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 = {
| `Parent | `Previous_sibling -> ps
| `Stay -> ss
in
- if sum == dummy_status || StateSet.mem q n_sum.todo then
+ if sum == dummy_status
+ || 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
+(*
+ Logger.msg `STATS "Evaluating for tag %a, state %a@\ncontext: %a@\nleft: %a@\nright: %a@\n\t formula %a yields %s"
+ QName.print tag
+ State.print q
+ NodeStatus.print old_status
+ NodeStatus.print fcs
+ NodeStatus.print nss
+ Ata.Formula.print phi
+ (match v with True -> "True" | False -> "False" | _ -> "Unknown");
+*)
match v with
True -> StateSet.add q a_sat, a_todo
| False -> acc
| Unknown -> a_sat, StateSet.add q a_todo
) old_todo (old_sat, StateSet.empty)
in
+ (* Logger.msg `STATS ""; *)
if old_sat != sat || old_todo != todo then
NodeStatus.make { os_node with sat; todo }
else old_status
let top_down run =
- let _i = run.pass in
+ 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 init_todo = StateSet.diff (Ata.get_states auto) (Ata.get_starting_states auto) in
+ let states_by_rank = Ata.get_states_by_rank auto in
+ let init_todo = states_by_rank.(i) 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;
+ { rank = i;
+ sat = c.NodeStatus.node.sat;
todo = init_todo;
- 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 *)
+ 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
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
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;
- pass := run.pass;
+ pass := Ata.get_max_rank auto + 1;
IFTRACE(Html.gen_trace auto (module T : Tree.S with type t = T.t) tree);
run
let r = compute_run auto tree nodes in
get_results r
- let stats () = {
+ let stats () = {
tree_size = !tree_size;
run = !pass;
cache2_access = !cache2_access;
projects / tatoo.git / blobdiff