output: #fixed code
                                  protected void deleteNode(Handle handle) throws IOException {
          if (cachesize != 0) {
              Node n = (Node) cache.get(handle);
              if (n != null) synchronized (cache) {
                  cacheScore.deleteScore(handle);
                  cache.remove(handle);
              }
          }
          dispose(handle);
      }
input: #vulnerable code 
                                  protected void deleteNode(Handle handle) throws IOException {
          if (cachesize != 0) {
              Node n = (Node) cache.get(handle);
              if (n != null) {
                  cacheScore.deleteScore(handle);
                  cache.remove(handle);
              }
          }
          dispose(handle);
      } 
                              #location 9 
                              #vulnerability type THREAD_SAFETY_VIOLATION