* http://cs.unibo.it/helm/.
*)
-let _profiler = <:profiler<_profiler>>;;
+(* let _profiler = <:profiler<_profiler>>;; *)
(* $Id$ *)
-open Inference;;
-open Utils;;
-
(* set to false to disable paramodulation inside auto_tac *)
+
+let fst3 a,_,_ = a;;
+let last _,_,a = a;;
+
let connect_to_auto = true;;
+let debug_print = Utils.debug_print;;
(* profiling statistics... *)
let infer_time = ref 0.;;
let derived_clauses = ref 0;;
let kept_clauses = ref 0;;
-(* index of the greatest Cic.Meta created - TODO: find a better way! *)
-let maxmeta = ref 0;;
-
(* varbiables controlling the search-space *)
let maxdepth = ref 3;;
let maxwidth = ref 3;;
-type new_proof =
- Equality.goal_proof * Equality.proof * int * Subst.substitution * Cic.metasenv
-type result =
- | ParamodulationFailure of string
- | ParamodulationSuccess of new_proof
-;;
-
-type goal = Equality.goal_proof * Cic.metasenv * Cic.term;;
-
type theorem = Cic.term * Cic.term * Cic.metasenv;;
let symbols_of_equality equality =
let (_, _, (_, left, right, _), _,_) = Equality.open_equality equality in
- let m1 = symbols_of_term left in
+ let m1 = Utils.symbols_of_term left in
let m =
- TermMap.fold
+ Utils.TermMap.fold
(fun k v res ->
try
- let c = TermMap.find k res in
- TermMap.add k (c+v) res
+ let c = Utils.TermMap.find k res in
+ Utils.TermMap.add k (c+v) res
with Not_found ->
- TermMap.add k v res)
- (symbols_of_term right) m1
+ Utils.TermMap.add k v res)
+ (Utils.symbols_of_term right) m1
in
m
;;
module EqualitySet = Set.Make(OrderedEquality);;
-exception Empty_list;;
-
-let passive_is_empty = function
- | ([], _), _ -> true
- | _ -> false
+type passive_table = Equality.equality list * EqualitySet.t * Indexing.Index.t
+type active_table = Equality.equality list * Indexing.Index.t
+type new_proof =
+ Equality.goal_proof * Equality.proof * int * Subst.substitution * Cic.metasenv
+type result =
+ | ParamodulationFailure of
+ string * active_table * passive_table * Equality.equality_bag
+ | ParamodulationSuccess of
+ new_proof * active_table * passive_table * Equality.equality_bag
;;
+let list_of_passive (l,_,_) = l ;;
+let list_of_active (l,_) = l ;;
-let size_of_passive ((passive_list, ps), _) = List.length passive_list
-(* EqualitySet.cardinal ps *)
+let make_passive eq_list =
+ let set =
+ List.fold_left (fun s e -> EqualitySet.add e s) EqualitySet.empty eq_list
+ in
+ (* we have the invariant that the list and the set have the same
+ * cardinality *)
+ EqualitySet.elements set, set,
+ List.fold_left Indexing.index Indexing.empty eq_list
+;;
+
+let make_empty_active () = [], Indexing.empty ;;
+let make_active eq_list =
+ eq_list, List.fold_left Indexing.index Indexing.empty eq_list
;;
+let size_of_passive (passive_list, _,_) = List.length passive_list;;
+let size_of_active (active_list, _) = List.length active_list;;
-let size_of_active (active_list, _) = List.length active_list
+let passive_is_empty = function
+ | [], s , _ when EqualitySet.is_empty s -> true
+ | [], s ,_ -> assert false (* the set and the list should be in sync *)
+ | _ -> false
;;
+type goals = Equality.goal list * Equality.goal list
+
+let no_more_passive_goals g = match g with | _,[] -> true | _ -> false;;
+
+
let age_factor = 0.01;;
(**
of weight, age and goal-similarity
*)
-let rec select env (goals,_) passive =
+let rec select env g passive =
processed_clauses := !processed_clauses + 1;
+(*
let goal =
match (List.rev goals) with goal::_ -> goal | _ -> assert false
in
- let (pos_list, pos_set), passive_table = passive in
+*)
+ let pos_list, pos_set, pos_table = passive in
let remove eq l = List.filter (fun e -> Equality.compare e eq <> 0) l in
if !weight_age_ratio > 0 then
weight_age_counter := !weight_age_counter - 1;
match !weight_age_counter with
| 0 -> (
weight_age_counter := !weight_age_ratio;
- let rec skip_giant pos_list pos_set passive_table =
+ let skip_giant pos_list pos_set pos_table =
+ match pos_list with
+ | (hd:EqualitySet.elt)::tl ->
+ let w,_,_,_,_ = Equality.open_equality hd in
+ if w < 30 then
+ hd, (tl, EqualitySet.remove hd pos_set,
+ Indexing.remove_index pos_table hd)
+ else
+(*
+ (prerr_endline
+ ("+++ skipping giant of size "^string_of_int w^" +++");
+*)
+ select env g (tl@[hd],pos_set,pos_table)
+ | _ -> assert false
+ in
+ skip_giant pos_list pos_set pos_table)
+
+(*
+ let rec skip_giant pos_list pos_set =
match pos_list with
| (hd:EqualitySet.elt)::tl ->
let w,_,_,_,_ = Equality.open_equality hd in
- let passive_table =
- Indexing.remove_index passive_table hd
- in
let pos_set = EqualitySet.remove hd pos_set in
- if w < 500 then
- hd, ((tl, pos_set), passive_table)
+ if w < 30 then
+ hd, (tl, pos_set)
else
- (prerr_endline ("\n\n\nGIANT SKIPPED: "^string_of_int w^"\n\n\n");
- skip_giant tl pos_set passive_table)
+ (prerr_endline
+ ("+++ skipping giant of size "^string_of_int w^" +++");
+ skip_giant tl pos_set)
| _ -> assert false
- in
- skip_giant pos_list pos_set passive_table)
+ in
+ skip_giant pos_list pos_set)
+
+*)
+(*
| _ when (!symbols_counter > 0) ->
(symbols_counter := !symbols_counter - 1;
let cardinality map =
- TermMap.fold (fun k v res -> res + v) map 0
+ Utils.TermMap.fold (fun k v res -> res + v) map 0
in
let symbols =
let _, _, term = goal in
- symbols_of_term term
+ Utils.symbols_of_term term
in
let card = cardinality symbols in
let foldfun k v (r1, r2) =
- if TermMap.mem k symbols then
- let c = TermMap.find k symbols in
+ if Utils.TermMap.mem k symbols then
+ let c = Utils.TermMap.find k symbols in
let c1 = abs (c - v) in
let c2 = v - c1 in
r1 + c2, r2 + c1
in
let f equality (i, e) =
let common, others =
- TermMap.fold foldfun (symbols_of_equality equality) (0, 0)
+ Utils.TermMap.fold foldfun (symbols_of_equality equality) (0, 0)
in
let c = others + (abs (common - card)) in
if c < i then (c, equality)
let e1 = EqualitySet.min_elt pos_set in
let initial =
let common, others =
- TermMap.fold foldfun (symbols_of_equality e1) (0, 0)
+ Utils.TermMap.fold foldfun (symbols_of_equality e1) (0, 0)
in
(others + (abs (common - card))), e1
in
let _, current = EqualitySet.fold f pos_set initial in
- let passive_table =
- Indexing.remove_index passive_table current
- in
current,
- ((remove current pos_list, EqualitySet.remove current pos_set),
- passive_table))
+ (remove current pos_list, EqualitySet.remove current pos_set))
+*)
| _ ->
symbols_counter := !symbols_ratio;
let my_min e1 e2 =
let w1,_,_,_,_ = Equality.open_equality e1 in
- let w2,_,_,_,_ = Equality.open_equality e2 in
- if w1 < w2 then e1 else e2
+ let w2,_,_,_,_ = Equality.open_equality e2 in
+ if w1 < w2 then e1 else e2
in
let rec my_min_elt min = function
| [] -> min
- | hd::tl -> my_min_elt (my_min hd min) tl
- in
- (* let current = EqualitySet.min_elt pos_set in *)
- let current = my_min_elt (List.hd pos_list) (List.tl pos_list) in
- let passive_table =
- Indexing.remove_index passive_table current
+ | hd::tl -> my_min_elt (my_min hd min) tl
in
- current,
- ((remove current pos_list, EqualitySet.remove current pos_set),
- passive_table)
+(* let current = EqualitySet.min_elt pos_set in *)
+ let current = my_min_elt (List.hd pos_list) (List.tl pos_list) in
+ current,(remove current pos_list, EqualitySet.remove current pos_set,
+ Indexing.remove_index pos_table current)
;;
-let filter_dependent passive id =
- prerr_endline ("+++++++++++++++passives "^
