Program: 88633
Project: 88633
Buggy source:
@SuppressWarnings("String_Node_Str") @Override public void actionPerformed(ActionEvent ae){
  Project project=Application.getInstance().getProject();
  Map<String,Set<String>> jms=AutoSyncProjectListener.getJMSChanges(Application.getInstance().getProject());
  AutoSyncCommitListener listener=AutoSyncProjectListener.getCommitListener(Application.getInstance().getProject());
  if (jms == null || listener == null)   return;
  Map<String,Element> localAdded=listener.getAddedElements();
  Map<String,Element> localDeleted=listener.getDeletedElements();
  Map<String,Element> localChanged=listener.getChangedElements();
  Set<String> webChanged=jms.get("String_Node_Str");
  Set<String> webAdded=jms.get("String_Node_Str");
  Set<String> webDeleted=jms.get("String_Node_Str");
  Set<String> toGet=new HashSet<String>(webChanged);
  toGet.addAll(webAdded);
  if (!toGet.isEmpty()) {
    JSONObject getJson=new JSONObject();
    JSONArray getElements=new JSONArray();
    getJson.put("String_Node_Str",getElements);
    for (    String e : toGet) {
      JSONObject el=new JSONObject();
      el.put("String_Node_Str",e);
      getElements.add(el);
    }
    String url=ExportUtility.getUrlWithWorkspace();
    url+="String_Node_Str";
    String response=ExportUtility.getWithBody(url,getJson.toJSONString());
    if (response == null)     return;
    Map<String,JSONObject> webElements=new HashMap<String,JSONObject>();
    JSONObject webObject=(JSONObject)JSONValue.parse(response);
    JSONArray webArray=(JSONArray)webObject.get("String_Node_Str");
    for (    Object o : webArray) {
      String webId=(String)((JSONObject)o).get("String_Node_Str");
      webElements.put(webId,(JSONObject)o);
    }
    SessionManager sm=SessionManager.getInstance();
    sm.createSession("String_Node_Str");
    try {
      List<JSONObject> webAddedObjects=new ArrayList<JSONObject>();
      for (      String webAdd : webAdded) {
        webAddedObjects.add(webElements.get(webAdd));
      }
      List<JSONObject> webAddedSorted=ImportUtility.getCreationOrder(webAddedObjects);
      if (webAddedSorted != null) {
        for (        Object element : webAddedSorted) {
          ImportUtility.createElement((JSONObject)element,false);
        }
        for (        Object element : webAddedSorted) {
          ImportUtility.createElement((JSONObject)element,true);
        }
      }
 else {
      }
      Set<String> localChangedIds=new HashSet<String>(localChanged.keySet());
      localChangedIds.retainAll(webChanged);
      List<JSONObject> webConflictedObjects=new ArrayList<JSONObject>();
      if (!localChangedIds.isEmpty()) {
        for (        String conflictId : localChangedIds) {
          webConflictedObjects.add(webElements.get(conflictId));
        }
      }
      List<JSONObject> webChangedObjects=new ArrayList<JSONObject>();
      for (      String webUpdate : webChanged) {
        if (localChangedIds.contains(webUpdate))         continue;
        webChangedObjects.add(webElements.get(webUpdate));
      }
      for (      JSONObject webUpdated : webChangedObjects) {
        Element e=ExportUtility.getElementFromID((String)webUpdated.get("String_Node_Str"));
        ImportUtility.updateElement(e,webUpdated);
      }
      for (      String e : webDeleted) {
        Element toBeDeleted=ExportUtility.getElementFromID(e);
        if (toBeDeleted == null)         continue;
        if (!toBeDeleted.isEditable())         TeamworkUtils.lockElement(project,toBeDeleted,false);
        try {
          ModelElementsManager.getInstance().removeElement(toBeDeleted);
        }
 catch (        ReadOnlyElementException ex) {
        }
      }
      sm.closeSession();
    }
 catch (    Exception e) {
      sm.cancelSession();
    }
  }
  if (commit) {
    JSONArray toSendElements=new JSONArray();
    for (    Element e : localAdded.values()) {
      toSendElements.add(ExportUtility.fillElement(e,null));
