0 TAO, Function value: 1.95262, Residual: 0.794468 0 TAO, Function value: 0.970661, Residual: 0.228227 1 TAO, Function value: 0.892481, Residual: 0.247462 2 TAO, Function value: 0.853749, Residual: 0.0215901 3 TAO, Function value: 0.852106, Residual: 0.0319342 4 TAO, Function value: 0.849969, Residual: 0.00138967 5 TAO, Function value: 0.849937, Residual: 9.77977e-05 6 TAO, Function value: 0.849937, Residual: 3.47414e-08 7 TAO, Function value: 0.849937, Residual: 4.34207e-14 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 Active Set subset type: subvec 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: 7 Scaled gradient steps: 0 Gradient steps: 0 KSP termination reasons: atol: 0 rtol: 4 ctol: 3 negc: 0 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 using variable bounds 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: seqdense rows=10, cols=10 total: nonzeros=100, allocated nonzeros=100 total number of mallocs used during MatSetValues calls=0 total KSP iterations: 48 Active Set subset type: subvec convergence tolerances: gatol=1e-08, grtol=1e-08,steptol=0., gttol=0. Residual in Function/Gradient:=4.34207e-14 Objective value=0.849937 total number of iterations=7, (max: 50) total number of function/gradient evaluations=21, (max: unlimited) total number of Hessian evaluations=8 Solution converged: ||g(X)|| <= gatol Vec Object: 1 MPI process type: seq 2. 2.88134 2. 2.79477 2. 2.68143 2. 2.52676 2. 2.30725 2. 1.99477 2. 1.59983 2. 1.22992 2. 0.984687 2. 0.860197