- ( string_of_int (size_of_passive passive)));
- let (pos_list, pos_set), passive_table = passive in
- let passive =
+
+let filter_dependent bag passive id =
+ let pos_list, pos_set, pos_table = passive in
+ let passive,no_pruned =
List.fold_right
- (fun eq ((list,set),table) ->
- if Equality.depend eq id then
- (let _,_,_,_,id_eq = Equality.open_equality eq in
- if id_eq = 9228 then
- prerr_endline ("\n\n--------filtering "^(string_of_int id_eq));
- ((list,
- EqualitySet.remove eq set),
- Indexing.remove_index table eq))
+ (fun eq ((list,set,table),no) ->
+ if Equality.depend bag eq id then
+ (list, EqualitySet.remove eq set,Indexing.remove_index table eq),
+ no + 1
else
- ((eq::list, set),table))
- pos_list (([],pos_set),passive_table) in
- prerr_endline ("+++++++++++++++passives "^
- ( string_of_int (size_of_passive passive)));
- passive
-;;
-
-
-(* initializes the passive set of equalities *)
-let make_passive pos =
- let set_of equalities =
- List.fold_left (fun s e -> EqualitySet.add e s) EqualitySet.empty equalities
- in
- let table =
- List.fold_left (fun tbl e -> Indexing.index tbl e) Indexing.empty pos
+ (eq::list,set,table), no)
+ pos_list (([],pos_set,pos_table),0)
in
- (pos, set_of pos),
- table
-;;
-
-
-let make_active () =
- [], Indexing.empty
+(*
+ if no_pruned > 0 then
+ prerr_endline ("+++ pruning "^ string_of_int no_pruned ^" passives +++");
+*)
+ passive
;;
(* adds to passive a list of equalities new_pos *)
-let add_to_passive passive new_pos =
- let (pos_list, pos_set), table = passive in
+let add_to_passive passive new_pos preferred =
+ let pos_list, pos_set , pos_table = passive in
let ok set equality = not (EqualitySet.mem equality set) in
let pos = List.filter (ok pos_set) new_pos in
- let table =
- List.fold_left (fun tbl e -> Indexing.index tbl e) table pos
- in
let add set equalities =
List.fold_left (fun s e -> EqualitySet.add e s) set equalities
in
- (pos_list @ pos, add pos_set pos),
- table
+ let pos_head, pos_tail =
+ List.partition
+ (fun e -> List.exists (fun x -> Equality.compare x e = 0) preferred)
+ pos
+ in
+ pos_head @ pos_list @ pos_tail, add pos_set pos,
+ List.fold_left Indexing.index pos_table pos
;;
(* TODO *)
in
let in_weight = round (howmany *. ratio /. (ratio +. 1.))
and in_age = round (howmany /. (ratio +. 1.)) in
- debug_print
+ Utils.debug_print
(lazy (Printf.sprintf "in_weight: %d, in_age: %d\n" in_weight in_age));
let counter = ref !symbols_ratio in
let rec pickw w ps =
(** inference of new equalities between current and some in active *)
-let infer eq_uri env current (active_list, active_table) =
+let infer bag eq_uri env current (active_list, active_table) =
let (_,c,_) = env in
if Utils.debug_metas then
- (ignore(Indexing.check_target c current "infer1");
- ignore(List.map (function current -> Indexing.check_target c current "infer2") active_list));
- let new_pos =
- let maxm, copy_of_current = Equality.fix_metas !maxmeta current in
- maxmeta := maxm;
+ (ignore(Indexing.check_target bag c current "infer1");
+ ignore(List.map (function current -> Indexing.check_target bag c current "infer2") active_list));
+ let bag, new_pos =
+ let bag, copy_of_current = Equality.fix_metas bag current in
let active_table = Indexing.index active_table copy_of_current in
- let _ = <:start<current contro active>> in
- let maxm, res =
- Indexing.superposition_right eq_uri !maxmeta env active_table current
+(* let _ = <:start<current contro active>> in *)
+ let bag, res =
+ Indexing.superposition_right bag eq_uri env active_table current
in
- let _ = <:stop<current contro active>> in
+(* let _ = <:stop<current contro active>> in *)
if Utils.debug_metas then
ignore(List.map
(function current ->
- Indexing.check_target c current "sup0") res);
- maxmeta := maxm;
- let rec infer_positive table = function
- | [] -> []
+ Indexing.check_target bag c current "sup0") res);
+ let rec infer_positive bag table = function
+ | [] -> bag, []
| equality::tl ->
- let maxm, res =
- Indexing.superposition_right
- ~subterms_only:true eq_uri !maxmeta env table equality
+ let bag, res =
+ Indexing.superposition_right bag
+ ~subterms_only:true eq_uri env table equality
in
- maxmeta := maxm;
if Utils.debug_metas then
ignore
(List.map
(function current ->
- Indexing.check_target c current "sup2") res);
- let pos = infer_positive table tl in
- res @ pos
+ Indexing.check_target bag c current "sup2") res);
+ let bag, pos = infer_positive bag table tl in
+ bag, res @ pos
in
-(*
- let maxm, copy_of_current = Equality.fix_metas !maxmeta current in
- maxmeta := maxm;
-*)
let curr_table = Indexing.index Indexing.empty current in
- let _ = <:start<active contro current>> in
- let pos = infer_positive curr_table ((*copy_of_current::*)active_list) in
- let _ = <:stop<active contro current>> in
+ let bag, pos = infer_positive bag curr_table ((*copy_of_current::*)active_list) in
if Utils.debug_metas then
ignore(List.map
(function current ->
- Indexing.check_target c current "sup3") pos);
- res @ pos
+ Indexing.check_target bag c current "sup3") pos);
+ bag, res @ pos
in
derived_clauses := !derived_clauses + (List.length new_pos);
match !maximal_retained_equality with
- | None -> new_pos
+ | None -> bag, new_pos
| Some eq ->
ignore(assert false);
(* if we have a maximal_retained_equality, we can discard all equalities
greater than maximal_retained_equality if it is bigger
wrt. OrderedEquality.compare and it is less similar than
maximal_retained_equality to the current goal *)
- List.filter (fun e -> OrderedEquality.compare e eq <= 0) new_pos
+ bag, List.filter (fun e -> OrderedEquality.compare e eq <= 0) new_pos
;;
let check_for_deep_subsumption env active_table eq =
fst (aux false (true,false) left right)
;;
-(* buttare via sign *)
-
(** simplifies current using active and passive *)
-let forward_simplify
- eq_uri env (sign,current) ?passive (active_list, active_table)
-=
+let forward_simplify bag eq_uri env current (active_list, active_table) =
let _, context, _ = env in
- let passive_table =
- match passive with
- | None -> None
- | Some ((_, _), pt) -> Some pt
- in
- let demodulate table current =
- let newmeta, newcurrent =
- Indexing.demodulation_equality eq_uri !maxmeta env table sign current in
- maxmeta := newmeta;
- if Equality.is_identity env newcurrent then
- None
- else
- Some newcurrent
+ let demodulate bag table current =
+ let bag, newcurrent =
+ Indexing.demodulation_equality bag eq_uri env table current
+ in
+ bag, if Equality.is_identity env newcurrent then None else Some newcurrent
in
- let rec demod current =
+ let demod bag current =
if Utils.debug_metas then
- ignore (Indexing.check_target context current "demod0");
- let res = demodulate active_table current in
- if Utils.debug_metas then
- ignore ((function None -> () | Some x ->
- ignore (Indexing.check_target context x "demod1");()) res);
- match res with
- | None -> None
- | Some newcurrent ->
- match passive_table with
- | None -> res
- | Some passive_table ->
- match demodulate passive_table newcurrent with
- | None -> None
- | Some newnewcurrent ->
- if Equality.compare newcurrent newnewcurrent <> 0 then
- demod newnewcurrent
- else Some newnewcurrent
+ ignore (Indexing.check_target bag context current "demod0");
+ let bag, res = demodulate bag active_table current in
+ if Utils.debug_metas then
