1iter = 0, Function value 1.67039, Residual: 0.47529 2iter = 1, Function value 1.57666, Residual: 0.422933 3iter = 2, Function value 1.52572, Residual: 0.272034 4iter = 3, Function value 1.51605, Residual: 0.212836 5iter = 4, Function value 1.50956, Residual: 0.0872559 6iter = 5, Function value 1.50755, Residual: 0.111795 7iter = 6, Function value 1.50661, Residual: 0.101881 8iter = 7, Function value 1.50599, Residual: 0.0561292 9iter = 8, Function value 1.50572, Residual: 0.0225933 10iter = 9, Function value 1.50568, Residual: 0.00879044 11iter = 10, Function value 1.50567, Residual: 0.00373432 12iter = 11, Function value 1.50566, Residual: 0.00223859 13iter = 12, Function value 1.50566, Residual: 0.00132448 14iter = 13, Function value 1.50566, Residual: 0.000664802 15iter = 14, Function value 1.50566, Residual: 0.00049271 16iter = 15, Function value 1.50566, Residual: 0.00027325 17iter = 16, Function value 1.50566, Residual: 0.000175821 18iter = 17, Function value 1.50566, Residual: 0.000164743 19iter = 18, Function value 1.50566, Residual: 7.17989e-05 20