Program: 96021
Project: 96021
Buggy source:
/** 
 * {@inheritDoc}
 */
public boolean operate(ITreeTraverserContext<INodePO> ctx,INodePO parent,INodePO node,boolean alreadyVisited){
  if (node instanceof IExecTestCasePO) {
    IExecTestCasePO execTC=(IExecTestCasePO)node;
    boolean hasCompleteTestCaseReferences=!execTC.getProblems().contains(ProblemFactory.createMissingReferencedSpecTestCasesProblem());
    if (hasCompleteTestCaseReferences) {
      for (      ICompNamesPairPO pair : execTC.getCompNamesPairs()) {
        String type=Utils.getComponentType(execTC,pair.getFirstName());
        pair.setType(type);
        if (type == null || StringConstants.EMPTY.equals(type)) {
          problemNoCompTypeForCompNamesPairExists(execTC);
        }
      }
    }
  }
 else   if (node instanceof ICapPO) {
    ICapPO cap=(ICapPO)node;
    if (cap.getMetaComponentType() instanceof InvalidComponent) {
      String message=Messages.Component + StringConstants.COLON + StringConstants.SPACE+ cap.getComponentType();
      log.error(Messages.CouldNotFind + StringConstants.SPACE + message);
      problemCompDoesNotExist(cap);
    }
 else     if (cap.getMetaAction() instanceof InvalidAction) {
      String message=Messages.CouldNotFindAction + StringConstants.SPACE + CompSystemI18n.getString(cap.getActionName())+ StringConstants.NEWLINE+ "String_Node_Str"+ StringConstants.SPACE+ Messages.Component+ StringConstants.COLON+ StringConstants.SPACE+ cap.getComponentType();
      log.error(message);
      problemActionDoesNotExist(cap);
    }
    for (    Object paramObj : cap.getParameterList()) {
      if (paramObj instanceof InvalidParam) {
        Param param=(Param)paramObj;
        String message=Messages.Component + StringConstants.COLON + StringConstants.SPACE+ cap.getComponentType()+ StringConstants.NEWLINE+ Messages.Action+ StringConstants.COLON+ StringConstants.SPACE+ CompSystemI18n.getString(cap.getActionName())+ StringConstants.NEWLINE+ Messages.Parameter+ StringConstants.COLON+ StringConstants.SPACE+ CompSystemI18n.getString(param.getName());
        log.error(Messages.CouldNotFind + StringConstants.SPACE + message);
        problemParamDoesNotExist(cap);
      }
    }
  }
  return true;
}

Fixed version (ground truth):
/** 
 * {@inheritDoc}
 */
public boolean operate(ITreeTraverserContext<INodePO> ctx,INodePO parent,INodePO node,boolean alreadyVisited){
  if (node instanceof IExecTestCasePO) {
    IExecTestCasePO execTC=(IExecTestCasePO)node;
    boolean hasCompleteTestCaseReferences=!execTC.getProblems().contains(ProblemFactory.createMissingReferencedSpecTestCasesProblem());
    if (hasCompleteTestCaseReferences) {
      for (      ICompNamesPairPO pair : execTC.getCompNamesPairs()) {
        String type=Utils.getComponentType(execTC,pair.getFirstName());
        pair.setType(type);
        if (type == null || StringConstants.EMPTY.equals(type)) {
          problemNoCompTypeForCompNamesPairExists(execTC);
        }
      }
    }
  }
 else   if (node instanceof ICapPO) {
    ICapPO cap=(ICapPO)node;
    if (cap.getMetaComponentType() instanceof InvalidComponent) {
      String message=Messages.Component + StringConstants.COLON + StringConstants.SPACE+ cap.getComponentType();
      log.error(Messages.CouldNotFind + StringConstants.SPACE + message);
      problemCompDoesNotExist(cap);
    }
 else     if (cap.getMetaAction() instanceof InvalidAction) {
      String message=Messages.CouldNotFindAction + StringConstants.SPACE + CompSystemI18n.getString(cap.getActionName(),true)+ StringConstants.NEWLINE+ "String_Node_Str"+ StringConstants.SPACE+ Messages.Component+ StringConstants.COLON+ StringConstants.SPACE+ cap.getComponentType();
      log.error(message);
      problemActionDoesNotExist(cap);
    }
    for (    Object paramObj : cap.getParameterList()) {
      if (paramObj instanceof InvalidParam) {
        Param param=(Param)paramObj;
        String message=Messages.Component + StringConstants.COLON + StringConstants.SPACE+ cap.getComponentType()+ StringConstants.NEWLINE+ Messages.Action+ StringConstants.COLON+ StringConstants.SPACE+ CompSystemI18n.getString(cap.getActionName(),true)+ StringConstants.NEWLINE+ Messages.Parameter+ StringConstants.COLON+ StringConstants.SPACE+ CompSystemI18n.getString(param.getName(),true);
        log.error(Messages.CouldNotFind + StringConstants.SPACE + message);
        problemParamDoesNotExist(cap);
      }
    }
  }
  return true;
}