+ ignore ((function None -> () | Some x ->
+ ignore (Indexing.check_target bag context x "demod1");()) res);
+ bag, res
in
- let res = demod current in
+ let bag, res = demod bag current in
match res with
- | None -> None
+ | None -> bag, None
| Some c ->
- if Indexing.in_index active_table c then
- None
- else
- match passive_table with
- | None ->
- if check_for_deep_subsumption env active_table c then
- None
- else
- res
-(*
- if Indexing.subsumption env active_table c = None then
- res
- else
- None
-*)
- | Some passive_table ->
- if Indexing.in_index passive_table c then None
- else
- if check_for_deep_subsumption env active_table c then
- None
- else
-(* if Indexing.subsumption env active_table c = None then*)
- (match Indexing.subsumption env passive_table c with
- | None -> res
- | Some (_,c',_) ->
- None
- (*prerr_endline "\n\nPESCO DALLE PASSIVE LA PIU' GENERALE\n\n";
- Some c'*))
-(*
- else
- None
-*)
+ if Indexing.in_index active_table c ||
+ check_for_deep_subsumption env active_table c
+ then
+ bag, None
+ else
+ bag, res
;;
(** simplifies new using active and passive *)
-let forward_simplify_new eq_uri env new_pos ?passive active =
+let forward_simplify_new bag eq_uri env new_pos active =
if Utils.debug_metas then
begin
let m,c,u = env in
ignore(List.map
- (fun current -> Indexing.check_target c current "forward new pos")
+ (fun current -> Indexing.check_target bag c current "forward new pos")
new_pos;)
end;
let active_list, active_table = active in
- let passive_table =
- match passive with
- | None -> None
- | Some ((_, _), pt) -> Some pt
- in
- let demodulate sign table target =
- let newmeta, newtarget =
- Indexing.demodulation_equality eq_uri !maxmeta env table sign target
+ let demodulate bag table target =
+ let bag, newtarget =
+ Indexing.demodulation_equality bag eq_uri env table target
in
- maxmeta := newmeta;
- newtarget
+ bag, newtarget
in
(* we could also demodulate using passive. Currently we don't *)
- let new_pos =
- List.map (demodulate Positive active_table) new_pos
+ let bag, new_pos =
+ List.fold_right (fun x (bag,acc) ->
+ let bag, y = demodulate bag active_table x in
+ bag, y::acc)
+ new_pos (bag,[])
in
let new_pos_set =
List.fold_left
EqualitySet.empty new_pos
in
let new_pos = EqualitySet.elements new_pos_set in
-
- let subs =
- match passive_table with
- | None ->
- (fun e -> (Indexing.subsumption env active_table e = None))
- | Some passive_table ->
- (fun e -> ((Indexing.subsumption env active_table e = None) &&
- (Indexing.subsumption env passive_table e = None)))
- in
- let is_duplicate =
- match passive_table with
- | None ->
- (fun e -> not (Indexing.in_index active_table e))
- | Some passive_table ->
- (fun e ->
- not ((Indexing.in_index active_table e) ||
- (Indexing.in_index passive_table e)))
- in
- List.filter subs (List.filter is_duplicate new_pos)
+ let subs e = Indexing.subsumption env active_table e = None in
+ let is_duplicate e = not (Indexing.in_index active_table e) in
+ bag, List.filter subs (List.filter is_duplicate new_pos)
;;
(** simplifies a goal with equalities in active and passive *)
-let rec simplify_goal env goal ?passive (active_list, active_table) =
- let passive_table =
- match passive with
- | None -> None
- | Some ((_, _), pt) -> Some pt
- in
- let demodulate table goal = Indexing.demodulation_goal env table goal in
- let changed, goal =
- match passive_table with
- | None -> demodulate active_table goal
- | Some passive_table ->
- let changed, goal = demodulate active_table goal in
-(* let changed', goal = demodulate passive_table goal in*)
- (changed (*|| changed'*)), goal
- in
+let rec simplify_goal bag env goal (active_list, active_table) =
+ let demodulate table goal = Indexing.demodulation_goal bag env table goal in
+ let changed, goal = demodulate active_table goal in
changed,
if not changed then
goal
else
- snd (simplify_goal env goal ?passive (active_list, active_table))
+ snd (simplify_goal bag env goal (active_list, active_table))
;;
-let simplify_goals env goals ?passive active =
+let simplify_goals bag env goals active =
let a_goals, p_goals = goals in
- let p_goals =
- List.map
- (fun g -> snd (simplify_goal env g ?passive active))
- p_goals
- in
- let a_goals =
- List.map
- (fun g -> snd (simplify_goal env g ?passive active))
- a_goals
- in
+ let p_goals = List.map (fun g -> snd (simplify_goal bag env g active)) p_goals in
+ let a_goals = List.map (fun g -> snd (simplify_goal bag env g active)) a_goals in
a_goals, p_goals
;;
(** simplifies active usign new *)
-let backward_simplify_active eq_uri env new_pos new_table min_weight active =
+let backward_simplify_active
+ bag eq_uri env new_pos new_table min_weight active
+=
let active_list, active_table = active in
- let active_list, newa, pruned =
+ let bag, active_list, newa, pruned =
List.fold_right
- (fun equality (res, newn,pruned) ->
+ (fun equality (bag, res, newn,pruned) ->
let ew, _, _, _,id = Equality.open_equality equality in
if ew < min_weight then
- equality::res, newn,pruned
+ bag, equality::res, newn,pruned
else
match
- forward_simplify
- eq_uri env (Utils.Positive, equality) (new_pos, new_table)
+ forward_simplify bag eq_uri env equality (new_pos, new_table)
with
- | None -> res, newn, id::pruned
- | Some e ->
+ | bag, None -> bag, res, newn, id::pruned
+ | bag, Some e ->
if Equality.compare equality e = 0 then
- e::res, newn, pruned
+ bag, e::res, newn, pruned
else
- res, e::newn, pruned)
- active_list ([], [],[])
+ bag, res, e::newn, pruned)
+ active_list (bag, [], [],[])
in
let find eq1 where =
List.exists (Equality.meta_convertibility_eq eq1) where
newa []
in
match newa with
- | [] -> (active1,tbl), None, pruned
- | _ -> (active1,tbl), Some newa, pruned
+ | [] -> bag, (active1,tbl), None, pruned
+ | _ -> bag, (active1,tbl), Some newa, pruned
;;
(** simplifies passive using new *)
-let backward_simplify_passive eq_uri env new_pos new_table min_weight passive =
+let backward_simplify_passive
+ bag eq_uri env new_pos new_table min_weight passive
+=
let (pl, ps), passive_table = passive in
- let f sign equality (resl, ress, newn) =
+ let f bag equality (resl, ress, newn) =
let ew, _, _, _ , _ = Equality.open_equality equality in
if ew < min_weight then
- equality::resl, ress, newn
+ bag, (equality::resl, ress, newn)
else
match
- forward_simplify eq_uri env (sign, equality) (new_pos, new_table)
+ forward_simplify bag eq_uri env equality (new_pos, new_table)
with
- | None -> resl, EqualitySet.remove equality ress, newn
- | Some e ->
+ | bag, None ->
+ bag, (resl, EqualitySet.remove equality ress, newn)
+ | bag, Some e ->
if equality = e then
- equality::resl, ress, newn
+ bag, (equality::resl, ress, newn)
else
let ress = EqualitySet.remove equality ress in
- resl, ress, e::newn
+ bag, (resl, ress, e::newn)
in
- let pl, ps, newp = List.fold_right (f Positive) pl ([], ps, []) in
+ let bag, (pl, ps, newp) =
+ List.fold_right (fun x (bag,acc) -> f bag x acc) pl (bag,([], ps, [])) in
let passive_table =
List.fold_left
(fun tbl e -> Indexing.index tbl e) Indexing.empty pl
in
match newp with
- | [] -> ((pl, ps), passive_table), None
- | _ -> ((pl, ps), passive_table), Some (newp)
+ | [] -> bag, ((pl, ps), passive_table), None
+ | _ -> bag, ((pl, ps), passive_table), Some (newp)
;;
let build_table equations =
;;
-let backward_simplify eq_uri env new' ?passive active =
