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 
                                  int getNegative(int target) {
          int negative;
          do {
              negative = negatives[negpos];
              negpos = (negpos + 1) % negatives.length;
          } while (target == negative);
          return negative;
      } 
                              #location 5 
                              #vulnerability type THREAD_SAFETY_VIOLATION