(* *)
(***********************************************************************)
+INCLUDE "utils.ml"
+
module Node =
struct
type t = int
exception Over_max_fail
exception Max_fail
+
+(* Hash Consign modules *)
+
+module type Oracle_fixpoint =
+sig
+ type t = StateSet.t*StateSet.t*StateSet.t*((StateSet.elt*Formula.t) list)*QName.t
+ val equal : t -> t -> bool
+ val hash : t -> int
+end
+
+type dStateS = StateSet.t*StateSet.t
+module type Run_fixpoint =
+sig
+ type t = dStateS*dStateS*dStateS*(State.t*Formula.t) list*QName.t
+ val equal : t -> t -> bool
+ val hash : t -> int
+end
+
+module Oracle_fixpoint : Oracle_fixpoint = struct
+ type t =
+ StateSet.t*StateSet.t*StateSet.t*((StateSet.elt*Formula.t) list)*QName.t
+ let equal (s,l,r,list,t) (s',l',r',list',t') = StateSet.equal s s' &&
+ StateSet.equal l l' && StateSet.equal r r' && QName.equal t t'
+ let hash (s,l,r,list,t) =
+ HASHINT4(StateSet.hash s, StateSet.hash l, StateSet.hash r, QName.hash t)
+end
+
+let dequal (x,y) (x',y') = StateSet.equal x x' && StateSet.equal y y'
+let dhash (x,y) = HASHINT2(StateSet.hash x, StateSet.hash y)
+module Run_fixpoint : Run_fixpoint = struct
+ type t = dStateS*dStateS*dStateS*(State.t*Formula.t) list*QName.t
+ let equal (s,l,r,list,t) (s',l',r',list',t') = dequal s s' &&
+ dequal l l' && dequal r r' && QName.equal t t'
+ let hash (s,l,r,list,t) =
+ HASHINT4(dhash s, dhash l, dhash r, QName.hash t)
+end
+
+module HashOracle = Hashtbl.Make(Oracle_fixpoint)
+module HashRun = Hashtbl.Make(Run_fixpoint)
+
(* Mapped sets for leaves *)
let map_leaf asta = (Asta.bot_states_s asta, StateSet.empty)
(* Build the Oracle *)
-let rec bu_oracle asta run tree tnode =
+let rec bu_oracle asta run tree tnode hashOracle=
let node = Tree.preorder tree tnode in
if Tree.is_leaf tree tnode
then
then ()
else NodeHash.add run node (map_leaf asta)
else
- let tfnode = Tree.first_child tree tnode (* first child *)
- and tnnode = Tree.next_sibling tree tnode in (* next-sibling *)
+ let tfnode = Tree.first_child_x tree tnode
+ and tnnode = Tree.next_sibling tree tnode in
let fnode,nnode = (* their preorders *)
(Tree.preorder tree tfnode, Tree.preorder tree tnnode) in
begin
- bu_oracle asta run tree tfnode;
- bu_oracle asta run tree tnnode;
- let q_rec n = (* compute the set for child/sibling *)
- try NodeHash.find run n
- with Not_found -> map_leaf asta in
- let (_,qfr),(_,qnr) = q_rec fnode,q_rec nnode (* computed in rec call *)
- and lab = Tree.tag tree tnode in
- let _,list_tr = Asta.transitions_lab asta lab in (* only reco. tran.*)
- let rec result set flag = function (* add states which satisfy a transition *)
+ bu_oracle asta run tree tfnode hashOracle;
+ bu_oracle asta run tree tnnode hashOracle;
+ (* add states which satisfy a transition *)
+ let rec result set qfr qnr flag = function
| [] -> set,flag
| (q,form) :: tl ->
if Formula.eval_form (set,qfr,qnr) form (* evaluates the formula*)
then
if StateSet.mem q set
- then result set 0 tl
- else result (StateSet.add q set) 1 tl
- else result set 0 tl in
- let rec fix_point set_i = (* compute the fixed point of states of node *)
- let set,flag = result set_i 0 list_tr in
- if flag = 0 then set
- else fix_point set in
- NodeHash.add run node (StateSet.empty, fix_point StateSet.empty)
+ then result set qfr qnr 0 tl
