1 0 SNES Function norm 84.9481 2 1 SNES Function norm 0.225121 3 2 SNES Function norm 0.000308368 4 3 SNES Function norm 1.0121e-08 5Nonlinear solve converged due to CONVERGED_FNORM_RELATIVE iterations 3 6SNES iterations = 3 7 8