YES
O(n^2)
TRS:
 {-(-(neg(x), neg(x)), -(neg(y), neg(y))) -> -(-(x, y), -(x, y))}
 DUP: We consider a non-duplicating system.
  Trs:
   {-(-(neg(x), neg(x)), -(neg(y), neg(y))) -> -(-(x, y), -(x, y))}
  Matrix Interpretation:
   Interpretation class: triangular
         [X1]    [1 0][X1]   [0]
   [neg]([X0]) = [0 1][X0] + [1]
   
       [X3]  [X1]    [1 0][X3]   [1 1][X1]   [0]
   [-]([X2], [X0]) = [0 1][X2] + [0 0][X0] + [0]
   
   
   Qed