0 TAO,  Function value: 14.6462,  Residual: 14.2702 
  1 TAO,  Function value: 4.22724,  Residual: 5.29308e-05 
  2 TAO,  Function value: 4.22724,  Residual: 1.1637e-06 
J(xhat): 98.3926, predicted: 4.22724, diff 94.1653
J(xhat): 27.7686, predicted: 4.22724, diff 23.5413
J(xhat): 10.1126, predicted: 4.22724, diff 5.88533
J(xhat): 5.69858, predicted: 4.22724, diff 1.47133
J(xhat): 4.59508, predicted: 4.22724, diff 0.367834
J(xhat): 4.3192, predicted: 4.22724, diff 0.0919585
J(xhat): 4.25023, predicted: 4.22724, diff 0.0229897
J(xhat): 4.23299, predicted: 4.22724, diff 0.00574732
J(xhat): 4.22868, predicted: 4.22724, diff 0.00143671
J(xhat): 4.2276, predicted: 4.22724, diff 0.000359058
Convergence rate step 0: 2.
Convergence rate step 1: 2.
Convergence rate step 2: 2.
Convergence rate step 3: 2.
Convergence rate step 4: 2.
Convergence rate step 5: 1.99999
Convergence rate step 6: 2.00003
Convergence rate step 7: 2.00012
Convergence rate step 8: 2.00048