1iter = 0, Function value 1.67039, Residual: 0.47529 2iter = 1, Function value 1.57666, Residual: 0.422933 3iter = 2, Function value 1.52136, Residual: 0.22552 4iter = 3, Function value 1.51856, Residual: 0.274967 5iter = 4, Function value 1.50977, Residual: 0.080598 6iter = 5, Function value 1.50812, Residual: 0.0530987 7iter = 6, Function value 1.50671, Residual: 0.0692294 8iter = 7, Function value 1.50625, Residual: 0.0817542 9iter = 8, Function value 1.50582, Residual: 0.0199899 10iter = 9, Function value 1.5057, Residual: 0.00900502 11iter = 10, Function value 1.50567, Residual: 0.00462197 12iter = 11, Function value 1.50567, Residual: 0.00563722 13iter = 12, Function value 1.50566, Residual: 0.00119864 14iter = 13, Function value 1.50566, Residual: 0.000827116 15iter = 14, Function value 1.50566, Residual: 0.000442306 16iter = 15, Function value 1.50566, Residual: 0.000475991 17iter = 16, Function value 1.50566, Residual: 0.000146946 18iter = 17, Function value 1.50566, Residual: 8.48136e-05 19