+ else result (StateSet.add q set) qfr qnr 1 tl
+ else result set qfr qnr 0 tl in
+ (* compute the fixed point of states of node *)
+ let rec fix_point set_i qfr qnr list_tr t =
+ try HashOracle.find hashOracle (set_i, qfr, qnr, list_tr, t)
+ with _ ->
+ let set,flag = result set_i qfr qnr 0 list_tr in
+ HashOracle.add hashOracle (set_i,qfr,qnr,list_tr,t) (set);
+ if flag = 0
+ then set
+ else fix_point set qfr qnr list_tr t in
+ let q_rec n = (* compute the set for child/sibling *)
+ try NodeHash.find run n
+ with Not_found -> map_leaf asta in
+ let (_,qfr),(_,qnr) = q_rec fnode,q_rec nnode (* computed in rec call *)
+ and lab = Tree.tag tree tnode in
+ let _,list_tr = Asta.transitions_lab asta lab in (*only reco. tran.*)
+ NodeHash.add run node (StateSet.empty,
+ fix_point StateSet.empty qfr qnr list_tr lab)
end
-
+
(* Build the over-approx. of the maximal run *)
-let rec bu_over_max asta run tree tnode =
+let rec bu_over_max asta run tree tnode hashRun =
if (Tree.is_leaf tree tnode) (* BU_oracle has already created the map *)
then
()
else
- let tfnode = Tree.first_child tree tnode
+ let tfnode = Tree.first_child_x tree tnode
and tnnode = Tree.next_sibling tree tnode in
begin
- bu_over_max asta run tree tfnode;
- bu_over_max asta run tree tnnode;
+ bu_over_max asta run tree tfnode hashRun;
+ bu_over_max asta run tree tnnode hashRun;
let (fnode,nnode) =
(Tree.preorder tree tfnode, Tree.preorder tree tnnode)
and node = Tree.preorder tree tnode in
and _,resultr = try NodeHash.find run node
with _ -> raise Over_max_fail in
let rec result set flag = function
- | [] -> set,flag
+ | [] -> if flag = 0 then set else result set 0 list_tr
| (q,form) :: tl ->
- if Formula.infer_form (set,resultr) qf qn form (* infers the formula*)
- then if StateSet.mem q set
- then result set 0 tl
- else result (StateSet.add q set) 1 tl
- else result set 0 tl in
- let rec fix_point set_i =
- let set,flag = result set_i 0 list_tr in
- if flag = 0
- then set
- else fix_point set in
- let result_set = fix_point StateSet.empty in
+ if StateSet.mem q set
+ then result set 0 tl
+ else if Formula.infer_form (set,resultr) qf qn form
+ then result (StateSet.add q set) 1 tl
+ else result set 0 tl in
+ let result_set = result StateSet.empty 0 list_tr in
(* we keep the old recognizing states set *)
NodeHash.replace run node (result_set, resultr)
end
(* Build the maximal run *)
-let rec tp_max asta run tree tnode =
+let rec tp_max asta run tree tnode hashRun =
if (Tree.is_leaf tree tnode) (* BU_oracle has already created the map *)
then
()
else
let node = Tree.preorder tree tnode
- and tfnode = Tree.first_child tree tnode
+ and tfnode = Tree.first_child_x tree tnode
and tnnode = Tree.next_sibling tree tnode in
let (fnode,nnode) =
(Tree.preorder tree tfnode, Tree.preorder tree tnnode) in
let qf,qn = 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 self = try NodeHash.find run node
+ let (self_q,self_r) = try NodeHash.find run node
with Not_found -> raise Max_fail in
+
+ (* We must compute again accepting states from self transitions since
+ previous calls of tp_max may remove them *)
+ let rec result_q self_q queue = function (* for initializing the queue *)
+ | [] -> self_q,queue
+ | (q,form) :: tl ->
+ if (StateSet.mem q self_q)
+ then begin
+ let q_cand,_,_ = Formula.st form in
