+02, ||grad||_infty = 1.83e-01
Iter   220, f(x) = 5.865713e+02, ||grad||_infty = 3.90e-01
Iter   230, f(x) = 5.865528e+02, ||grad||_infty = 8.10e-01
Iter   240, f(x) = 5.865372e+02, ||grad||_infty = 1.05e-01
Iter   250, f(x) = 5.865300e+02, ||grad||_infty = 2.82e-01
Iter   260, f(x) = 5.865229e+02, ||grad||_infty = 1.66e-01
Iter   270, f(x) = 5.865135e+02, ||grad||_infty = 1.06e-01
Iter   280, f(x) = 5.865011e+02, ||grad||_infty = 8.57e-02
Iter   290, f(x) = 5.864903e+02, ||grad||_infty = 3.23e-01
Iter   30