(***********************************************************************)
INCLUDE "utils.ml"
+INCLUDE "debug.ml"
+
open Format
open Misc
+type stats = { run : int;
+ tree_size : int;
+ cache2_access : int;
+ cache2_hit : int;
+ cache5_access : int;
+ cache5_hit : int;
+ }
+
+let cache2_hit = ref 0
+let cache2_access = ref 0
+let cache5_hit = ref 0
+let cache5_access = ref 0
+let reset_stat_counters () =
+ cache2_hit := 0;
+ cache2_access := 0;
+ cache5_hit := 0;
+ cache5_access := 0
+
+
module Make (T : Tree.S) =
struct
end
type node_status = {
+ rank : int;
sat : StateSet.t; (* States that are satisfied at the current node *)
todo : StateSet.t; (* States that remain to be proven *)
- (* For every node_status and automaton a:
- a.states - (sat U todo) = unsat *)
+ (* For every node_status and automaton a,
+ a.states - (sat U todo) = unsat *)
summary : NodeSummary.t; (* Summary of the shape of the node *)
}
(* Describe what is kept at each node for a run *)
type t = node_status
let equal c d =
c == d ||
+ c.rank == d.rank &&
c.sat == d.sat &&
c.todo == d.todo &&
c.summary == d.summary
let hash c =
- HASHINT3((c.sat.StateSet.id :> int),
+ HASHINT4(c.rank,
+ (c.sat.StateSet.id :> int),
(c.todo.StateSet.id :> int),
c.summary)
end
)
let print ppf s =
fprintf ppf
- "{ sat: %a; todo: %a; summary: _ }"
+ "{ rank: %i; sat: %a; todo: %a; summary: _ }"
+ s.node.rank
StateSet.print s.node.sat
StateSet.print s.node.todo
end
let dummy_status =
- NodeStatus.make { sat = StateSet.empty;
- todo = StateSet.empty;
- summary = NodeSummary.dummy;
- }
+ NodeStatus.make {
+ rank = -1;
+ sat = StateSet.empty;
+ todo = StateSet.empty;
+ summary = NodeSummary.dummy;
+ }
type run = {
IFDEF HTMLTRACE
THEN
-DEFINE TRACE(e) = (e)
+DEFINE IFTRACE(e) = (e)
ELSE
-DEFINE TRACE(e) = ()
+DEFINE IFTRACE(e) = ()
END
let html tree node i config msg =
let config = config.NodeStatus.node in
- Html.trace (T.preorder tree node) i
- "node: %i<br/>%s<br/>sat: %a<br/>todo: %a<br/>round: %i<br/>"
- (T.preorder tree node)
- msg
- StateSet.print config.sat
- StateSet.print config.todo
- i
+ Html.trace ~msg:msg
+ (T.preorder tree node) i
+ config.todo
+ config.sat
+
let debug msg tree node i config =
let get_form cache2 auto tag q =
let phi =
+ incr cache2_access;
Cache.N2.find cache2 (tag.QName.id :> int) (q :> int)
in
if phi == dummy_form then
(tag.QName.id :> int)
(q :> int) phi
in phi
- else phi
+ else begin
+ incr cache2_hit;
+ phi
+ end
type trivalent = False | True | Unknown
let of_bool = function false -> False | true -> True
(* Define as macros to get lazyness *)
DEFINE OR_(t1,t2) =
- let __t1 = (t1) in
match t1 with
False -> (t2)
| True -> True
| Unknown -> if (t2) == True then True else Unknown
DEFINE AND_(t1,t2) =
- let __t1 = (t1) in
match t1 with
False -> False
| True -> (t2)
let open NodeSummary in
match a.Atom.node with
| Move (m, q) ->
- let { NodeStatus.node = n_sum; _ } as sum =
+ let down, ({ NodeStatus.node = n_sum; _ } as sum) =
match m with
- `First_child -> fcs
- | `Next_sibling -> nss
- | `Parent | `Previous_sibling -> ps
- | `Stay -> ss
+ `First_child -> true, fcs
+ | `Next_sibling -> true, nss
+ | `Parent | `Previous_sibling -> false, ps
+ | `Stay -> false, ss
in
- if sum == dummy_status || StateSet.mem q n_sum.todo then
+ if sum == dummy_status
+ || (down && n_sum.rank < ss.NodeStatus.node.rank)
+ || StateSet.mem q n_sum.todo then
Unknown
else
of_bool (b == StateSet.mem q n_sum.sat)
let phi =
get_form cache2 auto tag q
in
+
let v = eval_form phi fcs nss ps old_status old_summary in
match v with
True -> StateSet.add q a_sat, a_todo
let ssid = (ss.NodeStatus.id :> int) in
let tagid = (tag.QName.id :> int) in
let res = Cache.N5.find cache5 tagid ssid fcsid nssid psid in
- if res != dummy_status then res
+ incr cache5_access;
+ if res != dummy_status then begin incr cache5_hit; res end
else let new_status = loop ss in
Cache.N5.add cache5 tagid ssid fcsid nssid psid new_status;
new_status
let top_down run =
+ let i = run.pass in
let tree = run.tree in
let auto = run.auto in
