Program: 22964
Project: 22964
Buggy source:
private void generateIds(List<ElementDefinition> list,String name) throws DefinitionException {
  if (list.isEmpty())   return;
  Map<String,String> idMap=new HashMap<String,String>();
  Map<String,String> idList=new HashMap<String,String>();
  SliceList sliceInfo=new SliceList();
  for (  ElementDefinition ed : list) {
    List<String> paths=new ArrayList<String>();
    if (!ed.hasPath())     throw new DefinitionException("String_Node_Str" + Integer.toString(list.indexOf(ed)) + "String_Node_Str"+ name);
    sliceInfo.seeElement(ed);
    String[] pl=ed.getPath().split("String_Node_Str");
    for (int i=paths.size(); i < pl.length; i++)     paths.add(pl[i]);
    String slices[]=sliceInfo.analyse(paths);
    name=null;
    StringBuilder b=new StringBuilder();
    b.append(paths.get(0));
    for (int i=1; i < paths.size(); i++) {
      b.append("String_Node_Str");
      String s=paths.get(i);
      String p=slices[i];
      if (p != null) {
        b.append(p);
        b.append("String_Node_Str");
      }
      b.append(s);
    }
    String bs=b.toString();
    idMap.put(ed.hasId() ? ed.getId() : ed.getPath(),bs);
    ed.setId(bs);
    if (idList.containsKey(bs))     throw new DefinitionException("String_Node_Str" + bs + "String_Node_Str"+ idList.get(bs)+ "String_Node_Str"+ ed.getPath()+ "String_Node_Str"+ name);
    idList.put(bs,ed.getPath());
    if (ed.hasContentReference()) {
      String s=ed.getContentReference().substring(1);
      if (idMap.containsKey(s))       ed.setContentReference("String_Node_Str" + idMap.get(s));
    }
  }
}

Fixed version (ground truth):
private void generateIds(List<ElementDefinition> list,String name) throws DefinitionException {
  if (list.isEmpty())   return;
  Map<String,String> idMap=new HashMap<String,String>();
  Map<String,String> idList=new HashMap<String,String>();
  SliceList sliceInfo=new SliceList();
  for (  ElementDefinition ed : list) {
    List<String> paths=new ArrayList<String>();
    if (!ed.hasPath())     throw new DefinitionException("String_Node_Str" + Integer.toString(list.indexOf(ed)) + "String_Node_Str"+ name);
    sliceInfo.seeElement(ed);
    String[] pl=ed.getPath().split("String_Node_Str");
    for (int i=paths.size(); i < pl.length; i++)     paths.add(pl[i]);
    String slices[]=sliceInfo.analyse(paths);
    name=null;
    StringBuilder b=new StringBuilder();
    b.append(paths.get(0));
    for (int i=1; i < paths.size(); i++) {
      b.append("String_Node_Str");
      String s=paths.get(i);
      String p=slices[i];
      b.append(s);
      if (p != null) {
        b.append("String_Node_Str");
        b.append(p);
      }
    }
    String bs=b.toString();
    idMap.put(ed.hasId() ? ed.getId() : ed.getPath(),bs);
    ed.setId(bs);
    if (idList.containsKey(bs))     throw new DefinitionException("String_Node_Str" + bs + "String_Node_Str"+ idList.get(bs)+ "String_Node_Str"+ ed.getPath()+ "String_Node_Str"+ name);
    idList.put(bs,ed.getPath());
    if (ed.hasContentReference()) {
      String s=ed.getContentReference().substring(1);
      if (idMap.containsKey(s))       ed.setContentReference("String_Node_Str" + idMap.get(s));
    }
  }
}