DM Object: Mesh 1 MPI processes
  type: plex
Mesh in 2 dimensions:
  0-cells: 16
  1-cells: 24
  2-cells: 9
Labels:
  marker: 4 strata with value/size (4 (7), 2 (7), 1 (7), 3 (7))
  Face Sets: 4 strata with value/size (4 (3), 2 (3), 1 (3), 3 (3))
  depth: 3 strata with value/size (0 (16), 1 (24), 2 (9))
  markerBottom: 1 strata with value/size (1 (7))
  markerRight: 1 strata with value/size (1 (7))
  markerTop: 1 strata with value/size (1 (7))
  markerLeft: 1 strata with value/size (1 (7))
  celltype: 3 strata with value/size (4 (9), 0 (16), 1 (24))
Integral of pressure: 0.
SNES Object: 1 MPI processes
  type: newtonls
  maximum iterations=50, maximum function evaluations=10000
  tolerances: relative=1e-08, absolute=1e-50, solution=1e-08
  total number of linear solver iterations=4
  total number of function evaluations=3
  norm schedule ALWAYS
  SNESLineSearch Object: 1 MPI processes
    type: bt
      interpolation: cubic
      alpha=1.000000e-04
    maxstep=1.000000e+08, minlambda=1.000000e-12
    tolerances: relative=1.000000e-08, absolute=1.000000e-15, lambda=1.000000e-08
    maximum iterations=40
  KSP Object: 1 MPI processes
    type: gmres
      restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement
      happy breakdown tolerance 1e-30
    maximum iterations=10000, initial guess is zero
    tolerances:  relative=1e-12, absolute=1e-10, divergence=10000.
    left preconditioning
    using PRECONDITIONED norm type for convergence test
  PC Object: 1 MPI processes
    type: fieldsplit
      FieldSplit with Schur preconditioner, factorization FULL
      Preconditioner for the Schur complement formed from A11
      Split info:
      Split number 0 Defined by IS
      Split number 1 Defined by IS
      KSP solver for A00 block
        KSP Object: (fieldsplit_velocity_) 1 MPI processes
          type: gmres
            restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement
            happy breakdown tolerance 1e-30
          maximum iterations=10000, initial guess is zero
          tolerances:  relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using PRECONDITIONED norm type for convergence test
        PC Object: (fieldsplit_velocity_) 1 MPI processes
          type: lu
            out-of-place factorization
            tolerance for zero pivot 2.22045e-14
            matrix ordering: nd
            factor fill ratio given 5., needed 1.25
              Factored matrix follows:
                Mat Object: 1 MPI processes
                  type: seqaij
                  rows=16, cols=16
                  package used to perform factorization: petsc
                  total: nonzeros=190, allocated nonzeros=190
                    using I-node routines: found 9 nodes, limit used is 5
          linear system matrix followed by preconditioner matrix:
          Mat Object: 1 MPI processes
            type: seqaij
            rows=16, cols=16
            total: nonzeros=152, allocated nonzeros=152
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 12 nodes, limit used is 5
          Mat Object: (fieldsplit_velocity_) 1 MPI processes
            type: seqaij
            rows=16, cols=16
            total: nonzeros=152, allocated nonzeros=152
            total number of mallocs used during MatSetValues calls=0
              using I-node routines: found 12 nodes, limit used is 5
      KSP solver for S = A11 - A10 inv(A00) A01 
        KSP Object: (fieldsplit_pressure_) 1 MPI processes
          type: gmres
            restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement
            happy breakdown tolerance 1e-30
          maximum iterations=10000, initial guess is zero
          tolerances:  relative=1e-05, absolute=1e-50, divergence=10000.
          left preconditioning
          using PRECONDITIONED norm type for convergence test
        PC Object: (fieldsplit_pressure_) 1 MPI processes
          type: lu
            out-of-place factorization
            tolerance for zero pivot 2.22045e-14
            matrix ordering: nd
            factor fill ratio given 5., needed 1.
