
Loading shared library <./libnonlinear_channel_flow_tractions_Newton_Stokes_GMG.debug.so>

Number of active cells: 4,096 (on 7 levels)
Number of degrees of freedom: 54,148 (33,282+4,225+16,641)

*** Timestep 0:  t=0 seconds, dt=0 seconds
   Skipping temperature solve because RHS is zero.
   Initial Newton Stokes residual = 9.30238e+11, v = 9.30238e+11, p = 0

   Solving Stokes system (GMG)... 8+0 iterations.
      Newton system information: Norm of the rhs: 9.30238e+11
      Relative nonlinear residuals (temperature, Stokes system): 0, 1
      Relative nonlinear residual (total system) after nonlinear iteration 1: 1

   Skipping temperature solve because RHS is zero.
   Solving Stokes system (GMG)... 10+0 iterations.
      Newton system information: Norm of the rhs: 8.35883e+10, Derivative scaling factor: 0
      Relative nonlinear residuals (temperature, Stokes system): 0, 0.0898569
      Relative nonlinear residual (total system) after nonlinear iteration 2: 0.0898569

   Skipping temperature solve because RHS is zero.
   Solving Stokes system (GMG)... 7+0 iterations.
      Newton system information: Norm of the rhs: 1.08226e+10, Derivative scaling factor: 0
      Relative nonlinear residuals (temperature, Stokes system): 0, 0.0116342
      Relative nonlinear residual (total system) after nonlinear iteration 3: 0.0116342

   Skipping temperature solve because RHS is zero.
   Solving Stokes system (GMG)... 4+0 iterations.
      Newton system information: Norm of the rhs: 105099, Derivative scaling factor: 0
      Relative nonlinear residuals (temperature, Stokes system): 0, 1.12981e-07
      Relative nonlinear residual (total system) after nonlinear iteration 4: 1.12981e-07

   Skipping temperature solve because RHS is zero.
   Solving Stokes system (GMG)... 8+0 iterations.
      Newton system information: Norm of the rhs: 0.672766, Derivative scaling factor: 0
      Relative nonlinear residuals (temperature, Stokes system): 0, 7.23219e-13
      Relative nonlinear residual (total system) after nonlinear iteration 5: 7.23219e-13

   Skipping temperature solve because RHS is zero.
   Switching from defect correction form of Picard to the Newton solver scheme.
   The linear solver tolerance is set to 1.12984e-06. Stabilization Preconditioner is SPD and A block is SPD.
   Solving Stokes system (GMG)... 11+0 iterations.
      Newton system information: Norm of the rhs: 0.0951387, Derivative scaling factor: 0
      Relative nonlinear residuals (temperature, Stokes system): 0, 1.02274e-13
      Relative nonlinear residual (total system) after nonlinear iteration 6: 1.02274e-13

   Skipping temperature solve because RHS is zero.
   The linear solver tolerance is set to 0.121142. Stabilization Preconditioner is SPD and A block is SPD.
   Solving Stokes system (GMG)... 1+0 iterations.
      Newton system information: Norm of the rhs: 0.0946666, Derivative scaling factor: 0.858586
      Relative nonlinear residuals (temperature, Stokes system): 0, 1.01766e-13
      Relative nonlinear residual (total system) after nonlinear iteration 7: 1.01766e-13

   Skipping temperature solve because RHS is zero.
   The linear solver tolerance is set to 0.9. Stabilization Preconditioner is SPD and A block is SPD.
   Solving Stokes system (GMG)... 1+0 iterations.
      Newton system information: Norm of the rhs: 0.0887962, Derivative scaling factor: 0.859288
      Relative nonlinear residuals (temperature, Stokes system): 0, 9.54553e-14
      Relative nonlinear residual (total system) after nonlinear iteration 8: 9.54553e-14

   Skipping temperature solve because RHS is zero.
   The linear solver tolerance is set to 0.89746. Stabilization Preconditioner is SPD and A block is SPD.
   Solving Stokes system (GMG)... 1+0 iterations.
      Newton system information: Norm of the rhs: 0.0890302, Derivative scaling factor: 0.868013
      Relative nonlinear residuals (temperature, Stokes system): 0, 9.57069e-14
      Relative nonlinear residual (total system) after nonlinear iteration 9: 9.57069e-14

   Skipping temperature solve because RHS is zero.
   The linear solver tolerance is set to 0.9. Stabilization Preconditioner is SPD and A block is SPD.
   Solving Stokes system (GMG)... 1+0 iterations.
      Newton system information: Norm of the rhs: 0.0982373, Derivative scaling factor: 0.867665
      Relative nonlinear residuals (temperature, Stokes system): 0, 1.05604e-13
      Relative nonlinear residual (total system) after nonlinear iteration 10: 1.05604e-13


WARNING: The nonlinear solver in the current timestep failed to converge.
Acting according to the parameter 'Nonlinear solver failure strategy'...
Continuing to the next timestep even though solution is not fully converged.
   Postprocessing:
     RMS, max velocity:                  1.14e-07 m/s, 1.56e-07 m/s
     Pressure min/avg/max:               -7.077e-06 Pa, 5e+08 Pa, 1e+09 Pa
     Mass fluxes through boundary parts: 0 kg/s, 0 kg/s, -3.473 kg/s, 3.473 kg/s
     Writing graphical output:           output-nonlinear_channel_flow_tractions_Newton_Stokes_GMG/solution/solution-00000

Termination requested by criterion: end time




WARNING: During this computation 1 nonlinear solver failures occurred!
