atol=1e-50, rtol=1e-08, stol=1e-08, maxit=50, maxf=10000 0 SNES Function norm 5.41468 1 SNES Function norm 3.95851 2 SNES Function norm 2.56984 3 SNES Function norm 1.59392 4 SNES Function norm 0.00931023 5 SNES Function norm 5.02911e-07 6 SNES Function norm < 1.e-11 SNES Object: 1 MPI process type: newtontrdc Trust region tolerance 1e-12 (-snes_trtol) eta1=0.001, eta2=0.25, eta3=0.75 delta0=0.1, t1=0.25, t2=2., deltaM=0.5 maximum iterations=50, maximum function evaluations=10000 tolerances: relative=1e-08, absolute=1e-50, solution=1e-08 total number of linear solver iterations=6 total number of function evaluations=7 norm schedule ALWAYS KSP Object: 1 MPI process 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: 1 MPI process type: ilu out-of-place factorization 0 levels of fill tolerance for zero pivot 2.22045e-14 matrix ordering: natural factor fill ratio given 1., needed 1. Factored matrix follows: Mat Object: 1 MPI process type: seqaij rows=5, cols=5 package used to perform factorization: petsc total: nonzeros=11, allocated nonzeros=11 not using I-node routines linear system matrix = precond matrix: Mat Object: 1 MPI process type: seqaij rows=5, cols=5 total: nonzeros=11, allocated nonzeros=15 total number of mallocs used during MatSetValues calls=0 not using I-node routines number of SNES iterations = 6 Norm of error 1.01208e-13, Iterations 6