- if Tree.is_leaf tree tfnode
- then ()
- else NodeHash.replace run fnode (StateSet.inter qfq ql,qfr);
- if Tree.is_leaf tree tnnode
- then ()
- else NodeHash.replace run nnode (StateSet.inter qnq qr,qnr);
- tp_max asta run tree tfnode;
- tp_max asta run tree tnnode;
+ if tnode == Tree.root tree (* we must intersectt with top states *)
+ then let setq,_ = try NodeHash.find run node
+ with _ -> raise Max_fail in
+ NodeHash.replace run node
+ ((StateSet.inter (Asta.top_states_s asta) setq),StateSet.empty)
+ else ();
+ let q_rec n =
+ try NodeHash.find run n
+ with Not_found -> map_leaf asta in
+ let (qfq,qfr),(qnq,qnr) = q_rec fnode,q_rec nnode in
+ let lab = Tree.tag tree tnode in
+ let list_tr,_ = Asta.transitions_lab asta lab in (* only take query. *)
+ let set_node,_ = try NodeHash.find run node
+ with _ -> raise Max_fail in
+ let rec result = function
+ | [] -> []
+ | (q,form) :: tl ->
+ if (Formula.infer_form (qfq,qnq) (qfr,qnr) form) &&
+ (StateSet.mem q set_node)
+ then form :: (result tl)
+ else result tl in
+ let list_form = result list_tr in
+ let rec add_st (ql,qr) = function
+ | [] -> ql,qr
+ | f :: tl -> let sql,sqr = Formula.st f in
+ let ql' = StateSet.union sql ql
+ and qr' = StateSet.union sqr qr in
+ add_st (ql',qr') tl in
+ let ql,qr = add_st (StateSet.empty, StateSet.empty) list_form in
+ let qfq,qfr = try NodeHash.find run fnode
+ with | _ -> map_leaf asta
+ and qnq,qnr = try NodeHash.find run nnode
+ with | _ -> map_leaf asta in
+ begin
+ if tfnode == Tree.nil
+ then ()
+ else NodeHash.replace run fnode (StateSet.inter qfq ql,qfr);
+ if tnnode == Tree.nil
+ then ()
+ else NodeHash.replace run nnode (StateSet.inter qnq qr,qnr);
+ tp_max asta run tree tfnode;
+ tp_max asta run tree tnnode;
+ end;