------------ Good dominating set-----------
    1  1
------------ Value of size too big -------
    1  0
------------ Value of size too small ------
    1  0
------------ Vertex number negative -------
    1  0
------------ Vertex number too big --------
    1  0
------------ NOT a dominating set ---------
    1  0
------------ Incomplete dominating set ----
*** Error- missing certificate vertex   2 of   2
    1  0
------------ Continue after bad dom. set --
    1  0
    2  1
