(***********************************************************************)
(*
- Time-stamp: <Last modified on 2013-04-04 21:16:04 CEST by Kim Nguyen>
+ Time-stamp: <Last modified on 2013-04-22 15:27:36 CEST by Kim Nguyen>
*)
INCLUDE "utils.ml"
end
+
+type node_summary = int
+let dummy_summary = -1
+(*
+4444444444443210
+4 -> kind
+3 -> is_left
+2 -> is_right
+1 -> has_left
+0 -> has_right
+*)
+
+let has_right (s : node_summary) : bool =
+ Obj.magic (s land 1)
+let has_left (s : node_summary) : bool =
+ Obj.magic ((s lsr 1) land 1)
+
+let is_right (s : node_summary) : bool =
+ Obj.magic ((s lsr 2) land 1)
+
+let is_left (s : node_summary) : bool =
+ Obj.magic ((s lsr 3) land 1)
+
+let kind (s : node_summary ) : Tree.NodeKind.t =
+ Obj.magic (s lsr 4)
+
+let node_summary is_left is_right has_left has_right kind =
+ ((Obj.magic kind) lsl 4) lor
+ ((Obj.magic is_left) lsl 3) lor
+ ((Obj.magic is_right) lsl 2) lor
+ ((Obj.magic has_left) lsl 1) lor
+ (Obj.magic has_right)
+
+
+
+type config = {
+ sat : StateSet.t;
+ unsat : StateSet.t;
+ todo : TransList.t;
+ summary : node_summary;
+}
+
+module Config = Hcons.Make(struct
+ type t = config
+ let equal c d =
+ c == d ||
+ c.sat == d.sat &&
+ c.unsat == d.unsat &&
+ c.todo == d.todo &&
+ c.summary == d.summary
+
+ let hash c =
+ HASHINT4((c.sat.StateSet.id :> int),
+ (c.unsat.StateSet.id :> int),
+ (c.todo.TransList.id :> int),
+ c.summary)
+end
+)
+
type t = {
id : Uid.t;
mutable states : StateSet.t;
mutable selection_states: StateSet.t;
transitions: (State.t, (QNameSet.t*SFormula.t) list) Hashtbl.t;
mutable cache2 : TransList.t Cache.N2.t;
- mutable cache6 : (TransList.t*StateSet.t) Cache.N6.t;
+ mutable cache4 : Config.t Cache.N4.t;
}
let next = Uid.make_maker ()
(Transition.make (State.dummy,QNameSet.empty, SFormula.false_))
TransList.nil
-let dummy6 = (dummy2, StateSet.empty)
+
+
+let dummy_config = Config.make { sat = StateSet.empty;
+ unsat = StateSet.empty;
+ todo = TransList.nil;
+ summary = dummy_summary
+ }
let create s ss =
selection_states = ss;
transitions = Hashtbl.create 17;
cache2 = Cache.N2.create dummy2;
- cache6 = Cache.N6.create dummy6;
+ cache4 = Cache.N4.create dummy_config;
}
in
at_exit (fun () ->
- let n6 = ref 0 in
+ let n4 = ref 0 in
let n2 = ref 0 in
Cache.N2.iteri (fun _ _ _ b -> if b then incr n2) auto.cache2;
- Cache.N6.iteri (fun _ _ _ _ _ _ _ b -> if b then incr n6) auto.cache6;
+ Cache.N4.iteri (fun _ _ _ _ _ b -> if b then incr n4) auto.cache4;
Format.eprintf "INFO: automaton %i, cache2: %i entries, cache6: %i entries\n%!"
