NLP (from Bracken-McCormick; st_e03.gms in GLOBALLib) go Gurobi AMPL short = 1, <= 2000; var x2 := 16000, >= 1, <= 16000; var x3 := 98.1606637202749, >= 0, <= 120; var x4 := 3056.49253666295, >= 1, <= 5000; var x5 := 2000, >= 0, <= 2000; var x6 := 90.616089806548, >= 85, <= 93; var x7 := 94.1877644852735, >= 90, <= 95; var x8 := 10.4111183194552, >= 3, <= 12; var x9 := 2.61694885280788, >= 1.2, <= 4; var x10 := 149.56329345582, >= 145, <= 162; minimize obj: -0.063*x4*x7 + 5.04*x1 + 0.035*x2 + 10*x3 + 3.36*x5; subject to e1: x1 - 1.22*x4 + x5 = 0; e2: x9 + 0.222*x10 = 35.82; e3: 3*x7 - x10 = 133; e4: 0.038*x8^2 - 1.098*x8 - 0.325*x6 + x7 = 57.425; e5: x4*x9*x6 + 1000*x3*x6 - 98000*x3 = 0; e6: -x1*x8 + x2 + x5 = 0; e7: 0.13167*x8*x1 + 1.12*x1 - 0.00667*x8^2*x1 - x4 >= 0; ]]>