+let backward_simplify bag eq_uri env new' active =
let new_pos, new_table, min_weight = build_table new' in
-(*
- List.fold_left
- (fun (l, t, w) e ->
- let ew, _, _, _ , _ = Equality.open_equality e in
- e::l, Indexing.index t e, min ew w)
- ([], Indexing.empty, 1000000) new'
+ let bag, active, newa, pruned =
+ backward_simplify_active bag eq_uri env new_pos new_table min_weight active
in
-*)
- let active, newa, pruned =
- backward_simplify_active eq_uri env new_pos new_table min_weight active
- in
- match passive with
- | None ->
- active, (make_passive []), newa, None, pruned
- | Some passive ->
- active, passive, newa, None, pruned
-(* prova
- let passive, newp =
- backward_simplify_passive env new_pos new_table min_weight passive in
- active, passive, newa, newp *)
+ bag, active, newa, pruned
;;
-let close eq_uri env new' given =
+let close bag eq_uri env new' given =
let new_pos, new_table, min_weight =
List.fold_left
(fun (l, t, w) e ->
([], Indexing.empty, 1000000) (snd new')
in
List.fold_left
- (fun p c ->
- let pos = infer eq_uri env c (new_pos,new_table) in
- pos@p)
- [] given
+ (fun (bag,p) c ->
+ let bag, pos = infer bag eq_uri env c (new_pos,new_table) in
+ bag, pos@p)
+ (bag,[]) given
;;
let is_commutative_law eq =
| _ -> false
;;
-let prova eq_uri env new' active =
+let prova bag eq_uri env new' active =
let given = List.filter is_commutative_law (fst active) in
let _ =
- debug_print
+ Utils.debug_print
(lazy
(Printf.sprintf "symmetric:\n%s\n"
(String.concat "\n"
(List.map
(fun e -> Equality.string_of_equality ~env e)
given)))) in
- close eq_uri env new' given
+ close bag eq_uri env new' given
;;
(* returns an estimation of how many equalities in passive can be activated
| [] -> false, (active, passive)
;;
-
-
-let simplify_theorems env theorems ?passive (active_list, active_table) =
- let pl, passive_table =
- match passive with
- | None -> [], None
- | Some ((pn, _), (pp, _), pt) ->
- let pn = List.map (fun e -> (Negative, e)) pn
- and pp = List.map (fun e -> (Positive, e)) pp in
- pn @ pp, Some pt
- in
- let a_theorems, p_theorems = theorems in
- let demodulate table theorem =
- let newmeta, newthm =
- Indexing.demodulation_theorem !maxmeta env table theorem in
- maxmeta := newmeta;
- theorem != newthm, newthm
- in
- let foldfun table (a, p) theorem =
- let changed, theorem = demodulate table theorem in
- if changed then (a, theorem::p) else (theorem::a, p)
- in
- let mapfun table theorem = snd (demodulate table theorem) in
- match passive_table with
- | None ->
- let p_theorems = List.map (mapfun active_table) p_theorems in
- List.fold_left (foldfun active_table) ([], p_theorems) a_theorems
- | Some passive_table ->
- let p_theorems = List.map (mapfun active_table) p_theorems in
- let p_theorems, a_theorems =
- List.fold_left (foldfun active_table) ([], p_theorems) a_theorems in
- let p_theorems = List.map (mapfun passive_table) p_theorems in
- List.fold_left (foldfun passive_table) ([], p_theorems) a_theorems
-;;
-
-
-let rec simpl eq_uri env e others others_simpl =
+let rec simpl bag eq_uri env e others others_simpl =
let active = others @ others_simpl in
let tbl =
List.fold_left
- (fun t e -> Indexing.index t e)
+ (fun t e ->
+ if Equality.is_identity env e then t else Indexing.index t e)
Indexing.empty active
in
- let res = forward_simplify eq_uri env (Positive,e) (active, tbl) in
+ let bag, res =
+ forward_simplify bag eq_uri env e (active, tbl)
+ in
match others with
| hd::tl -> (
match res with
- | None -> simpl eq_uri env hd tl others_simpl
- | Some e -> simpl eq_uri env hd tl (e::others_simpl)
+ | None -> simpl bag eq_uri env hd tl others_simpl
+ | Some e -> simpl bag eq_uri env hd tl (e::others_simpl)
)
| [] -> (
match res with
- | None -> others_simpl
- | Some e -> e::others_simpl
+ | None -> bag, others_simpl
+ | Some e -> bag, e::others_simpl
)
;;
-let simplify_equalities eq_uri env equalities =
- debug_print
+let simplify_equalities bag eq_uri env equalities =
+ Utils.debug_print
(lazy
(Printf.sprintf "equalities:\n%s\n"
(String.concat "\n"
(List.map Equality.string_of_equality equalities))));
- debug_print (lazy "SIMPLYFYING EQUALITIES...");
+Utils.debug_print (lazy "SIMPLYFYING EQUALITIES...");
match equalities with
- | [] -> []
+ | [] -> bag, []
| hd::tl ->
- let res =
- List.rev (simpl eq_uri env hd tl [])
- in
- debug_print
+ let bag, res = simpl bag eq_uri env hd tl [] in
+ let res = List.rev res in
+ Utils.debug_print
(lazy
(Printf.sprintf "equalities AFTER:\n%s\n"
(String.concat "\n"
(List.map Equality.string_of_equality res))));
- res
+ bag, res
;;
let print_goals goals =
Printf.sprintf "%d: %s" d (String.concat "; " gl')) goals))
;;
-let check_if_goal_is_subsumed ((_,ctx,_) as env) table (goalproof,menv,ty) =
-(*
- let names = names_of_context ctx in
- Printf.eprintf "check_goal_subsumed: %s\n" (CicPp.pp ty names);
-*)
+let pp_goal_set msg goals names =
+ let active_goals, passive_goals = goals in
+ debug_print (lazy ("////" ^ msg));
+ debug_print (lazy ("ACTIVE G: " ^
+ (String.concat "\n " (List.map (fun (_,_,g) -> CicPp.pp g names)
+ active_goals))));
+ debug_print (lazy ("PASSIVE G: " ^
+ (String.concat "\n " (List.map (fun (_,_,g) -> CicPp.pp g names)
+ passive_goals))))
+;;
+
+let check_if_goal_is_subsumed bag ((_,ctx,_) as env) table (goalproof,menv,ty) =
+(* let names = Utils.names_of_context ctx in *)
match ty with
| Cic.Appl[Cic.MutInd(uri,_,_);eq_ty;left;right]
when LibraryObjects.is_eq_URI uri ->
- (let goal_equation =
- Equality.mk_equality
- (0,Equality.Exact (Cic.Implicit None),(eq_ty,left,right,Eq),menv)
+ (let bag, goal_equation =
+ Equality.mk_equality bag
+ (0,Equality.Exact (Cic.Implicit None),(eq_ty,left,right,Utils.Eq),menv)
in
-(* match Indexing.subsumption env table goal_equation with*)
+ (* match Indexing.subsumption env table goal_equation with *)
match Indexing.unification env table goal_equation with
| Some (subst, equality, swapped ) ->
+(*
+ prerr_endline
+ ("GOAL SUBSUMED IS: "^Equality.string_of_equality goal_equation ~env);
prerr_endline
- ("GOAL SUBSUMED BY: " ^ Equality.string_of_equality equality);
- prerr_endline ("SUBST:" ^ Subst.ppsubst subst);
+ ("GOAL IS SUBSUMED BY: "^Equality.string_of_equality equality ~env);
+ prerr_endline ("SUBST:"^Subst.ppsubst ~names subst);
+*)
let (_,p,(ty,l,r,_),m,id) = Equality.open_equality equality in
let cicmenv = Subst.apply_subst_metasenv subst (m @ menv) in
- let p =
+ let bag, p =
if swapped then
- Equality.symmetric eq_ty l id uri m
+ Equality.symmetric bag eq_ty l id uri m
else
- p
+ bag, p
in
- Some (goalproof, p, id, subst, cicmenv)
- | None -> None)
- | _ -> None
+ bag, Some (goalproof, p, id, subst, cicmenv)
+ | None ->
+ bag, None)
+ | _ -> bag, None
;;
+let find_all_subsumed bag env table (goalproof,menv,ty) =
+ match ty with
+ | Cic.Appl[Cic.MutInd(uri,_,_);eq_ty;left;right]
+ when LibraryObjects.is_eq_URI uri ->
+ let bag, goal_equation =
+ (Equality.mk_equality bag
+ (0,Equality.Exact (Cic.Implicit None),(eq_ty,left,right,Utils.Eq),menv))
+ in
+ List.fold_right
+ (fun (subst, equality, swapped) (bag,acc) ->
+ let (_,p,(ty,l,r,_),m,id) = Equality.open_equality equality in
+ let cicmenv = Subst.apply_subst_metasenv subst (m @ menv) in
+ if Utils.debug_metas then
+ Indexing.check_for_duplicates cicmenv "from subsumption";
+ let bag, p =
+ if swapped then
