setup done: grid  Mx,My = 81,81  with spacing  dx,dy = 0.0500,0.0500
  0 SNES Function norm 8.91139 
    0 KSP Residual norm 7.66854 
    1 KSP Residual norm 0.0817114 
    2 KSP Residual norm 0.0014303 
    3 KSP Residual norm 4.09214e-05 
  1 SNES Function norm 1.79664 
    0 KSP Residual norm 3.66508 
    1 KSP Residual norm 0.0254715 
    2 KSP Residual norm 0.000698771 
    3 KSP Residual norm 1.52442e-05 
  2 SNES Function norm 0.965357 
    0 KSP Residual norm 2.0992 
    1 KSP Residual norm 0.0107506 
    2 KSP Residual norm 0.000332135 
    3 KSP Residual norm 7.30506e-06 
  3 SNES Function norm 0.602599 
    0 KSP Residual norm 1.33076 
    1 KSP Residual norm 0.00851554 
    2 KSP Residual norm 0.000224731 
    3 KSP Residual norm 4.94949e-06 
  4 SNES Function norm 0.37491 
    0 KSP Residual norm 0.826408 
    1 KSP Residual norm 0.00409587 
    2 KSP Residual norm 0.000122243 
    3 KSP Residual norm 2.85825e-06 
  5 SNES Function norm 0.215489 
    0 KSP Residual norm 0.419143 
    1 KSP Residual norm 0.00291159 
    2 KSP Residual norm 8.03321e-05 
    3 KSP Residual norm 1.69582e-06 
  6 SNES Function norm 0.110008 
    0 KSP Residual norm 0.145017 
    1 KSP Residual norm 0.00102091 
    2 KSP Residual norm 2.75348e-05 
    3 KSP Residual norm 5.21408e-07 
  7 SNES Function norm 0.0509393 
    0 KSP Residual norm 0.06307 
    1 KSP Residual norm 0.000503537 
    2 KSP Residual norm 1.32709e-05 
    3 KSP Residual norm 3.31102e-07 
  8 SNES Function norm 0.00699757 
    0 KSP Residual norm 0.00485744 
    1 KSP Residual norm 3.93063e-05 
    2 KSP Residual norm 1.07492e-06 
    3 KSP Residual norm 2.17717e-08 
  9 SNES Function norm 9.21939e-08 
    0 KSP Residual norm 2.17718e-08 
    1 KSP Residual norm 8.694e-10 
    2 KSP Residual norm 2.238e-11 
    3 KSP Residual norm < 1.e-11
    4 KSP Residual norm < 1.e-11
 10 SNES Function norm < 1.e-11
errors:     av |u-uexact|  = 9.258e-05    |u-uexact|_inf = 6.695e-04
