let rec dummy_var =
{ vid = -101;
pa = dummy_atom;
na = dummy_atom;
level = -1;
reason = None;
weight = -1.;
seen = false;
vpremise = [] }
and dummy_atom =
{ var = dummy_var;
lit = dummy_lit;
watched = {Vec.dummy=dummy_clause; data=[||]; sz=0};
neg = dummy_atom;
is_true = false;
aid = -102 }
and dummy_clause =
{ name = "";
atoms = {Vec.dummy=dummy_atom; data=[||]; sz=0};
activity = -1.;
removed = false;
learnt = false;
cpremise = [] }