+ Equality.symmetric bag eq_ty l id uri m
+ else
+ bag, p
+ in
+ bag, (goalproof, p, id, subst, cicmenv)::acc)
+ (Indexing.subsumption_all env table goal_equation) (bag,[])
+ (* (Indexing.unification_all env table goal_equation) *)
+ | _ -> assert false
+;;
+
+
let check_if_goal_is_identity env = function
| (goalproof,m,Cic.Appl[Cic.MutInd(uri,_,ens);eq_ty;left;right])
when left = right && LibraryObjects.is_eq_URI uri ->
(let _,context,_ = env in
try
let s,m,_ =
- Inference.unification m m context left right CicUniv.empty_ugraph
+ Founif.unification [] m context left right CicUniv.empty_ugraph
in
let reflproof = Equality.Exact (Equality.refl_proof uri eq_ty left) in
let m = Subst.apply_subst_metasenv s m in
Some (goalproof, reflproof, 0, s,m)
- with _ -> None)
+ with CicUnification.UnificationFailure _ -> None)
| _ -> None
;;
-let rec check goal = function
- | [] -> None
+let rec check b goal = function
+ | [] -> b, None
| f::tl ->
- match f goal with
- | None -> check goal tl
- | (Some p) as ok -> ok
+ match f b goal with
+ | b, None -> check b goal tl
+ | b, (Some _ as ok) -> b, ok
;;
-let simplify_goal_set env goals passive active =
+let simplify_goal_set bag env goals active =
let active_goals, passive_goals = goals in
let find (_,_,g) where =
List.exists (fun (_,_,g1) -> Equality.meta_convertibility g g1) where
in
- let simplified =
+ (* prova:tengo le passive semplificate
+ let passive_goals =
+ List.map (fun g -> snd (simplify_goal env g active)) passive_goals
+ in *)
List.fold_left
- (fun acc goal ->
- match simplify_goal env goal ~passive active with
+ (fun (acc_a,acc_p) goal ->
+ match simplify_goal bag env goal active with
| changed, g ->
- if changed then prerr_endline "???????????????cambiato ancora";
- if find g acc then acc else g::acc)
- (* active_goals active_goals *)
- [] active_goals
- in
- if List.length active_goals <> List.length simplified then
- prerr_endline "SEMPLIFICANDO HO SCARTATO...";
- (simplified,passive_goals)
- (*
- HExtlib.list_uniq ~eq:(fun (_,_,t1) (_,_,t2) -> t1 = t2)
- (List.sort (fun (_,_,t1) (_,_,t2) -> compare t1 t1)
- ((*goals @*) simplified))
- *)
+ if changed then
+ if find g acc_p then acc_a,acc_p else acc_a,g::acc_p
+ else
+ if find g acc_a then acc_a,acc_p else g::acc_a,acc_p)
+ ([],passive_goals) active_goals
;;
-let check_if_goals_set_is_solved env active goals =
+let check_if_goals_set_is_solved bag env active passive goals =
let active_goals, passive_goals = goals in
List.fold_left
- (fun proof goal ->
+ (fun (bag, proof) goal ->
match proof with
- | Some p -> proof
+ | Some p -> bag, proof
| None ->
- check goal [
- check_if_goal_is_identity env;
- check_if_goal_is_subsumed env (snd active)])
- None active_goals
+ check bag goal [
+ (fun b x -> b, check_if_goal_is_identity env x);
+ (fun bag -> check_if_goal_is_subsumed bag env (snd active));
+ (fun bag -> check_if_goal_is_subsumed bag env (last passive))
+ ])
+ (bag,None) (active_goals @ passive_goals)
;;
-let infer_goal_set env active goals =
+let infer_goal_set bag env active goals =
let active_goals, passive_goals = goals in
- let rec aux = function
- | [] -> goals
+ let rec aux bag = function
+ | [] -> bag, (active_goals, [])
| hd::tl ->
- let changed,selected = simplify_goal env hd active in
- if changed then
- prerr_endline ("--------------- goal semplificato");
- let (_,_,t1) = selected in
- if (List.exists
- (fun (_,_,t) ->
- Equality.meta_convertibility t t1)
- active_goals) then aux tl
- else
- let passive_goals = tl in
- let new_passive_goals =
- if Utils.metas_of_term t1 = [] then passive_goals
- else
- let new' =
- Indexing.superposition_left env (snd active) selected in
- passive_goals @ new'
+ let changed, selected = simplify_goal bag env hd active in
+ let (_,m1,t1) = selected in
+ let already_in =
+ List.exists (fun (_,_,t) -> Equality.meta_convertibility t t1)
+ active_goals
in
- selected::active_goals, new_passive_goals
- in
- aux passive_goals
-;;
-
-(* old
-let infer_goal_set env active goals =
- let active_goals, passive_goals = goals in
- let rec aux = function
- | [] -> goals
- | ((_,_,t1) as hd)::tl when
- not (List.exists
- (fun (_,_,t) ->
- Equality.meta_convertibility t t1)
- active_goals)
- ->
- let selected = hd in
- let passive_goals = tl in
- let new_passive_goals =
- if CicUtil.is_meta_closed t1 then
- passive_goals
- else
- let new' = Indexing.superposition_left env (snd active) selected in
- passive_goals @ new'
- in
- selected::active_goals, new_passive_goals
- | _::tl -> aux tl
+ if already_in then
+ aux bag tl
+ else
+ let passive_goals = tl in
+ let bag, new_passive_goals =
+ if Utils.metas_of_term t1 = [] then
+ bag, passive_goals
+ else
+ let bag, new' =
+ Indexing.superposition_left bag env (snd active) selected
+ in
+ bag, passive_goals @ new'
+ in
+ bag, (selected::active_goals, new_passive_goals)
in
- aux passive_goals
+ aux bag passive_goals
;;
-*)
-let infer_goal_set_with_current env current goals =
- let active_goals, passive_goals = goals in
- let _,table,_ = build_table [current] in
- active_goals,
- List.fold_left
- (fun acc g ->
- let new' = Indexing.superposition_left env table g in
- acc @ new')
- passive_goals active_goals
+let infer_goal_set_with_current bag env current goals active =
+ let active_goals, passive_goals = simplify_goal_set bag env goals active in
+ let l,table,_ = build_table [current] in
+ let bag, passive_goals =
+ List.fold_left
+ (fun (bag, acc) g ->
+ let bag, new' = Indexing.superposition_left bag env table g in
+ bag, acc @ new')
+ (bag, passive_goals) active_goals
+ in
+ bag, active_goals, passive_goals
;;
let ids_of_goal g =
let size_of_goal_set_a (l,_) = List.length l;;
let size_of_goal_set_p (_,l) = List.length l;;
+
+let pp_goals label goals context =
+ let names = Utils.names_of_context context in
+ List.iter
+ (fun _,_,g ->
+ debug_print (lazy
+ (Printf.sprintf "Current goal: %s = %s\n" label (CicPp.pp g names))))
+ (fst goals);
+ List.iter
+ (fun _,_,g ->
+ debug_print (lazy
+ (Printf.sprintf "PASSIVE goal: %s = %s\n" label (CicPp.pp g names))))
+ (snd goals);
+;;
+
+let print_status iterno goals active passive =
+ debug_print (lazy
+ (Printf.sprintf "\n%d #ACTIVES: %d #PASSIVES: %d #GOALSET: %d(%d)"
+ iterno (size_of_active active) (size_of_passive passive)
+ (size_of_goal_set_a goals) (size_of_goal_set_p goals)))
+;;
+
+let add_to_active_aux bag active passive env eq_uri current =
+ debug_print (lazy ("Adding to actives : " ^
+ Equality.string_of_equality ~env current));
+ match forward_simplify bag eq_uri env current active with
+ | bag, None -> None, active, passive, bag
+ | bag, Some current ->
+ let bag, new' = infer bag eq_uri env current active in
+ let active =
+ let al, tbl = active in
+ al @ [current], Indexing.index tbl current
+ in
+ let rec simplify bag new' active passive =
+ let bag, new' =
+ forward_simplify_new bag eq_uri env new' active
+ in
+ let bag, active, newa, pruned =
+ backward_simplify bag eq_uri env new' active
+ in
+ let passive =
+ List.fold_left (filter_dependent bag) passive pruned
+ in
+ match newa with
+ | None -> bag, active, passive, new'
+ | Some p -> simplify bag (new' @ p) active passive
+ in
+ let bag, active, passive, new' =
+ simplify bag new' active passive
+ in
+ let passive = add_to_passive passive new' [] in
+ Some new', active, passive, bag
+;;