- (auto.id :> int) !n2 !n6;
+ (auto.id :> int) !n2 !n4;
let c2l, c2u = Cache.N2.stats auto.cache2 in
- let c6l, c6u = Cache.N6.stats auto.cache6 in
+ let c4l, c4u = Cache.N4.stats auto.cache4 in
Format.eprintf "INFO: cache2: length: %i, used: %i, occupation: %f\n%!" c2l c2u (float c2u /. float c2l);
- Format.eprintf "INFO: cache6: length: %i, used: %i, occupation: %f\n%!" c6l c6u (float c6u /. float c6l)
+ Format.eprintf "INFO: cache4: length: %i, used: %i, occupation: %f\n%!" c4l c4u (float c4u /. float c4l)
);
auto
let reset a =
- a.cache2 <- Cache.N2.create dummy2;
- a.cache6 <- Cache.N6.create dummy6
+ a.cache2 <- Cache.N2.create (Cache.N2.dummy a.cache2);
+ a.cache4 <- Cache.N4.create (Cache.N4.dummy a.cache4)
let get_trans_aux a tag states =
else trs
-
+(*
let eval_form phi fcs nss ps ss is_left is_right has_left has_right kind =
let rec loop phi =
begin match SFormula.expr phi with
else if SFormula.is_false new_phi then
(acct, accs)
else
- let new_tr = Transition.make (q, lab, new_phi) in
+ let new_tr = Transition.make (q, lab, new_phi) in
(TransList.cons new_tr acct, accs)
) ltrs (TransList.nil, ss)
in
in
loop ltrs ss
+*)
+
+let simplify_atom atom pos q { Config.node=config; _ } =
+ if (pos && StateSet.mem q config.sat)
+ || ((not pos) && StateSet.mem q config.unsat) then SFormula.true_
+ else if (pos && StateSet.mem q config.unsat)
+ || ((not pos) && StateSet.mem q config.sat) then SFormula.false_
+ else atom
+
+
+let eval_form phi fcs nss ps ss summary =
+ let rec loop phi =
+ begin match SFormula.expr phi with
+ Formula.True | Formula.False -> phi
+ | Formula.Atom a ->
+ let p, b, q = Atom.node a in begin
+ match p with
+ | First_child -> simplify_atom phi b q fcs
+ | Next_sibling -> simplify_atom phi b q nss
+ | Parent | Previous_sibling -> simplify_atom phi b q ps
+ | Stay -> simplify_atom phi b q ss
+ | Is_first_child -> SFormula.of_bool (b == (is_left summary))
+ | Is_next_sibling -> SFormula.of_bool (b == (is_right summary))
+ | Is k -> SFormula.of_bool (b == (k == (kind summary)))
+ | Has_first_child -> SFormula.of_bool (b == (has_left summary))
+ | Has_next_sibling -> SFormula.of_bool (b == (has_right summary))
+ end
+ | Formula.And(phi1, phi2) -> SFormula.and_ (loop phi1) (loop phi2)
+ | Formula.Or (phi1, phi2) -> SFormula.or_ (loop phi1) (loop phi2)
+ end
+ in
+ loop phi
+let eval_trans auto fcs nss ps ss =
+ let fcsid = (fcs.Config.id :> int) in
+ let nssid = (nss.Config.id :> int) in
+ let psid = (ps.Config.id :> int) in
+ let rec loop old_config =
+ let oid = (old_config.Config.id :> int) in
+ let res =
+ let res = Cache.N4.find auto.cache4 oid fcsid nssid psid in
+ if res != dummy_config then res
+ else
+ let { sat = old_sat;
+ unsat = old_unsat;
+ todo = old_todo;
+ summary = old_summary } = old_config.Config.node
+ in
+ let sat, unsat, removed, kept, todo =
+ TransList.fold
+ (fun trs acc ->
+ let q, lab, phi = Transition.node trs in
+ let a_sat, a_unsat, a_rem, a_kept, a_todo = acc in
+ if StateSet.mem q a_sat || StateSet.mem q a_unsat then acc else
+ let new_phi =
+ eval_form phi fcs nss ps old_config old_summary
+ in
+ if SFormula.is_true new_phi then
+ StateSet.add q a_sat, a_unsat, StateSet.add q a_rem, a_kept, a_todo
+ else if SFormula.is_false new_phi then
+ a_sat, StateSet.add q a_unsat, StateSet.add q a_rem, a_kept, a_todo
+ else
+ let new_tr = Transition.make (q, lab, new_phi) in
+ (a_sat, a_unsat, a_rem, StateSet.add q a_kept, (TransList.cons new_tr a_todo))
+ ) old_todo (old_sat, old_unsat, StateSet.empty, StateSet.empty, TransList.nil)
+ in
+ (* States that have been removed from the todo list and not kept are now
+ unsatisfiable *)
+ let unsat = StateSet.union unsat (StateSet.diff removed kept) in
+ (* States that were found once to be satisfiable remain so *)
+ let unsat = StateSet.diff unsat sat in
+ let new_config = Config.make { sat; unsat; todo ; summary = old_summary } in
+ Cache.N4.add auto.cache4 oid fcsid nssid psid new_config;
+ new_config
+ in
+ if res == old_config then res else loop res
+ in
+ loop ss
(*
[add_trans a q labels f] adds a transition [(q,labels) -> f] to the
(***********************************************************************)
(*
- Time-stamp: <Last modified on 2013-04-15 17:50:33 CEST by Kim Nguyen>
+ Time-stamp: <Last modified on 2013-04-22 15:31:24 CEST by Kim Nguyen>
*)
INCLUDE "utils.ml"
DEFINE TRACE(e) = ()
END
+ let html tree node i config msg =
