Program: 95463
Project: 95463
Buggy source:
/** 
 * @param element the element to get the text for 
 * @return a descriptive text for the given element
 */
public static String getTextImpl(Object element){
  if (element instanceof INodePO) {
    String prefix=StringConstants.EMPTY;
    String name=null;
    INodePO node=(INodePO)element;
    if (!checkActivation((INodePO)element)) {
      prefix=INACTIVE_PREFIX;
    }
    if (node instanceof IRefTestSuitePO) {
      name=NodeNameUtil.getText((IRefTestSuitePO)node);
    }
 else     if (node.getName() == null) {
      name=UNNAMED_NODE;
    }
 else     if (node instanceof ICapPO) {
      name=getText((ICapPO)node);
    }
 else     if (node instanceof IExecTestCasePO) {
      name=NodeNameUtil.getText((IExecTestCasePO)node,true);
    }
 else     if (node instanceof ISpecTestCasePO) {
      name=NodeNameUtil.getText((ISpecTestCasePO)node,true);
    }
 else {
      name=node.getName();
    }
    return new StringBuilder(prefix).append(name).toString();
  }
  if (element instanceof IReusedProjectPO) {
    IReusedProjectPO reusedProject=(IReusedProjectPO)element;
    String projectName=reusedProject.getProjectName();
    if (projectName == null) {
      projectName=reusedProject.getProjectGuid();
    }
    return projectName + StringConstants.UNDERSCORE + StringConstants.LEFT_BRACKET+ reusedProject.getVersionString()+ StringConstants.RIGHT_BRACKET;
  }
  if (element instanceof ISpecObjContPO) {
    return Messages.TreeBuilderTestCases;
  }
 else   if (element instanceof IExecObjContPO) {
    IProjectPO activeProject=GeneralStorage.getInstance().getProject();
    if (activeProject != null) {
      return activeProject.getName();
    }
    LOG.error(Messages.GeneralLabelProvier_NoActiveProject);
  }
  return element == null ? StringConstants.EMPTY : element.toString();
}

Fixed version (ground truth):
/** 
 * @param element the element to get the text for 
 * @return a descriptive text for the given element
 */
public static String getTextImpl(Object element){
  if (element instanceof INodePO) {
    String prefix=StringConstants.EMPTY;
    String name=null;
    INodePO node=(INodePO)element;
    if (!checkActivation((INodePO)element)) {
      prefix=INACTIVE_PREFIX;
    }
    if (node instanceof IRefTestSuitePO) {
      name=NodeNameUtil.getText((IRefTestSuitePO)node);
    }
 else     if (node.getName() == null) {
      name=UNNAMED_NODE;
    }
 else     if (node instanceof ICapPO) {
      name=getText((ICapPO)node);
    }
 else     if (node instanceof IExecTestCasePO) {
      name=NodeNameUtil.getText((IExecTestCasePO)node,true);
    }
 else     if (node instanceof ISpecTestCasePO) {
      name=NodeNameUtil.getText((ISpecTestCasePO)node,true);
    }
 else {
      name=node.getName();
    }
    String postfix=StringConstants.EMPTY;
    if (node instanceof ICondStructPO && ((ICondStructPO)node).isNegate()) {
      postfix=NEGATED_POSTFIX;
    }
    return new StringBuilder(prefix).append(name).append(postfix).toString();
  }
  if (element instanceof IReusedProjectPO) {
    IReusedProjectPO reusedProject=(IReusedProjectPO)element;
    String projectName=reusedProject.getProjectName();
    if (projectName == null) {
      projectName=reusedProject.getProjectGuid();
    }
    return projectName + StringConstants.UNDERSCORE + StringConstants.LEFT_BRACKET+ reusedProject.getVersionString()+ StringConstants.RIGHT_BRACKET;
  }
  if (element instanceof ISpecObjContPO) {
    return Messages.TreeBuilderTestCases;
  }
 else   if (element instanceof IExecObjContPO) {
    IProjectPO activeProject=GeneralStorage.getInstance().getProject();
    if (activeProject != null) {
      return activeProject.getName();
    }
    LOG.error(Messages.GeneralLabelProvier_NoActiveProject);
  }
  return element == null ? StringConstants.EMPTY : element.toString();
}