Program: 120518
Project: 120518
Buggy source:
public boolean performFinish(){
  List<DemoProjectBean> checkedElements=getCheckedElements();
  final List<ResourcesManager> finalCheckManagers=getResourceManagers(checkedElements);
  List<ItemRecord> existRecords=populateExistItemRecords(finalCheckManagers);
  boolean choice=false;
  if (existRecords.size() != 0) {
    MessageDialog dialog=new MessageDialog(getShell(),Messages.getString("String_Node_Str"),null,Messages.getString("String_Node_Str"),MessageDialog.QUESTION,new String[]{IDialogConstants.YES_LABEL,IDialogConstants.NO_LABEL},0);
    dialog.open();
    int result=dialog.getReturnCode();
    if (result == 0) {
      choice=true;
    }
 else {
      return choice;
    }
  }
  final boolean overwrite=choice;
  ProgressDialog progressDialog=new ProgressDialog(getShell()){
    private IProgressMonitor monitorWrap;
    @Override public void run(    IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
      monitorWrap=new EventLoopProgressMonitor(monitor);
      for (      ResourcesManager resManager : finalCheckManagers) {
        List<ItemRecord> projectRecords=ImportExportHandlersManager.getInstance().populateImportingItems(resManager,false,monitorWrap);
        ImportExportHandlersManager.getInstance().importItemRecords(monitorWrap,resManager,projectRecords,overwrite,projectRecords.toArray(new ItemRecord[0]),null);
      }
      monitorWrap.done();
      MessageDialog.openInformation(getShell(),Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str"));
    }
  }
;
  try {
    progressDialog.executeProcess();
  }
 catch (  InvocationTargetException e) {
    MessageBoxExceptionHandler.process(e.getTargetException(),getShell());
  }
catch (  InterruptedException e) {
  }
  return true;
}

Fixed version (ground truth):
public boolean performFinish(){
  List<DemoProjectBean> checkedElements=getCheckedElements();
  final List<ResourcesManager> finalCheckManagers=getResourceManagers(checkedElements);
  if (populateExistItemRecords(finalCheckManagers)) {
    MessageDialog dialog=new MessageDialog(getShell(),Messages.getString("String_Node_Str"),null,Messages.getString("String_Node_Str"),MessageDialog.QUESTION,new String[]{IDialogConstants.YES_LABEL,IDialogConstants.NO_LABEL},0);
    dialog.open();
    int result=dialog.getReturnCode();
    if (result != MessageDialog.OK) {
      return false;
    }
  }
  ProgressDialog progressDialog=new ProgressDialog(getShell()){
    private IProgressMonitor monitorWrap;
    @Override public void run(    IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
      monitorWrap=new EventLoopProgressMonitor(monitor);
      for (      ResourcesManager resManager : finalCheckManagers) {
        List<ItemRecord> projectRecords=ImportExportHandlersManager.getInstance().populateImportingItems(resManager,true,monitorWrap);
        ImportExportHandlersManager.getInstance().importItemRecords(monitorWrap,resManager,projectRecords,true,projectRecords.toArray(new ItemRecord[0]),null);
      }
      monitorWrap.done();
      MessageDialog.openInformation(getShell(),Messages.getString("String_Node_Str"),Messages.getString("String_Node_Str"));
    }
  }
;
  try {
    progressDialog.executeProcess();
  }
 catch (  InvocationTargetException e) {
    MessageBoxExceptionHandler.process(e.getTargetException(),getShell());
  }
catch (  InterruptedException e) {
  }
  return true;
}