              Factored matrix follows:
                Mat Object: 1 MPI processes
                  type: seqaij
                  rows=9, cols=9
                  package used to perform factorization: petsc
                  total: nonzeros=9, allocated nonzeros=9
                    not using I-node routines
          linear system matrix followed by preconditioner matrix:
          Mat Object: (fieldsplit_pressure_) 1 MPI processes
            type: schurcomplement
            rows=9, cols=9
              has attached null space
              Schur complement A11 - A10 inv(A00) A01
              A11
                Mat Object: 1 MPI processes
                  type: seqaij
                  rows=9, cols=9
                  total: nonzeros=9, allocated nonzeros=9
                  total number of mallocs used during MatSetValues calls=0
                    has attached null space
                    not using I-node routines
              A10
                Mat Object: 1 MPI processes
                  type: seqaij
                  rows=9, cols=16
                  total: nonzeros=48, allocated nonzeros=48
                  total number of mallocs used during MatSetValues calls=0
                    not using I-node routines
              KSP of A00
                KSP Object: (fieldsplit_velocity_) 1 MPI processes
                  type: gmres
                    restart=30, using Classical (unmodified) Gram-Schmidt Orthogonalization with no iterative refinement
                    happy breakdown tolerance 1e-30
                  maximum iterations=10000, initial guess is zero
                  tolerances:  relative=1e-05, absolute=1e-50, divergence=10000.
                  left preconditioning
                  using PRECONDITIONED norm type for convergence test
                PC Object: (fieldsplit_velocity_) 1 MPI processes
                  type: lu
                    out-of-place factorization
                    tolerance for zero pivot 2.22045e-14
                    matrix ordering: nd
                    factor fill ratio given 5., needed 1.25
                      Factored matrix follows:
                        Mat Object: 1 MPI processes
                          type: seqaij
                          rows=16, cols=16
                          package used to perform factorization: petsc
                          total: nonzeros=190, allocated nonzeros=190
                            using I-node routines: found 9 nodes, limit used is 5
                  linear system matrix followed by preconditioner matrix:
                  Mat Object: 1 MPI processes
                    type: seqaij
                    rows=16, cols=16
                    total: nonzeros=152, allocated nonzeros=152
                    total number of mallocs used during MatSetValues calls=0
                      using I-node routines: found 12 nodes, limit used is 5
                  Mat Object: (fieldsplit_velocity_) 1 MPI processes
                    type: seqaij
                    rows=16, cols=16
                    total: nonzeros=152, allocated nonzeros=152
                    total number of mallocs used during MatSetValues calls=0
                      using I-node routines: found 12 nodes, limit used is 5
              A01
                Mat Object: 1 MPI processes
                  type: seqaij
                  rows=16, cols=9
                  total: nonzeros=48, allocated nonzeros=48
                  total number of mallocs used during MatSetValues calls=0
                    using I-node routines: found 12 nodes, limit used is 5
          Mat Object: (fieldsplit_pressure_) 1 MPI processes
            type: seqaij
            rows=9, cols=9
            total: nonzeros=9, allocated nonzeros=9
            total number of mallocs used during MatSetValues calls=0
              not using I-node routines
    linear system matrix followed by preconditioner matrix:
    Mat Object: 1 MPI processes
      type: seqaij
      rows=25, cols=25
      total: nonzeros=257, allocated nonzeros=257
      total number of mallocs used during MatSetValues calls=0
        has attached null space
        not using I-node routines
    Mat Object: 1 MPI processes
      type: seqaij
      rows=25, cols=25
      total: nonzeros=257, allocated nonzeros=257
      total number of mallocs used during MatSetValues calls=0
        not using I-node routines
Number of SNES iterations=4
L_2 Error: 0.0419 [0.000986, 0.0418]
Integral of pressure: 0.
