLearnedAxiom ex) {
    logger.error(ex.getMessage());
    System.exit(-1);
  }
  logger.info("String_Node_Str");
  OWLOntology finalOntology=edge.getSourcesOntology();
  if (cela.getLearningProblem() instanceof ClassLearningProblem) {
    try {
      finalOntology=replaceDummyClass(finalOntology,learnedAxioms);
    }
 catch (    UnsupportedLearnedAxiom ex) {
      logger.error(ex.getMessage());
      System.exit(-1);
    }
  }
 else {
    for (    OWLAxiom axiom : safe(learnedAxioms)) {
      logger.info("String_Node_Str" + axiom);
    }
  }
  try {
    logger.info("String_Node_Str");
    OWLUtils.saveOntology(finalOntology,outputFile,outFormat);
  }
 catch (  OWLOntologyStorageException e) {
    String msg="String_Node_Str" + e.getMessage();
    throw new StructureLearningException(msg);
  }
  totalTimeMills=System.currentTimeMillis() - totalTimeMills;
  printTimings(totalTimeMills,celaTimeMills,edge.getTimeMap());
}