topology 1/1
integrating 1 distinct blocks
project
projection type: lsqr
integrating 1+1+1+1 distinct blocks
solve
solving 60 dof system to machine precision using direct solver
refinement iteration 1
residual decreased to 4e-17
refinement iteration 2
residual decreased to 4e-17
refinement iteration 3
residual increased to 5e-17 (discarding)
solver returned with residual 4e-17
constrained 60/60 dofs, error 0.00e+00/area
topology 1/1
integrating 1+1 distinct blocks
solve
solving 90 dof system to machine precision using direct solver
refinement iteration 1
residual decreased to 2e-16
refinement iteration 2
residual increased to 2e-16 (discarding)
solver returned with residual 3e-16
evaluating 88%
RuntimeWarning: singular matrix
In /home/docs/checkouts/readthedocs.org/user_builds/nutils/checkouts/v6.2/nutils/warnings.py:30
topology 1/1
integrating 1 distinct blocks