Program: 155726
Project: 155726
Buggy source:
/** 
 * Login the user on the Realm Object Server
 * @param credentials credentials to use
 * @param authenticationUrl URL to authenticateUser against
 * @param callback callback when login has completed or failed. This callback will always happen on the UI thread.
 * @throws IllegalArgumentException
 */
public static RealmAsyncTask loginAsync(final Credentials credentials,final String authenticationUrl,final Callback callback){
  final URL authUrl;
  try {
    authUrl=new URL(authenticationUrl);
  }
 catch (  MalformedURLException e) {
    throw new IllegalArgumentException("String_Node_Str" + authenticationUrl + "String_Node_Str",e);
  }
  if (Looper.myLooper() == null) {
    throw new IllegalStateException("String_Node_Str");
  }
  final Handler handler=new Handler(Looper.myLooper());
  final AuthenticationServer server=SyncManager.getAuthServer();
  Future<?> authenticateRequest=SyncManager.NETWORK_POOL_EXECUTOR.submit(new Runnable(){
    @Override public void run(){
      try {
        AuthenticateResponse result=server.authenticateUser(credentials,authUrl,credentials.shouldCreateUser());
        if (result.isValid()) {
          User user=new User(result.getRefreshToken().identity(),result.getRefreshToken(),authUrl);
          postSuccess(user);
        }
 else {
          postError(result.getError());
        }
      }
 catch (      IOException e) {
        postError(new ObjectServerError(ErrorCode.IO_EXCEPTION,e));
      }
    }
    private void postError(    final ObjectServerError error){
      RealmLog.info("String_Node_Str",error);
      if (callback != null) {
        handler.post(new Runnable(){
          @Override public void run(){
            callback.onError(error);
          }
        }
);
      }
    }
    private void postSuccess(    final User user){
      RealmLog.info("String_Node_Str",user);
      if (callback != null) {
        handler.post(new Runnable(){
          @Override public void run(){
            callback.onSuccess(user);
          }
        }
);
      }
    }
  }
);
  authenticateTask=new RealmAsyncTask(authenticateRequest,SyncManager.NETWORK_POOL_EXECUTOR);
  return authenticateTask;
}

Fixed version (ground truth):
/** 
 * Login the user on the Realm Object Server
 * @param credentials credentials to use
 * @param authenticationUrl URL to authenticateUser against
 * @param callback callback when login has completed or failed. This callback will always happen on the UI thread.
 * @throws IllegalArgumentException
 */
public static RealmAsyncTask loginAsync(final Credentials credentials,final String authenticationUrl,final Callback callback){
  final URL authUrl;
  try {
    authUrl=new URL(authenticationUrl);
  }
 catch (  MalformedURLException e) {
    throw new IllegalArgumentException("String_Node_Str" + authenticationUrl + "String_Node_Str",e);
  }
  if (Looper.myLooper() == null) {
    throw new IllegalStateException("String_Node_Str");
  }
  final Handler handler=new Handler(Looper.myLooper());
  final AuthenticationServer server=SyncManager.getAuthServer();
  Future<?> authenticateRequest=SyncManager.NETWORK_POOL_EXECUTOR.submit(new Runnable(){
    @Override public void run(){
      try {
        AuthenticateResponse result=server.authenticateUser(credentials,authUrl,credentials.shouldCreateUser());
        if (result.isValid()) {
          User user=new User(result.getRefreshToken().identity(),result.getRefreshToken(),authUrl);
          postSuccess(user);
        }
 else {
          postError(result.getError());
        }
      }
 catch (      IOException e) {
        postError(new ObjectServerError(ErrorCode.IO_EXCEPTION,e));
      }
catch (      Throwable e) {
        postError(new ObjectServerError(ErrorCode.UNKNOWN,e));
      }
    }
    private void postError(    final ObjectServerError error){
      RealmLog.info("String_Node_Str",error);
      if (callback != null) {
        handler.post(new Runnable(){
          @Override public void run(){
            callback.onError(error);
          }
        }
);
      }
    }
    private void postSuccess(    final User user){
      RealmLog.info("String_Node_Str",user);
      if (callback != null) {
        handler.post(new Runnable(){
          @Override public void run(){
            callback.onSuccess(user);
          }
        }
);
      }
    }
  }
);
  authenticateTask=new RealmAsyncTask(authenticateRequest,SyncManager.NETWORK_POOL_EXECUTOR);
  return authenticateTask;
}