Solves Stokes problem.
CheckGeometryAndReverseCells() : Number of inverted cells 24
Exact Solution
Vec Object: 1 MPI processes
  type: seq
-1.5
-0.5
0.5
-0.5
1.5
0.5
-0.5
0.5
-0.5
0.5
-0.5
-0.5
0.5
0.5
0.8125
1.125
-1.0625
0.5
0.5
-0.5
0.8125
0.625
0.1875
1.125
0.8125
-0.375
0.8125
0.8125
-1.0625
0.8125
0.3125
0.1875
0.3125
0.8125
-0.8125
0.3125
0.3125
-0.0625
0.3125
0.625
-0.8125
0.125
0.3125
-0.375
0.3125
0.125
-0.0625
0.5625
1.125
-0.5625
0.625
0.3125
-0.375
Initial Residual
Vec Object: 1 MPI processes
  type: seq
0.0130208
0.00677083
-0.00104167
-0.0395833
0.0276042
0.0078125
0.0145833
-0.0192708
0.0046875
-0.0270833
-0.0359375
-0.03125
-0.0505208
0.0442708
0.0479167
0.0375
-0.08125
0.00833333
-0.158333
0.05
0.10625
0.0958333
0.235417
-0.116667
0.1375
-0.25
-0.09375
0.0270833
-0.114583
0.0583333
0.0770833
-0.0916667
0.0166667
0.0333333
-0.0166667
-0.00208333
-0.025
0.01875
-0.0208333
0.08125
-0.0375
0.0229167
-0.0583333
0.135417
0.0104167
-0.0729167
-0.127083
0.0395833
0.60625
-0.25625
-0.0625
0.01875
-0.0125
L_2 Residual: 0.868386
[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Petsc has generated inconsistent data
[0]PETSC ERROR: The null space calculated for the system operator is invalid.
[0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
[0]PETSC ERROR: Petsc Release Version 3.7.3, Jul, 24, 2016 
[0]PETSC ERROR: ./fmcm on a x64-dbg-clang named Fredericos-MacBook-Air.local by frederico Sun Aug 14 20:35:15 2016
[0]PETSC ERROR: Configure options --PETSC_ARCH=x64-dbg-clang --download-chaco=yes --download-ctetgen=yes --download-f2cblaslapack=yes --download-hdf5=yes --download-hypre=yes --download-metis=yes --download-mpich=yes --download-parmetis=yes --download-superlu=yes --download-superlu_dist=yes --download-triangle=yes --with-cc=gcc --with-cxx=g++ --with-debugging=1 --with-fc=0 --with-valgrind=1
[0]PETSC ERROR: #1 main() line 114 in /Users/frederico/FMCM/code/fmcm.c
[0]PETSC ERROR: PETSc Option Table entries:
[0]PETSC ERROR: -dim 3
[0]PETSC ERROR: -fieldsplit_pressure_inner_ksp_type preonly
[0]PETSC ERROR: -fieldsplit_pressure_inner_pc_type jacobi
[0]PETSC ERROR: -fieldsplit_pressure_ksp_rtol 1e-10
[0]PETSC ERROR: -fieldsplit_pressure_pc_type jacobi
[0]PETSC ERROR: -fieldsplit_pressure_upper_ksp_type preonly
[0]PETSC ERROR: -fieldsplit_pressure_upper_pc_type jacobi
[0]PETSC ERROR: -fieldsplit_velocity_ksp_type preonly
[0]PETSC ERROR: -fieldsplit_velocity_pc_type lu
[0]PETSC ERROR: -gmsh_file /Users/frederico/FMCM/examples/box29_small.msh
[0]PETSC ERROR: -hom_dirichlet_id 29
[0]PETSC ERROR: -interpolate 1
[0]PETSC ERROR: -ksp_atol 1.e-10
[0]PETSC ERROR: -ksp_converged_reason
[0]PETSC ERROR: -ksp_monitor_short
[0]PETSC ERROR: -ksp_type fgmres
[0]PETSC ERROR: -log_view
[0]PETSC ERROR: -pc_fieldsplit_schur_factorization_type full
[0]PETSC ERROR: -pc_fieldsplit_type schur
[0]PETSC ERROR: -pc_type fieldsplit
[0]PETSC ERROR: -pres_petscspace_order 1
[0]PETSC ERROR: -save_solution_vtk /Users/frederico/FMCM_Results/box/stokes_test_box_gmsh_ms_simple.vtu
[0]PETSC ERROR: -set_null_space
[0]PETSC ERROR: -snes_converged_reason
[0]PETSC ERROR: -snes_monitor_short
[0]PETSC ERROR: -snes_view
[0]PETSC ERROR: -stokes
[0]PETSC ERROR: -stokes_viscosity 1.0
[0]PETSC ERROR: -test_ms
[0]PETSC ERROR: -vel_petscspace_order 2
[0]PETSC ERROR: ----------------End of Error Message -------send entire error message to petsc-maint@mcs.anl.gov----------
application called MPI_Abort(MPI_COMM_WORLD, 77) - process 0
[unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=77
:
system msg for write_line failure : Bad file descriptor