Failed to load initial guess, so use a vector of all zeros.
  0 KSP Residual norm 7.07107
  1 KSP Residual norm 0.392837
  2 KSP Residual norm < 1.e-11
Linear solve converged due to CONVERGED_RTOL iterations 2
KSP Object: 1 MPI process
  type: cg
  maximum iterations=10, initial guess is zero
  tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
  left preconditioning
  using PRECONDITIONED norm type for convergence test
PC Object: 1 MPI process
  type: none
  linear system matrix, followed by the matrix used to construct the preconditioner:
  Mat Object: A 1 MPI process
    type: seqaij
    rows=4, cols=4
    total: nonzeros=10, allocated nonzeros=10
    total number of mallocs used during MatSetValues calls=0
      not using I-node routines
  Mat Object: 1 MPI process
    type: normalh
    rows=4, cols=4
KSP type: cg
Number of iterations =   2
Residual norm 4.44089e-16