(** given-clause algorithm with full reduction strategy: NEW implementation *)
(* here goals is a set of goals in OR *)
let given_clause
- eq_uri ((_,context,_) as env) goals theorems passive active max_iterations max_time
+ bag eq_uri ((_,context,_) as env) goals passive active
+ goal_steps saturation_steps max_time
=
- let names = names_of_context context in
let initial_time = Unix.gettimeofday () in
let iterations_left iterno =
let now = Unix.gettimeofday () in
let iterations_left = time_left /. iteration_medium_cost in
int_of_float iterations_left
in
- let rec step goals theorems passive active iterno =
- if iterno > max_iterations then
- (ParamodulationFailure "No more iterations to spend")
+ let rec step bag goals passive active g_iterno s_iterno =
+ if g_iterno > goal_steps && s_iterno > saturation_steps then
+ (ParamodulationFailure ("No more iterations to spend",active,passive,bag))
else if Unix.gettimeofday () > max_time then
- (ParamodulationFailure "No more time to spend")
+ (ParamodulationFailure ("No more time to spend",active,passive,bag))
else
-(*
- let _ = prerr_endline "simpl goal with active" in
- let _ = <:start<simplify goal set active>> in
- let goals = simplify_goal_set env goals passive active in
- let _ = <:stop<simplify goal set active>> in
-*)
let _ =
- prerr_endline
- (Printf.sprintf "%d #ACTIVES: %d #PASSIVES: %d #GOALSET: %d(%d)\n"
- iterno (size_of_active active) (size_of_passive passive)
- (size_of_goal_set_a goals) (size_of_goal_set_p goals))
+ print_status (max g_iterno s_iterno) goals active passive
+(* Printf.eprintf ".%!"; *)
in
(* PRUNING OF PASSIVE THAT WILL NEVER BE PROCESSED *)
let passive =
- let selection_estimate = iterations_left iterno in
+ let selection_estimate = iterations_left (max g_iterno s_iterno) in
let kept = size_of_passive passive in
if kept > selection_estimate then
begin
passive
in
kept_clauses := (size_of_passive passive) + (size_of_active active);
- let goals = infer_goal_set env active goals in
- match check_if_goals_set_is_solved env active goals with
- | Some p ->
- prerr_endline
- (Printf.sprintf "Found a proof in: %f\n"
- (Unix.gettimeofday() -. initial_time));
- ParamodulationSuccess p
- | None ->
+ let bag, goals =
+ if g_iterno < goal_steps then
+ infer_goal_set bag env active goals
+ else
+ bag, goals
+ in
+ match check_if_goals_set_is_solved bag env active passive goals with
+ | bag, Some p ->
+ debug_print (lazy
+ (Printf.sprintf "\nFound a proof in: %f\n"
+ (Unix.gettimeofday() -. initial_time)));
+ ParamodulationSuccess (p,active,passive,bag)
+ | bag, None ->
(* SELECTION *)
if passive_is_empty passive then
- ParamodulationFailure "No more passive"(*maybe this is a success! *)
+ if no_more_passive_goals goals then
+ ParamodulationFailure
+ ("No more passive equations/goals",active,passive,bag)
+ (*maybe this is a success! *)
+ else
+ step bag goals passive active (g_iterno+1) (s_iterno+1)
else
begin
(* COLLECTION OF GARBAGED EQUALITIES *)
- if iterno mod 40 = 0 then
- begin
+ let bag =
+ if max g_iterno s_iterno mod 40 = 0 then
+ (print_status (max g_iterno s_iterno) goals active passive;
let active = List.map Equality.id_of (fst active) in
- let passive = List.map Equality.id_of (fst (fst passive)) in
+ let passive = List.map Equality.id_of (fst3 passive) in
let goal = ids_of_goal_set goals in
- Equality.collect active passive goal
- end;
- let current, passive = select env goals passive in
- let _ =
- List.iter
- (fun _,_,g ->
- prerr_endline (Printf.sprintf "Current goal = %s\n"
- (CicPp.pp g names)))
- (fst goals);
- prerr_endline (Printf.sprintf "Selected = %s\n"
- (Equality.string_of_equality ~env current))
- in
- (* SIMPLIFICATION OF CURRENT *)
- let res =
- forward_simplify eq_uri env (Positive, current) active
+ Equality.collect bag active passive goal)
+ else
+ bag
in
- match res with
- | None -> step goals theorems passive active (iterno+1)
- | Some current ->
- (* GENERATION OF NEW EQUATIONS *)
- prerr_endline "infer";
- let new' = infer eq_uri env current active in
- prerr_endline "infer goal";
- let goals = infer_goal_set_with_current env current goals in
- let active =
- let al, tbl = active in
- al @ [current], Indexing.index tbl current
- in
- (* FORWARD AND BACKWARD SIMPLIFICATION *)
- prerr_endline "fwd/back simpl";
- let rec simplify new' active passive =
- let new' =
- forward_simplify_new eq_uri env new' ~passive active
- in
- let active, passive, newa, retained, pruned =
- backward_simplify eq_uri env new' ~passive active
- in
- let passive =
- List.fold_left filter_dependent passive pruned
- in
- match newa, retained with
- | None, None -> active, passive, new'
- | Some p, None
- | None, Some p -> simplify (new' @ p) active passive
- | Some p, Some rp -> simplify (new' @ p @ rp) active passive
- in
- let active, passive, new' = simplify new' active passive in
- prerr_endline "simpl goal with new";
- let goals =
- let a,b,_ = build_table new' in
- let _ = <:start<simplify_goal_set new>> in
- let rc = simplify_goal_set env goals passive (a,b) in
- let _ = <:stop<simplify_goal_set new>> in
- rc
- in
- let passive = add_to_passive passive new' in
- step goals theorems passive active (iterno+1)
+ if s_iterno > saturation_steps then
+ step bag goals passive active (g_iterno+1) (s_iterno+1)
+ (* ParamodulationFailure ("max saturation steps",active,passive,bag) *)
+ else
+ let current, passive = select env goals passive in
+ match add_to_active_aux bag active passive env eq_uri current with
+ | None, active, passive, bag ->
+ step bag goals passive active (g_iterno+1) (s_iterno+1)
+ | Some new', active, passive, bag ->
+ let bag, active_goals, passive_goals =
+ infer_goal_set_with_current bag env current goals active
+ in
+ let goals =
+ let a,b,_ = build_table new' in
+ let rc =
+ simplify_goal_set bag env (active_goals,passive_goals) (a,b)
+ in
+ rc
+ in
+ step bag goals passive active (g_iterno+1) (s_iterno+1)
end
in
- step goals theorems passive active 1
+ step bag goals passive active 0 0
;;
-let rec saturate_equations eq_uri env goal accept_fun passive active =
+let rec saturate_equations bag eq_uri env goal accept_fun passive active =
elapsed_time := Unix.gettimeofday () -. !start_time;
if !elapsed_time > !time_limit then
- (active, passive)
+ bag, active, passive
else
let current, passive = select env ([goal],[]) passive in
- let res = forward_simplify eq_uri env (Positive, current) ~passive active in
+ let bag, res = forward_simplify bag eq_uri env current active in
match res with
| None ->
- saturate_equations eq_uri env goal accept_fun passive active
+ saturate_equations bag eq_uri env goal accept_fun passive active
| Some current ->
- debug_print (lazy (Printf.sprintf "selected: %s"
+ Utils.debug_print (lazy (Printf.sprintf "selected: %s"
(Equality.string_of_equality ~env current)));
- let new' = infer eq_uri env current active in
+ let bag, new' = infer bag eq_uri env current active in
let active =
if Equality.is_identity env current then active
else
let al, tbl = active in
al @ [current], Indexing.index tbl current
in
- let rec simplify new' active passive =
- let new' = forward_simplify_new eq_uri env new' ~passive active in
- let active, passive, newa, retained, pruned =
- backward_simplify eq_uri env new' ~passive active in
+ (* alla fine new' contiene anche le attive semplificate!