let status = run.status in
let cache2 = run.cache2 in
let cache5 = run.cache5 in
let unstable = run.unstable in
+ let states_by_rank = Ata.get_states_by_rank auto in
+ let td_todo = states_by_rank.(i) in
+ let bu_todo = if i + 1 = Array.length states_by_rank then StateSet.empty
+ else
+ states_by_rank.(i+1)
+ in
let rec loop node =
let node_id = T.preorder tree node in
- if node == T.nil || not (Bitvector.get unstable node_id) then false else begin
+ if node == T.nil (*|| not (Bitvector.get unstable node_id)*) then false
+ else begin
let parent = T.parent tree node in
let fc = T.first_child tree node in
let fc_id = T.preorder tree fc in
let status0 =
let c = unsafe_get_status status node_id in
- if c == dummy_status then
- (* first time we visit the node *)
+ if c.NodeStatus.node.rank < i then
+ (* first time we visit the node during this run *)
NodeStatus.make
- { sat = StateSet.empty;
- todo = StateSet.diff
- (Ata.get_states auto)
- (Ata.get_starting_states auto);
- summary = NodeSummary.make
- (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 *)
+ { rank = i;
+ sat = c.NodeStatus.node.sat;
+ todo = td_todo;
+ summary = let summary = c.NodeStatus.node.summary
+ in
+ if summary != NodeSummary.dummy then summary
+ else
+ NodeSummary.make
+ (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");
-
+ IFTRACE(html tree node _i status0 "Entering node");
(* get the node_statuses for the first child, next sibling and parent *)
let ps = unsafe_get_status status (T.preorder tree parent) in
let fcs = unsafe_get_status status fc_id in
let nss = unsafe_get_status status ns_id in
(* evaluate the transitions with all this statuses *)
- let status1 = eval_trans auto cache2 cache5 tag fcs nss ps status0 in
- TRACE(html tree node _i config1 "Updating transitions");
-
- (* update the cache if the status of the node changed *)
-
- if status1 != status0 then status.(node_id) <- status1;
+ let status1 =
+ if status0.NodeStatus.node.todo == StateSet.empty then status0
+ else begin
+ let status1 = eval_trans auto cache2 cache5 tag fcs nss ps status0 in
+ IFTRACE(html tree node _i status1 "Updating transitions");
+ (* update the cache if the status of the node changed *)
+ if status1 != status0 then status.(node_id) <- status1;
+ status1
+ end
+ in
(* recursively traverse the first child *)
let unstable_left = loop fc in
(* here we re-enter the node from its first child,
get the new status of the first child *)
let fcs1 = unsafe_get_status status fc_id in
(* update the status *)
- let status2 = eval_trans auto cache2 cache5 tag fcs1 nss ps status1 in
-
- TRACE(html tree node _i config2 "Updating transitions (after first-child)");
-
- if status2 != status1 then status.(node_id) <- status2;
+ let status1 = if status1.NodeStatus.node.rank < i then
+ NodeStatus.make { status1.NodeStatus.node with
+ rank = i;
+ todo = bu_todo }
+ else
+ status1
+ in
+ let status2 =
+ if status1.NodeStatus.node.todo == StateSet.empty then status1
+ else begin
+ let status2 = eval_trans auto cache2 cache5 tag fcs1 nss ps status1 in
+ IFTRACE(html tree node _i status2
+ "Updating transitions (after first-child)");
+ if status2 != status1 then status.(node_id) <- status2;
+ status2
+ end
+ in
let unstable_right = loop ns in
let nss1 = unsafe_get_status status ns_id in
- let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
-
- TRACE(html tree node _i config3 "Updating transitions (after next-sibling)");
-
- if status3 != status2 then status.(node_id) <- status3;
-
+ let status3 =
+ if status2.NodeStatus.node.todo == StateSet.empty then status2
+ else begin
+ let status3 = eval_trans auto cache2 cache5 tag fcs1 nss1 ps status2 in
+ IFTRACE(html tree node _i status3
+ "Updating transitions (after next-sibling)");
+ if status3 != status2 then status.(node_id) <- status3;
+ status3
+ end
+ in
let unstable_self =
- (* if either our left or right child is unstable or if we still have transitions
- pending, the current node is unstable *)
+ (* if either our left or right child is unstable or if we
