output: #fixed code
                                  Model(Matrix wi,
            Matrix wo,
            Args args,
            int seed) {
          hidden_ = new Vector(args.dim);
          output_ = new Vector(wo.m_);
          grad_ = new Vector(args.dim);
          random = new Random(seed);
          wi_ = wi;
          wo_ = wo;
          args_ = args;
          isz_ = wi.m_;
          osz_ = wo.m_;
          hsz_ = args.dim;
          negpos = 0;
          loss_ = 0.0f;
          nexamples_ = 1;
      }
input: #vulnerable code 
                                  float binaryLogistic(int target, boolean label, float lr) {
          float score = sigmoid(wo_.dotRow(hidden_, target));
          float alpha = lr * (label ? 1f : 0f - score);
          grad_.addRow(wo_, target, alpha);
          synchronized (this) {
              wo_.addRow(hidden_, target, alpha);
          }
          if (label) {
              return -log(score);
          } else {
              return -log(1.0f - score);
          }
      } 
                              #location 6 
                              #vulnerability type THREAD_SAFETY_VIOLATION