Program: 125522
Project: 125522
Buggy source:
private Map<ImportItem,List<ImportItem>> getTestCaseItemMap(List<ImportItem> items){
  Map<ImportItem,List<ImportItem>> map=new HashMap<ImportItem,List<ImportItem>>();
  ITestContainerProviderService testContainerService=null;
  if (GlobalServiceRegister.getDefault().isServiceRegistered(ITestContainerProviderService.class)) {
    testContainerService=(ITestContainerProviderService)GlobalServiceRegister.getDefault().getService(ITestContainerProviderService.class);
  }
  if (items != null && testContainerService != null) {
    Map<String,ImportItem> itemMap=new HashMap<String,ImportItem>();
    for (    ImportItem ir : items) {
      if (ir.getItem() != null && !testContainerService.isTestContainerItem(ir.getItem())) {
        itemMap.put(ir.getProperty().getId(),ir);
        map.put(ir,new ArrayList<ImportItem>());
      }
    }
    Set<String> keys=itemMap.keySet();
    for (    String key : keys) {
      Item item=itemMap.get(key).getItem();
      if (item == null) {
        continue;
      }
      List<ImportItem> children=new ArrayList<ImportItem>();
      for (      ImportItem child : items) {
        Item childItem=child.getItem();
        if (childItem == null) {
          continue;
        }
        boolean isTestContainer=testContainerService.isTestContainerItem(childItem);
        if (isTestContainer) {
          String path=childItem.getState().getPath();
          if (path != null && path.contains("String_Node_Str")) {
            int index=path.indexOf("String_Node_Str");
            path=path.substring(index + 1);
            if (path.equals(item.getProperty().getId())) {
              children.add(child);
            }
          }
        }
      }
      map.put(itemMap.get(key),children);
    }
  }
  return map;
}

Fixed version (ground truth):
private Map<ImportItem,List<ImportItem>> getTestCaseItemMap(List<ImportItem> items){
  Map<ImportItem,List<ImportItem>> map=new HashMap<ImportItem,List<ImportItem>>();
  ITestContainerProviderService testContainerService=null;
  if (GlobalServiceRegister.getDefault().isServiceRegistered(ITestContainerProviderService.class)) {
    testContainerService=(ITestContainerProviderService)GlobalServiceRegister.getDefault().getService(ITestContainerProviderService.class);
  }
  if (items != null && testContainerService != null) {
    Map<String,List<ImportItem>> itemMap=new HashMap<String,List<ImportItem>>();
    for (    ImportItem ir : items) {
      if (ir.getItem() != null && !testContainerService.isTestContainerItem(ir.getItem())) {
        String id=ir.getProperty().getId();
        List<ImportItem> itemList=itemMap.get(id);
        if (itemList == null) {
          itemList=new LinkedList<ImportItem>();
          itemMap.put(id,itemList);
        }
        if (!itemList.contains(ir)) {
          itemList.add(ir);
        }
        map.put(ir,new ArrayList<ImportItem>());
      }
    }
    Set<String> keys=itemMap.keySet();
    for (    String key : keys) {
      List<ImportItem> itemList=itemMap.get(key);
      ImportItem importItem=null;
      Item item=null;
      String version="String_Node_Str";
      boolean useLastVersion=true;
      Iterator<ImportItem> iter=itemList.iterator();
      while (iter.hasNext()) {
        ImportItem curImportItem=iter.next();
        Item curItem=curImportItem.getItem();
        String curVersion=curItem.getProperty().getVersion();
        if (item == null) {
          item=curItem;
          version=curVersion;
          importItem=curImportItem;
        }
 else {
          if (curVersion != null && 0 < (curVersion.compareTo(version) * (useLastVersion ? 1 : -1))) {
            item=curItem;
            version=curVersion;
            importItem=curImportItem;
          }
        }
      }
      if (item == null) {
        continue;
      }
      List<ImportItem> children=new ArrayList<ImportItem>();
      for (      ImportItem child : items) {
        Item childItem=child.getItem();
        if (childItem == null) {
          continue;
        }
        boolean isTestContainer=testContainerService.isTestContainerItem(childItem);
        if (isTestContainer) {
          String path=childItem.getState().getPath();
          if (path != null && path.contains("String_Node_Str")) {
            int index=path.indexOf("String_Node_Str");
            path=path.substring(index + 1);
            if (path.equals(item.getProperty().getId())) {
              children.add(child);
            }
          }
        }
      }
      map.put(importItem,children);
    }
  }
  return map;
}