1 0 TAO, Function value: 0.155766, Residual: 1.23421 2 0 TAO, Function value: 0.0322952, Residual: 0.727598 3 1 TAO, Function value: 0.0139606, Residual: 0.773905 4 2 TAO, Function value: 0.000735087, Residual: 0.151867 5 3 TAO, Function value: 2.37569e-06, Residual: 0.00829643 6 4 TAO, Function value: 3.36218e-11, Residual: 3.1131e-05 7 5 TAO, Function value: 6.77586e-21, Residual: 4.41938e-10 8Tao Object: 1 MPI process 9 type: bntr 10 CG steps: 0 11 Newton steps: 5 12 Scaled gradient steps: 0 13 Gradient steps: 0 14 KSP termination reasons: 15 atol: 0 16 rtol: 2 17 ctol: 1 18 negc: 2 19 dtol: 0 20 iter: 0 21 othr: 0 22 TaoLineSearch Object: 1 MPI process 23 type: more-thuente 24 maximum function evaluations=30 25 tolerances: ftol=0.0001, rtol=1e-10, gtol=0.9 26 total number of function evaluations=0 27 total number of gradient evaluations=0 28 total number of function/gradient evaluations=0 29 Termination reason: 0 30 KSP Object: (tao_bnk_) 1 MPI process 31 type: stcg 32 maximum iterations=10000, initial guess is zero 33 tolerances: relative=1e-05, absolute=1e-50, divergence=10000. 34 left preconditioning 35 using UNPRECONDITIONED norm type for convergence test 36 PC Object: (tao_bnk_) 1 MPI process 37 type: none 38 linear system matrix = precond matrix: 39 Mat Object: 1 MPI process 40 type: shell 41 rows=2, cols=2 42 total KSP iterations: 8 43 Active Set subset type: subvec 44 convergence tolerances: gatol=1e-08, steptol=0., gttol=0. 45 Residual in Function/Gradient:=4.41938e-10 46 Objective value=6.77586e-21 47 total number of iterations=5, (max: 50) 48 total number of function/gradient evaluations=17, (max: 4000) 49 total number of Hessian evaluations=6 50 Solution converged: ||g(X)|| <= gatol 51