Fun_sat.MakeA functional SAT solver implementation.
exception Sat of texception Unsat of Explanation.texception I_dont_know of tval assume : t -> Expr.gformula -> Explanation.t -> tval assume_th_elt : t -> Expr.th_elt -> Explanation.t -> tval pred_def : t -> Expr.t -> string -> Explanation.t -> Loc.t -> tval unsat : t -> Expr.gformula -> Explanation.tval get_unknown_reason : t -> Sat_solver_sig.unknown_reason option