+ let config = config.Ata.Config.node in
+ Html.trace (T.preorder tree node) i
+ "%s<br/>sat: %a<br/>unsat: %a<br/>todo: %a<br/>"
+ msg
+ StateSet.print config.Ata.sat
+ StateSet.print config.Ata.unsat
+ (Ata.TransList.print ~sep:"<br/>") config.Ata.todo
type cache = StateSet.t Cache.N1.t
let fc = T.first_child tree node in
let ns = T.next_sibling tree node in
let tag = T.tag tree node in
- let states0 = get cache tree node in
- let trans0 = Ata.get_trans auto tag auto.Ata.states in
- let () =
- TRACE(Html.trace (T.preorder tree node) _i "Pre States: %a<br/>Pre Trans: %a<br/>"
- StateSet.print states0 (Ata.TransList.print ~sep:"<br/>") trans0)
+ let config0 =
+ let c = get cache tree node in
+ if c == Cache.N1.dummy cache then
+ Ata.Config.make
+ { c.Ata.Config.node with Ata.todo = Ata.get_trans auto tag auto.Ata.states;
+ summary = Ata.node_summary
+ (node == T.first_child tree parent) (* is_left *)
+ (node == T.next_sibling tree parent) (* is_right *)
+ (fc != T.nil) (* has_left *)
+ (ns != T.nil) (* has_right *)
+ (T.kind tree node) (* kind *)
+ }
+ else c
in
+
+ TRACE(html tree node _i config0 "Entering node");
+
let ps = get cache tree parent in
let fcs = get cache tree fc in
let nss = get cache tree ns in
- let is_left = node == T.first_child tree parent
- and is_right = node == T.next_sibling tree parent
- and has_left = fc != T.nil
- and has_right = ns != T.nil
- and kind = T.kind tree node
- in
- let trans1, states1 =
- Ata.eval_trans auto trans0
- fcs nss ps states0
- is_left is_right has_left has_right kind
- in
- let () =
- TRACE(Html.trace (T.preorder tree node) _i "TD States: %a<br/>TD Trans: %a<br/>" StateSet.print states1 (Ata.TransList.print ~sep:"<br/>") trans1)
- in
- if states1 != states0 then set cache tree node states1;
+ let config1 = Ata.eval_trans auto fcs nss ps config0 in
+
+ TRACE(html tree node _i config1 "Updating transitions");
+
+ if config0 != config1 then set cache tree node config1;
let () = loop fc in
let fcs1 = get cache tree fc in
- let trans2, states2 =
- Ata.eval_trans auto trans1
- fcs1 nss ps states1
- is_left is_right has_left has_right kind
- in
- let () =
- TRACE(Html.trace (T.preorder tree node) _i "Left BU States: %a<br/>Left BU Trans: %a<br/>" StateSet.print states2 (Ata.TransList.print ~sep:"<br/>") trans2)
- in
- if states2 != states1 then set cache tree node states2;
+ let config2 = Ata.eval_trans auto fcs1 nss ps config1 in
+
+ TRACE(html tree node _i config2 "Updating transitions (after first-child)");
+
+ if config1 != config2 then set cache tree node config2;
let () = loop ns in
- let _trans3, states3 =
- Ata.eval_trans auto trans2
- fcs1 (get cache tree ns) ps states2
- is_left is_right has_left has_right kind
- in
- let () =
- TRACE(Html.trace (T.preorder tree node) _i "Right BU States: %a<br/>Right BU Trans: %a<br/>" StateSet.print states3 (Ata.TransList.print ~sep:"<br/>") _trans3)
- in
- if states3 != states2 then set cache tree node states3;
- (*if states0 != states3 && (not !redo) then redo := true *)
- if (not !redo)
- && not (Ata.TransList.nil == _trans3)
- && (states1 != states3)
- && not (StateSet.intersect states3 auto.Ata.selection_states)
+ let config3 = Ata.eval_trans auto fcs1 (get cache tree ns) ps config2 in
+
+ TRACE(html tree node _i config3 "Updating transitions (after next-sibling)");
+
+ if config2 != config3 then set cache tree node config3;
+ (* We do set the redo flat if : *)
+ if not (
+ config0 == config3 (* did not gain any new information *)
+ || !redo (* already set *)
+ || Ata.TransList.nil == config3.Ata.Config.node.Ata.todo ) (* no more transition to check *)
then redo := true
end
in
let acc0 = loop (T.next_sibling tree node) acc in
let acc1 = loop (T.first_child tree node) acc0 in
- if StateSet.intersect (get cache tree node) auto.Ata.selection_states then
+ if StateSet.intersect (get cache tree node).Ata.Config.node.Ata.sat auto.Ata.selection_states then
node::acc1
else
acc1
loop node []
let eval auto tree node =
- let cache = Cache.N1.create StateSet.empty in
+ let cache = Cache.N1.create
+ (Ata.Config.make { Ata.sat = StateSet.empty;
+ Ata.unsat = StateSet.empty;
+ Ata.todo = Ata.TransList.nil;
+ Ata.summary = Ata.dummy_summary;
+ })
+ in
let redo = ref true in
let iter = ref 0 in
Ata.reset auto;
while !redo do
redo := false;
+ Ata.reset auto;
redo := top_down_run auto tree node cache !iter;
incr iter;
done;
projects / tatoo.git / commitdiff