what does the warning 52 infer.
 

*** WARNING #052 *** INITIAL RESIDUAL BELOW ROUND-OFF ERROR LIMIT SOLUTION ,EQ: SC1

*** WARNING #052 *** INITIAL RESIDUAL BELOW ROUND-OFF ERROR LIMIT SOLUTION ,EQ: SC2

The warnings like above. I am modeling diesel autoignition. the model is divergent. I find the warning in the .info file. Can anybody tell me What does that mean, or how can make the model convergence? Thank you very much!!