    }
    for (    Element e : localChanged.values()) {
      toSendElements.add(ExportUtility.fillElement(e,null));
    }
    JSONObject toSendUpdates=new JSONObject();
    toSendUpdates.put("String_Node_Str",toSendElements);
    toSendUpdates.put("String_Node_Str","String_Node_Str");
    OutputQueue.getInstance().offer(new Request(ExportUtility.getPostElementsUrl(),toSendUpdates.toJSONString(),"String_Node_Str",true));
    JSONArray toDeleteElements=new JSONArray();
    for (    String e : localDeleted.keySet()) {
      JSONObject toDelete=new JSONObject();
      toDelete.put("String_Node_Str",e);
      toDeleteElements.add(toDelete);
    }
    toSendUpdates.put("String_Node_Str",toDeleteElements);
    OutputQueue.getInstance().offer(new Request(ExportUtility.getUrlWithWorkspace() + "String_Node_Str",toSendUpdates.toJSONString(),"String_Node_Str",true));
  }
}

Fixed version (ground truth):
@SuppressWarnings("String_Node_Str") @Override public void actionPerformed(ActionEvent ae){
  Application.getInstance().getGUILog().log("String_Node_Str");
  Project project=Application.getInstance().getProject();
  Map<String,Set<String>> jms=AutoSyncProjectListener.getJMSChanges(Application.getInstance().getProject());
  AutoSyncCommitListener listener=AutoSyncProjectListener.getCommitListener(Application.getInstance().getProject());
  if (jms == null || listener == null)   return;
  Map<String,Element> localAdded=listener.getAddedElements();
  Map<String,Element> localDeleted=listener.getDeletedElements();
  Map<String,Element> localChanged=listener.getChangedElements();
  Set<String> webChanged=jms.get("String_Node_Str");
  Set<String> webAdded=jms.get("String_Node_Str");
  Set<String> webDeleted=jms.get("String_Node_Str");
  Set<String> toGet=new HashSet<String>(webChanged);
  toGet.addAll(webAdded);
  Map<String,JSONObject> cannotAdd=new HashMap<String,JSONObject>();
  Map<String,JSONObject> cannotChange=new HashMap<String,JSONObject>();
  Set<String> cannotDelete=new HashSet<String>();
  if (!toGet.isEmpty()) {
    TeamworkUtils.lockElement(project,project.getModel(),true);
    JSONObject getJson=new JSONObject();
    JSONArray getElements=new JSONArray();
    getJson.put("String_Node_Str",getElements);
    for (    String e : toGet) {
      JSONObject el=new JSONObject();
      el.put("String_Node_Str",e);
      getElements.add(el);
    }
    String url=ExportUtility.getUrlWithWorkspace();
    url+="String_Node_Str";
    String response=ExportUtility.getWithBody(url,getJson.toJSONString());
    if (response == null)     return;
    Map<String,JSONObject> webElements=new HashMap<String,JSONObject>();
    JSONObject webObject=(JSONObject)JSONValue.parse(response);
    JSONArray webArray=(JSONArray)webObject.get("String_Node_Str");
    for (    Object o : webArray) {
      String webId=(String)((JSONObject)o).get("String_Node_Str");
      webElements.put(webId,(JSONObject)o);
    }
    List<JSONObject> webAddedObjects=new ArrayList<JSONObject>();
    for (    String webAdd : webAdded) {
      if (webElements.containsKey(webAdd))       webAddedObjects.add(webElements.get(webAdd));
    }
    List<JSONObject> webAddedSorted=ImportUtility.getCreationOrder(webAddedObjects);
    Set<String> localChangedIds=new HashSet<String>(localChanged.keySet());
    localChangedIds.retainAll(webChanged);
    JSONArray webConflictedObjects=new JSONArray();
    Set<Element> localConflictedElements=new HashSet<Element>();
    if (!localChangedIds.isEmpty()) {
      for (      String conflictId : localChangedIds) {
        if (webElements.containsKey(conflictId)) {
          webConflictedObjects.add(webElements.get(conflictId));
          localConflictedElements.add(localChanged.get(conflictId));
        }
      }
    }
    List<JSONObject> webChangedObjects=new ArrayList<JSONObject>();
    for (    String webUpdate : webChanged) {
      if (localChangedIds.contains(webUpdate))       continue;
