Model vector
   Variables
      x[1:10]
      obj
   End Variables

   Intermediates
      y[1]    = x[1]^2
      y[2:10] = y[1:9] + x[2:10]^2

      z[1]    = x[1]
      z[2:10] = z[1:9] + x[2:10]
   End Intermediates

   Equations
      y[10] <= 1
      obj = -z[10]
   End Equations
End Model