Replace matching initial clauses by tautologies.
Replace matching initial clauses by tautologies.
If shouldTautologify is true for an initial clause Γ:-Δ, then it is replaced by the tautology Γ,Δ:-Γ,Δ. The resulting resolution proof has the same structure as the original proof, and will hence contain many duplicate literals originating from the new initial clauses as the new literals are not factored away.