  0 TAO,  Function value: 0.153666,  Residual: 1.22223
  0 TAO,  Function value: 0.0316957,  Residual: 0.71596
  1 TAO,  Function value: 0.0134763,  Residual: 0.746393
  2 TAO,  Function value: 0.000704249,  Residual: 0.146571
  3 TAO,  Function value: 2.16378e-06,  Residual: 0.00781675
  4 TAO,  Function value: 2.84204e-11,  Residual: 2.82609e-05
  5 TAO,  Function value: 4.93222e-21,  Residual: 3.72296e-10
Tao Object: 1 MPI process
  type: bntr
    Tao Object: (tao_bnk_cg_) 1 MPI process
      type: bncg
        CG Type: ssml_bfgs
        Skipped Stepdirection Updates: 0
        Scaled gradient steps: 0
        Pure gradient steps: 0
        Not a descent direction: 0
        Line search fails: 0
        Matrix has not been preallocated yet
      TaoLineSearch Object: (tao_bnk_cg_) 1 MPI process
        type: more-thuente
        maximum function evaluations=30
        tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9
        total number of function evaluations=0
        total number of gradient evaluations=0
        total number of function/gradient evaluations=0
        Termination reason: CONTINUE_ITERATING
      convergence tolerances: gatol=1e-08,       grtol=1e-08, steptol=0.,       gttol=0.
      Residual in Function/Gradient:=0.
      Objective value=0.
      total number of iterations=0,                              (max: 2000)
      Solver never run
    CG steps: 0
    Newton steps: 5
    Scaled gradient steps: 0
    Gradient steps: 0
    KSP termination reasons:
      atol: 0
      rtol: 2
      ctol: 2
      negc: 1
      dtol: 0
      iter: 0
      othr: 0
  TaoLineSearch Object: 1 MPI process
    type: more-thuente
    maximum function evaluations=30
    tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9
    total number of function evaluations=0
    total number of gradient evaluations=0
    total number of function/gradient evaluations=0
    Termination reason: CONTINUE_ITERATING
  KSP Object: (tao_bnk_) 1 MPI process
    type: stcg
    maximum iterations=10000, initial guess is zero
    tolerances: relative=1e-05, absolute=1e-50, divergence=10000.
    left preconditioning
    using UNPRECONDITIONED norm type for convergence test
  PC Object: (tao_bnk_) 1 MPI process
    type: none
    linear system matrix, which is also used to construct the preconditioner:
    Mat Object: 1 MPI process
      type: shell
      rows=2, cols=2
  total KSP iterations: 8
  convergence tolerances: gatol=1e-08,   grtol=1e-08, steptol=0.,   gttol=0.
  Residual in Function/Gradient:=3.72296e-10
  Objective value=4.93222e-21
  total number of iterations=5,                          (max: 50)
  total number of function/gradient evaluations=17,      (max: unlimited)
  total number of Hessian evaluations=6
  Solution converged:    ||g(X)|| <= gatol
