Program: 121400
Project: 121400
Buggy source:
/** 
 * DOC nrousseau Comment method "initializeJetEmittersProject".
 * @throws CoreException
 */
private void initializeJetEmittersProject(IProgressMonitor progressMonitor) throws CoreException {
  final IWorkspace workspace=ResourcesPlugin.getWorkspace();
  IProject project=workspace.getRoot().getProject(JET_PROJECT);
  progressMonitor.subTask(CodeGenPlugin.getPlugin().getString("String_Node_Str",new Object[]{project.getName()}));
  File file=new File(workspace.getRoot().getLocation().append(JET_PROJECT).toPortableString());
  if (file.exists() && !project.isAccessible()) {
    progressMonitor.subTask("String_Node_Str" + project.getName());
    project.create(new SubProgressMonitor(progressMonitor,1));
    progressMonitor.subTask(CodeGenPlugin.getPlugin().getString("String_Node_Str",new Object[]{project.getName()}));
  }
  if (!project.isAccessible()) {
    project.delete(true,progressMonitor);
  }
  if (!project.exists()) {
    progressMonitor.subTask("String_Node_Str" + project.getName());
    project.create(new SubProgressMonitor(progressMonitor,1));
    progressMonitor.subTask(CodeGenPlugin.getPlugin().getString("String_Node_Str",new Object[]{project.getName()}));
  }
  if (!project.isOpen()) {
    project.open(new SubProgressMonitor(progressMonitor,5));
    project.refreshLocal(IResource.DEPTH_INFINITE,new SubProgressMonitor(progressMonitor,1));
  }
  IProjectDescription description=project.getDescription();
  if (!ArrayUtils.contains(description.getNatureIds(),JavaCore.NATURE_ID)) {
    description.setNatureIds(new String[]{JavaCore.NATURE_ID});
    project.setDescription(description,new SubProgressMonitor(progressMonitor,1));
  }
}

Fixed version (ground truth):
/** 
 * DOC nrousseau Comment method "initializeJetEmittersProject".
 * @throws CoreException
 */
private void initializeJetEmittersProject(IProgressMonitor progressMonitor) throws CoreException {
  final IWorkspace workspace=ResourcesPlugin.getWorkspace();
  IProject project=workspace.getRoot().getProject(JET_PROJECT);
  progressMonitor.subTask(CodeGenPlugin.getPlugin().getString("String_Node_Str",new Object[]{project.getName()}));
  File file=new File(workspace.getRoot().getLocation().append(JET_PROJECT).toPortableString());
  if (file.exists() && !project.isAccessible()) {
    progressMonitor.subTask("String_Node_Str" + project.getName());
    project.create(new SubProgressMonitor(progressMonitor,1));
    progressMonitor.subTask(CodeGenPlugin.getPlugin().getString("String_Node_Str",new Object[]{project.getName()}));
  }
 else   if (!project.isAccessible()) {
    project.delete(true,progressMonitor);
  }
  if (!project.exists()) {
    progressMonitor.subTask("String_Node_Str" + project.getName());
    project.create(new SubProgressMonitor(progressMonitor,1));
    progressMonitor.subTask(CodeGenPlugin.getPlugin().getString("String_Node_Str",new Object[]{project.getName()}));
  }
  if (!project.isOpen()) {
    project.open(new SubProgressMonitor(progressMonitor,5));
    project.refreshLocal(IResource.DEPTH_INFINITE,new SubProgressMonitor(progressMonitor,1));
  }
  IProjectDescription description=project.getDescription();
  if (!ArrayUtils.contains(description.getNatureIds(),JavaCore.NATURE_ID)) {
    description.setNatureIds(new String[]{JavaCore.NATURE_ID});
    project.setDescription(description,new SubProgressMonitor(progressMonitor,1));
  }
}