Cycle 0:
   Number of active cells: 20
   Total number of cells: 20
   Number of degrees of freedom: 25
   13 CG iterations needed to obtain convergence.
Cycle 1:
   Number of active cells: 80
   Total number of cells: 100
   Number of degrees of freedom: 89
   17 CG iterations needed to obtain convergence.
Cycle 2:
   Number of active cells: 320
   Total number of cells: 420
   Number of degrees of freedom: 337
   29 CG iterations needed to obtain convergence.
Cycle 3:
   Number of active cells: 1280
   Total number of cells: 1700
   Number of degrees of freedom: 1313
   51 CG iterations needed to obtain convergence.
Cycle 4:
   Number of active cells: 5120
   Total number of cells: 6820
   Number of degrees of freedom: 5185
   94 CG iterations needed to obtain convergence.
Cycle 5:
   Number of active cells: 20480
   Total number of cells: 27300
   Number of degrees of freedom: 20609
   180 CG iterations needed to obtain convergence.