Dynare error codes ' DYNARE_SOLVE (solve_algo=2|4): number of blocks = 7'

Hi, does any one be familiar with Dynare error codes? I am trying to run a mod file and steady state cannot be computed. If I run model_diagnostics(M_,options_,oo_), MATLAB gives me the following:

DYNARE_SOLVE (solve_algo=2|4): number of blocks = 7
DYNARE_SOLVE (solve_algo=2|4): solving block 6, of size 1
DYNARE_SOLVE (solve_algo=2|4): solving block 5, of size 1
DYNARE_SOLVE (solve_algo=2|4): solving block 4, of size 18

What does this mean? Thanks for your advice and help!

Some algorithms split the problem into blocks based on the Dulmage-Mendelsohn decomposition. The debugging info here states the total number of blocks and the size of each block.