3-species kinetics problem

At t = 2.6391e-01      y =  9.899653e-01    3.470564e-05    1.000000e-02
    rootsfound[] =   0   1
At t = 4.0000e-01      y =  9.851641e-01    3.386242e-05    1.480205e-02
At t = 4.0000e+00      y =  9.055097e-01    2.240338e-05    9.446793e-02
At t = 4.0000e+01      y =  7.157952e-01    9.183486e-06    2.841956e-01
At t = 4.0000e+02      y =  4.505422e-01    3.222955e-06    5.494546e-01
At t = 4.0000e+03      y =  1.831771e-01    8.941157e-07    8.168220e-01
At t = 4.0000e+04      y =  3.898530e-02    1.621860e-07    9.610145e-01
At t = 4.0000e+05      y =  4.940118e-03    1.985735e-08    9.950599e-01
At t = 4.0000e+06      y =  5.170999e-04    2.069457e-09    9.994829e-01
At t = 2.0794e+07      y =  1.000000e-04    4.000394e-10    9.999000e-01
    rootsfound[] =   1   0
At t = 4.0000e+07      y =  5.201028e-05    2.080516e-10    9.999480e-01
At t = 4.0000e+08      y =  5.185037e-06    2.074026e-11    9.999948e-01
At t = 4.0000e+09      y =  5.193563e-07    2.077426e-12    9.999995e-01
At t = 4.0000e+10      y =  5.200076e-08    2.080030e-13    9.999999e-01

Final Statistics:
nst = 530    nfe  = 760    nsetups = 110    nfeLS = 0      nje = 13
nni = 756    ncfn = 1      netf = 22     nge = 566