+ still have transitions pending, the current node is
+ unstable *)
unstable_left
|| unstable_right
|| StateSet.empty != status3.NodeStatus.node.todo
in
Bitvector.unsafe_set unstable node_id unstable_self;
- TRACE((if not unstable_self then
+ IFTRACE((if not unstable_self then
Html.finalize_node
node_id
_i
- Ata.(StateSet.intersect config3.Config.node.sat auto.selection_states)));
+ Ata.(StateSet.intersect status3.NodeStatus.node.sat
+ (get_selecting_states auto))));
unstable_self
end
in
run.redo <- loop (T.root tree);
run.pass <- run.pass + 1
-(*
- let stats run =
- let count = ref 0 in
- let len = Bitvector.length run.unstable in
- for i = 0 to len - 1 do
- if not (Bitvector.unsafe_get run.unstable i) then
- incr count
- done;
- Logger.msg `STATS
- "%i nodes over %i were skipped in iteration %i (%.2f %%), redo is: %b"
- !count len run.pass (100. *. (float !count /. float len))
- run.redo
-
-
- let eval auto tree node =
- let len = T.size tree in
- let run = { config = Array.create len Ata.dummy_config;
- unstable = Bitvector.create ~init:true len;
- redo = true;
- pass = 0
- }
- in
- while run.redo do
- run.redo <- false;
- Ata.reset auto; (* prevents the .cache2 and .cache4 memoization tables from growing too much *)
- run.redo <- top_down_run auto tree node run;
- stats run;
- run.pass <- run.pass + 1;
- done;
- at_exit (fun () -> Logger.msg `STATS "%i iterations" run.pass);
- at_exit (fun () -> stats run);
- let r = get_results auto tree node run.config in
-
- TRACE(Html.gen_trace (module T : Tree.S with type t = T.t) (tree));
-
- r
-*)
let get_results run =
let cache = run.status in
(fun q -> Hashtbl.add res_mapper q [])
(Ata.get_selecting_states auto)
in
+ let dummy = [ T.nil ] in
+ let res_mapper = Cache.N1.create dummy in
+ let () =
+ StateSet.iter
+ (fun q -> Cache.N1.add res_mapper (q :> int) [])
+ (Ata.get_selecting_states auto)
+ in
let rec loop node =
if node != T.nil then
let () = loop (T.next_sibling tree node) in
let () = loop (T.first_child tree node) in
StateSet.iter
(fun q ->
- try
- let acc = Hashtbl.find res_mapper q in
- Hashtbl.replace res_mapper q (node::acc)
- with
- Not_found -> ())
+ let res = Cache.N1.find res_mapper (q :> int) in
+ if res != dummy then
+ Cache.N1.add res_mapper (q :> int) (node::res)
+ )
cache.(T.preorder tree node).NodeStatus.node.sat
in
loop (T.root tree);
- StateSet.fold
- (fun q acc -> (q, Hashtbl.find res_mapper q)::acc)
- (Ata.get_selecting_states auto) []
+ (StateSet.fold_right
+ (fun q acc -> (q, Cache.N1.find res_mapper (q :> int))::acc)
+ (Ata.get_selecting_states auto) [])
+
let prepare_run run list =
let tree = run.tree in
let ns = T.next_sibling tree node in
let status0 =
NodeStatus.make
- { sat = Ata.get_starting_states auto;
+ { rank = 0;
+ sat = Ata.get_starting_states auto;
todo =
StateSet.diff (Ata.get_states auto) (Ata.get_starting_states auto);
summary = NodeSummary.make
let node_id = T.preorder tree node in
status.(node_id) <- status0) list
-
- let eval full auto tree nodes =
+ let tree_size = ref 0
+ let pass = ref 0
+ let compute_run auto tree nodes =
+ pass := 0;
+ tree_size := T.size tree;
let run = make auto tree in
prepare_run run nodes;
- while run.redo do
+ for i = 0 to Ata.get_max_rank auto do
top_down run
done;
- if full then `Full (get_full_results run)
- else `Normal (get_results run)
+ pass := Ata.get_max_rank auto + 1;
+ IFTRACE(Html.gen_trace auto (module T : Tree.S with type t = T.t) tree);
+ run
let full_eval auto tree nodes =
- match eval true auto tree nodes with
- `Full l -> l
- | _ -> assert false
+ let r = compute_run auto tree nodes in
+ get_full_results r
let eval auto tree nodes =
- match eval false auto tree nodes with
- `Normal l -> l
- | _ -> assert false
+ let r = compute_run auto tree nodes in
+ get_results r
+
+ let stats () = {
+ tree_size = !tree_size;
+ run = !pass;
+ cache2_access = !cache2_access;
+ cache2_hit = !cache2_hit;
+ cache5_access = !cache5_access;
+ cache5_hit = !cache5_hit;
+ }
end
projects / tatoo.git / blobdiff