      if (webElements.containsKey(webUpdate))       webChangedObjects.add(webElements.get(webUpdate));
    }
    Application.getInstance().getGUILog().log("String_Node_Str");
    SessionManager sm=SessionManager.getInstance();
    sm.createSession("String_Node_Str");
    try {
      if (webAddedSorted != null) {
        for (        Object element : webAddedSorted) {
          ImportUtility.createElement((JSONObject)element,false);
        }
        for (        Object element : webAddedSorted) {
          try {
            ImportUtility.createElement((JSONObject)element,true);
          }
 catch (          Exception ex) {
            cannotAdd.put((String)((JSONObject)element).get("String_Node_Str"),(JSONObject)element);
          }
        }
      }
 else {
        for (        Object element : webAddedObjects) {
          cannotAdd.put((String)((JSONObject)element).get("String_Node_Str"),(JSONObject)element);
        }
      }
      for (      JSONObject webUpdated : webChangedObjects) {
        Element e=ExportUtility.getElementFromID((String)webUpdated.get("String_Node_Str"));
        if (e == null) {
          continue;
        }
        try {
          ImportUtility.updateElement(e,webUpdated);
          ImportUtility.setOwner(e,webUpdated);
        }
 catch (        Exception ex) {
          cannotChange.put(ExportUtility.getElementID(e),webUpdated);
        }
      }
      for (      String e : webDeleted) {
        Element toBeDeleted=ExportUtility.getElementFromID(e);
        if (toBeDeleted == null)         continue;
        try {
          ModelElementsManager.getInstance().removeElement(toBeDeleted);
        }
 catch (        Exception ex) {
          cannotDelete.add(e);
        }
      }
      Application.getInstance().getGUILog().log("String_Node_Str");
      listener.disable();
      sm.closeSession();
      listener.enable();
      JSONObject mvResult=new JSONObject();
      mvResult.put("String_Node_Str",webConflictedObjects);
      ModelValidator mv=new ModelValidator(null,mvResult,false,localConflictedElements,false);
      mv.validate(false,null);
      Set<Element> conflictedElements=mv.getDifferentElements();
      if (!conflictedElements.isEmpty()) {
        Application.getInstance().getGUILog().log("String_Node_Str");
        mv.showWindow();
        return;
      }
    }
 catch (    Exception e) {
      sm.cancelSession();
    }
  }
 else {
    Application.getInstance().getGUILog().log("String_Node_Str");
  }
  if (commit) {
    Application.getInstance().getGUILog().log("String_Node_Str");
    JSONArray toSendElements=new JSONArray();
    for (    Element e : localAdded.values()) {
      toSendElements.add(ExportUtility.fillElement(e,null));
    }
    for (    Element e : localChanged.values()) {
      toSendElements.add(ExportUtility.fillElement(e,null));
    }
    JSONObject toSendUpdates=new JSONObject();
    toSendUpdates.put("String_Node_Str",toSendElements);
    toSendUpdates.put("String_Node_Str","String_Node_Str");
    if (toSendElements.size() > 100) {
    }
    if (!toSendUpdates.isEmpty())     OutputQueue.getInstance().offer(new Request(ExportUtility.getPostElementsUrl(),toSendUpdates.toJSONString(),"String_Node_Str",true));
    localAdded.clear();
    localChanged.clear();
    JSONArray toDeleteElements=new JSONArray();
    for (    String e : localDeleted.keySet()) {
      JSONObject toDelete=new JSONObject();
      toDelete.put("String_Node_Str",e);
      toDeleteElements.add(toDelete);
    }
    toSendUpdates.put("String_Node_Str",toDeleteElements);
    if (!toDeleteElements.isEmpty())     OutputQueue.getInstance().offer(new Request(ExportUtility.getUrlWithWorkspace() + "String_Node_Str",toSendUpdates.toJSONString(),"String_Node_Str",true));
    localDeleted.clear();
    if (toDeleteElements.isEmpty() && toSendElements.isEmpty())     Application.getInstance().getGUILog().log("String_Node_Str");
 else     Application.getInstance().getGUILog().log("String_Node_Str");
  }
}