+ StateSet.iter (fun x -> Queue.push x queue) q_cand;
+ result_q (StateSet.add q self_q) queue tl;
+ end
+ else result_q self_q queue tl
+ and result_st_q self_q queue flag = function (*for computing the fixed p*)
+ | [] -> flag,queue
+ | form :: tl ->
+ if Formula.infer_form (self_q,self_r) qf qn form
+ then begin
+ let q_cand,_,_ = Formula.st form in
+ StateSet.iter (fun x -> Queue.push x queue) q_cand;
+ result_st_q self_q queue 1 tl;
+ end
+ else result_st_q self_q queue flag tl in
+ let rec comp_acc_self self_q_i queue = (* compute the fixed point *)
+ if Queue.is_empty queue
+ then self_q_i
+ else
+ let q = Queue.pop queue in
+ let list_q,_ = Asta.transitions_st_lab asta q lab in
+ let flag,queue = result_st_q self_q_i queue 0 list_q in
+ let self_q = if flag = 1 then StateSet.add q self_q_i else self_q_i in
+ comp_acc_self self_q queue in
+
+ let self,queue_init = result_q self_q (Queue.create()) list_tr in
+ let self_q = comp_acc_self self_q queue_init in
+ NodeHash.replace run node (self_q,self_r);
+ (* From now, the correct set of states is mapped to node! *)
let rec result = function
| [] -> []
| (q,form) :: tl ->
- if (Formula.infer_form self qf qn form) &&
- (StateSet.mem q set_node) (* infers & trans. can start here *)
+ if (StateSet.mem q self) && (* infers & trans. can start here *)
+ (Formula.infer_form (self_q,self_r) qf qn form)
then form :: (result tl)
- else result tl in
+ else result tl in
let list_form = result list_tr in (* tran. candidates *)
(* compute states occuring in transition candidates *)
let rec add_st (ql,qr) = function
| [] -> ql,qr
- | f :: tl -> let sql,sqr = Formula.st f in
+ | f :: tl -> let sqs,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
and qnq,qnr = try NodeHash.find run nnode
with | _ -> map_leaf asta in
begin
- if tfnode == Tree.nil
+ if tfnode == Tree.nil || Tree.is_attribute tree tnode
then ()
else NodeHash.replace run fnode (StateSet.inter qfq ql,qfr);
- if tnnode == Tree.nil
+ if tnnode == Tree.nil || Tree.is_attribute tree tnode
then ()
else NodeHash.replace run nnode (StateSet.inter qnq qr,qnr);
- tp_max asta run tree tfnode;
- tp_max asta run tree tnnode;
+ (* indeed we delete all states from self transitions! *)
+ tp_max asta run tree tfnode hashRun;
+ tp_max asta run tree tnnode hashRun;
end;
end
let compute tree asta =
let flag = 2 in (* debug *)
let size_tree = 10000 in (* todo (Tree.size ?) *)
+ let size_hcons_O = 1000 in (* todo size Hashtbl *)
+ let size_hcons_M = 1000 in (* todo size Hashtbl *)
let map = NodeHash.create size_tree in
- bu_oracle asta map tree (Tree.root tree);
+ let hashOracle = HashOracle.create(size_hcons_O) in
+ bu_oracle asta map tree (Tree.root tree) hashOracle;
+ HashOracle.clear hashOracle;
if flag > 0 then begin
- bu_over_max asta map tree (Tree.root tree);
+ let hashRun = HashRun.create(size_hcons_M) in
+ bu_over_max asta map tree (Tree.root tree) hashRun;
if flag = 2
then
- tp_max asta map tree (Tree.root tree)
- else ()
+ tp_max asta map tree (Tree.root tree) hashRun
+ else ();
+ HashRun.clear hashRun;
end
else ();
map
NodeHash.fold
(fun key set acc ->
if not(StateSet.is_empty
- (StateSet.inter (fst set) (Asta.selec_states asta)))
+ (StateSet.inter (fst set) (Asta.selec_states asta)))
then key :: acc
else acc)
run []
projects / tatoo.git / blobdiff