DM Object: box 1 MPI processes
  type: plex
box in 2 dimensions:
  0-cells: 9
  1-cells: 16
  2-cells: 8
Labels:
  celltype: 3 strata with value/size (0 (9), 3 (8), 1 (16))
  depth: 3 strata with value/size (0 (9), 1 (16), 2 (8))
  marker: 1 strata with value/size (1 (16))
  Face Sets: 1 strata with value/size (1 (8))
Initial guess
L_2 Error: < 1.0e-11
Initial Residual
L_2 Residual: 0.
Au - b = Au + F(0)
Linear L_2 Residual: 0.
Solution boundary integral: 3.333