+ * quindi le aggiungo alle passive insieme alle new *)
+ let rec simplify bag new' active passive =
+ let bag, new' = forward_simplify_new bag eq_uri env new' active in
+ let bag, active, newa, pruned =
+ backward_simplify bag eq_uri env new' active in
let passive =
- List.fold_left filter_dependent passive pruned in
- match newa, retained with
- | None, None -> active, passive, new'
- | Some p, None
- | None, Some p -> simplify (new' @ p) active passive
- | Some p, Some rp -> simplify (new' @ p @ rp) active passive
+ List.fold_left (filter_dependent bag) passive pruned in
+ match newa with
+ | None -> bag, active, passive, new'
+ | Some p -> simplify bag (new' @ p) active passive
in
- let active, passive, new' = simplify new' active passive in
+ let bag, active, passive, new' = simplify bag new' active passive in
let _ =
- debug_print
+ Utils.debug_print
(lazy
(Printf.sprintf "active:\n%s\n"
(String.concat "\n"
(fst active)))))
in
let _ =
- debug_print
+ Utils.debug_print
(lazy
(Printf.sprintf "new':\n%s\n"
(String.concat "\n"
(Equality.string_of_equality ~env e)) new'))))
in
let new' = List.filter accept_fun new' in
- let passive = add_to_passive passive new' in
- saturate_equations eq_uri env goal accept_fun passive active
+ let passive = add_to_passive passive new' [] in
+ saturate_equations bag eq_uri env goal accept_fun passive active
;;
-let main dbd full term metasenv ugraph = ()
-(*
-let main dbd full term metasenv ugraph =
- let module C = Cic in
- let module T = CicTypeChecker in
- let module PET = ProofEngineTypes in
- let module PP = CicPp in
- let proof = None, (1, [], term)::metasenv, C.Meta (1, []), term in
- let status = PET.apply_tactic (PrimitiveTactics.intros_tac ()) (proof, 1) in
- let proof, goals = status in
- let goal' = List.nth goals 0 in
- let _, metasenv, meta_proof, _ = proof in
- let _, context, goal = CicUtil.lookup_meta goal' metasenv in
- let eq_indexes, equalities, maxm = find_equalities context proof in
- let lib_eq_uris, library_equalities, maxm =
-
- find_library_equalities dbd context (proof, goal') (maxm+2)
- in
- let library_equalities = List.map snd library_equalities in
- maxmeta := maxm+2; (* TODO ugly!! *)
- let irl = CicMkImplicit.identity_relocation_list_for_metavariable context in
- let new_meta_goal, metasenv, type_of_goal =
- let _, context, ty = CicUtil.lookup_meta goal' metasenv in
- debug_print
- (lazy
- (Printf.sprintf "\n\nTIPO DEL GOAL: %s\n\n" (CicPp.ppterm ty)));
- Cic.Meta (maxm+1, irl),
- (maxm+1, context, ty)::metasenv,
- ty
- in
- let env = (metasenv, context, ugraph) in
- let t1 = Unix.gettimeofday () in
- let theorems =
- if full then
- let theorems = find_library_theorems dbd env (proof, goal') lib_eq_uris in
- let context_hyp = find_context_hypotheses env eq_indexes in
- context_hyp @ theorems, []
- else
- let refl_equal =
- let us = UriManager.string_of_uri (LibraryObjects.eq_URI ()) in
- UriManager.uri_of_string (us ^ "#xpointer(1/1/1)")
- in
- let t = CicUtil.term_of_uri refl_equal in
- let ty, _ = CicTypeChecker.type_of_aux' [] [] t CicUniv.empty_ugraph in
- [(t, ty, [])], []
- in
- let t2 = Unix.gettimeofday () in
- debug_print
- (lazy
- (Printf.sprintf "Time to retrieve theorems: %.9f\n" (t2 -. t1)));
- let _ =
- debug_print
- (lazy
- (Printf.sprintf
- "Theorems:\n-------------------------------------\n%s\n"
- (String.concat "\n"
- (List.map
- (fun (t, ty, _) ->
- Printf.sprintf
- "Term: %s, type: %s" (CicPp.ppterm t) (CicPp.ppterm ty))
- (fst theorems)))))
- in
- (*try*)
- let goal =
- ([],Equality.BasicProof (Equality.empty_subst ,new_meta_goal)), [], goal
- in
- let equalities = simplify_equalities env
- (equalities@library_equalities) in
- let active = make_active () in
- let passive = make_passive equalities in
- Printf.printf "\ncurrent goal: %s\n"
- (let _, _, g = goal in CicPp.ppterm g);
- Printf.printf "\ncontext:\n%s\n" (PP.ppcontext context);
- Printf.printf "\nmetasenv:\n%s\n" (print_metasenv metasenv);
- Printf.printf "\nequalities:\n%s\n"
- (String.concat "\n"
- (List.map
- (Equality.string_of_equality ~env) equalities));
-(* (equalities @ library_equalities))); *)
- print_endline "--------------------------------------------------";
- let start = Unix.gettimeofday () in
- print_endline "GO!";
- start_time := Unix.gettimeofday ();
- let res =
- let goals = make_goals goal in
- (if !use_fullred then given_clause_fullred else given_clause_fullred)
- dbd env goals theorems passive active
- in
- let finish = Unix.gettimeofday () in
- let _ =
- match res with
- | ParamodulationFailure ->
- Printf.printf "NO proof found! :-(\n\n"
- | ParamodulationSuccess (Some ((cicproof,cicmenv),(proof, env))) ->
- Printf.printf "OK, found a proof!\n";
- let oldproof = Equation.build_proof_term proof in
- let newproof,_,newenv,_ =
- CicRefine.type_of_aux'
- cicmenv context cicproof CicUniv.empty_ugraph
- in
- (* REMEMBER: we have to instantiate meta_proof, we should use
- apply the "apply" tactic to proof and status
- *)
- let names = names_of_context context in
- prerr_endline "OLD PROOF";
- print_endline (PP.pp proof names);
- prerr_endline "NEW PROOF";
- print_endline (PP.pp newproof names);
- let newmetasenv =
- List.fold_left
- (fun m eq ->
- let (_, _, _, menv,_) = Equality.open_equality eq in
- m @ menv)
- metasenv equalities
- in
- let _ =
- (*try*)
- let ty, ug =
- CicTypeChecker.type_of_aux' newmetasenv context proof ugraph
- in
- print_endline (string_of_float (finish -. start));
- Printf.printf
- "\nGOAL was: %s\nPROOF has type: %s\nconvertible?: %s\n\n"
- (CicPp.pp type_of_goal names) (CicPp.pp ty names)
- (string_of_bool
- (fst (CicReduction.are_convertible
- context type_of_goal ty ug)));
- (*with e ->
- Printf.printf "\nEXCEPTION!!! %s\n" (Printexc.to_string e);
- Printf.printf "MAXMETA USED: %d\n" !maxmeta;
- print_endline (string_of_float (finish -. start));*)
- in
- ()
-
- | ParamodulationSuccess None ->
- Printf.printf "Success, but no proof?!?\n\n"
- in
- if Utils.time then
- begin
- prerr_endline
- ((Printf.sprintf ("infer_time: %.9f\nforward_simpl_time: %.9f\n" ^^
- "forward_simpl_new_time: %.9f\n" ^^
- "backward_simpl_time: %.9f\n")
- !infer_time !forward_simpl_time !forward_simpl_new_time
- !backward_simpl_time) ^
- (Printf.sprintf "passive_maintainance_time: %.9f\n"
- !passive_maintainance_time) ^
- (Printf.sprintf " successful unification/matching time: %.9f\n"
- !Indexing.match_unif_time_ok) ^
- (Printf.sprintf " failed unification/matching time: %.9f\n"
- !Indexing.match_unif_time_no) ^
- (Printf.sprintf " indexing retrieval time: %.9f\n"
- !Indexing.indexing_retrieval_time) ^
- (Printf.sprintf " demodulate_term.build_newtarget_time: %.9f\n"
- !Indexing.build_newtarget_time) ^
- (Printf.sprintf "derived %d clauses, kept %d clauses.\n"
- !derived_clauses !kept_clauses))
- end
-(*
- with exc ->
