Model tp044 ! Source version 1 Variables x[1:4] = 0, >= 0 obj End Variables Equations 8 - x[1] - 2*x[2] >= 0 12 - 4*x[1] - x[2] >= 0 12 - 3*x[1] - 4*x[2] >= 0 8 - 2*x[3] - x[4] >= 0 8 - x[3] - 2*x[4] >= 0 5 - x[3] - x[4] >= 0 obj = x[1] - x[2] - x[3] - x[1]*x[3] & + x[1]*x[4] + x[2]*x[3] - x[2]*x[4] ! best known objective = -15 ! begin of best known solution ! x[1] = 0 ! x[2] = 3 ! x[3] = 0 ! x[4] = 4 ! end of best known solution End Equations End Model