- print_endline ("EXCEPTION: " ^ (Printexc.to_string exc));
- raise exc
-*)
-;;
-*)
-
let default_depth = !maxdepth
and default_width = !maxwidth;;
let reset_refs () =
- maxmeta := 0;
symbols_counter := 0;
weight_age_counter := !weight_age_ratio;
processed_clauses := 0;
passive_maintainance_time := 0.;
derived_clauses := 0;
kept_clauses := 0;
- Equality.reset ();
;;
+let add_to_active bag active passive env ty term newmetas =
+ reset_refs ();
+ match LibraryObjects.eq_URI () with
+ | None -> active, passive, bag
+ | Some eq_uri ->
+ try
+ let bag, current = Equality.equality_of_term bag term ty newmetas in
+ let w,_,_,_,_ = Equality.open_equality current in
+ if w > 100 then
+ (HLog.debug
+ ("skipping giant " ^ CicPp.ppterm term ^ " of weight " ^
+ string_of_int w); active, passive, bag)
+ else
+ let bag, current = Equality.fix_metas bag current in
+ match add_to_active_aux bag active passive env eq_uri current with
+ | _,a,p,b -> a,p,b
+ with
+ | Equality.TermIsNotAnEquality -> active, passive, bag
+;;
+
+
let eq_of_goal = function
| Cic.Appl [Cic.MutInd(uri,0,_);_;_;_] when LibraryObjects.is_eq_URI uri ->
uri
| _ -> raise (ProofEngineTypes.Fail (lazy ("The goal is not an equality ")))
;;
-let saturate
- dbd ?(full=false) ?(depth=default_depth) ?(width=default_width) status =
- let module C = Cic in
- reset_refs ();
- Indexing.init_index ();
- maxdepth := depth;
- maxwidth := width;
-(* CicUnification.unif_ty := false;*)
+let eq_and_ty_of_goal = function
+ | Cic.Appl [Cic.MutInd(uri,0,_);t;_;_] when LibraryObjects.is_eq_URI uri ->
+ uri,t
+ | _ -> raise (ProofEngineTypes.Fail (lazy ("The goal is not an equality ")))
+;;
+
+(* fix proof takes in input a term and try to build a metasenv for it *)
+
+let fix_proof metasenv context all_implicits p =
+ let rec aux metasenv n p =
+ match p with
+ | Cic.Meta (i,_) ->
+ if all_implicits then
+ metasenv,Cic.Implicit None
+ else
+ let irl =
+ CicMkImplicit.identity_relocation_list_for_metavariable context
+ in
+ let meta = CicSubstitution.lift n (Cic.Meta (i,irl)) in
+ let metasenv =
+ try
+ let _ = CicUtil.lookup_meta i metasenv in metasenv
+ with CicUtil.Meta_not_found _ ->
+ debug_print (lazy ("not found: "^(string_of_int i)));
+ let metasenv,j = CicMkImplicit.mk_implicit_type metasenv [] context in
+ (i,context,Cic.Meta(j,irl))::metasenv
+ in
+ metasenv,meta
+ | Cic.Appl l ->
+ let metasenv,l=
+ List.fold_right
+ (fun a (metasenv,l) ->
+ let metasenv,a' = aux metasenv n a in
+ metasenv,a'::l)
+ l (metasenv,[])
+ in metasenv,Cic.Appl l
+ | Cic.Lambda(name,s,t) ->
+ let metasenv,s = aux metasenv n s in
+ let metasenv,t = aux metasenv (n+1) t in
+ metasenv,Cic.Lambda(name,s,t)
+ | Cic.Prod(name,s,t) ->
+ let metasenv,s = aux metasenv n s in
+ let metasenv,t = aux metasenv (n+1) t in
+ metasenv,Cic.Prod(name,s,t)
+ | Cic.LetIn(name,s,ty,t) ->
+ let metasenv,s = aux metasenv n s in
+ let metasenv,ty = aux metasenv n ty in
+ let metasenv,t = aux metasenv (n+1) t in
+ metasenv,Cic.LetIn(name,s,ty,t)
+ | Cic.Const(uri,ens) ->
+ let metasenv,ens =
+ List.fold_right
+ (fun (v,a) (metasenv,ens) ->
+ let metasenv,a' = aux metasenv n a in
+ metasenv,(v,a')::ens)
+ ens (metasenv,[])
+ in
+ metasenv,Cic.Const(uri,ens)
+ | t -> metasenv,t
+ in
+ aux metasenv 0 p
+;;
+
+let fix_metasenv context metasenv =
+ List.fold_left
+ (fun m (i,c,t) ->
+ let m,t = fix_proof m context false t in
+ let m = List.filter (fun (j,_,_) -> j<>i) m in
+ (i,context,t)::m)
+ metasenv metasenv
+;;
+
+
+(* status: input proof status
+ * goalproof: forward steps on goal
+ * newproof: backward steps
+ * subsumption_id: the equation used if goal is closed by subsumption
+ * (0 if not closed by subsumption) (DEBUGGING: can be safely removed)
+ * subsumption_subst: subst to make newproof and goalproof match
+ * proof_menv: final metasenv
+ *)
+
+let build_proof
+ bag status
+ goalproof newproof subsumption_id subsumption_subst proof_menv
+=
+ if proof_menv = [] then debug_print (lazy "+++++++++++++++VUOTA")
+ else debug_print (lazy (CicMetaSubst.ppmetasenv [] proof_menv));
let proof, goalno = status in
- let uri, metasenv, meta_proof, term_to_prove = proof in
+ let uri, metasenv, _subst, meta_proof, term_to_prove, attrs = proof in
let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
let eq_uri = eq_of_goal type_of_goal in
- let names = names_of_context context in
- let eq_indexes, equalities, maxm = find_equalities context proof in
- let ugraph = CicUniv.empty_ugraph in
- let env = (metasenv, context, ugraph) in
- let cleaned_goal = Utils.remove_local_context type_of_goal in
- let goal = [], List.filter (fun (i,_,_)->i<>goalno) metasenv, cleaned_goal in
- let res, time =
- let t1 = Unix.gettimeofday () in
- let lib_eq_uris, library_equalities, maxm =
- find_library_equalities dbd context (proof, goalno) (maxm+2)
- in
- let library_equalities = List.map snd library_equalities in
- let t2 = Unix.gettimeofday () in
- maxmeta := maxm+2;
- let equalities =
- simplify_equalities eq_uri env (equalities@library_equalities)
- in
- debug_print
- (lazy
- (Printf.sprintf "Time to retrieve equalities: %.9f\n" (t2 -. t1)));
- let t1 = Unix.gettimeofday () in
- let theorems =
- if full then
- let thms = find_library_theorems dbd env (proof, goalno) lib_eq_uris in
- let context_hyp = find_context_hypotheses env eq_indexes in
- context_hyp @ thms, []
- else
- let refl_equal = LibraryObjects.eq_refl_URI ~eq:eq_uri in
- let t = CicUtil.term_of_uri refl_equal in
- let ty, _ = CicTypeChecker.type_of_aux' [] [] t CicUniv.empty_ugraph in
- [(t, ty, [])], []
- in
- let t2 = Unix.gettimeofday () in
- let _ =
- debug_print
- (lazy
- (Printf.sprintf
- "Theorems:\n-------------------------------------\n%s\n"
- (String.concat "\n"
- (List.map
- (fun (t, ty, _) ->
- Printf.sprintf
- "Term: %s, type: %s"
- (CicPp.ppterm t) (CicPp.ppterm ty))
- (fst theorems)))));
- debug_print
- (lazy
- (Printf.sprintf "Time to retrieve theorems: %.9f\n" (t2 -. t1)));
- in
- let active = make_active () in
- let passive = make_passive equalities in
- let start = Unix.gettimeofday () in
- let res =
+ let names = Utils.names_of_context context in
+ debug_print (lazy "Proof:");
+ debug_print (lazy
+ (Equality.pp_proof bag names goalproof newproof subsumption_subst
+ subsumption_id type_of_goal));
(*
- let goals = make_goals goal in
- given_clause_fullred dbd env goals theorems passive active
+ prerr_endline ("max weight: " ^
+ (string_of_int (Equality.max_weight goalproof newproof)));
*)
- let goals = make_goal_set goal in
- let max_iterations = 10000 in
- let max_time = Unix.gettimeofday () +. 600. (* minutes *) in
- given_clause
- eq_uri env goals theorems passive active max_iterations max_time
- in
- let finish = Unix.gettimeofday () in
- (res, finish -. start)
+ (* generation of the CIC proof *)
+ (* let metasenv' = List.filter (fun i,_,_ -> i<>goalno) metasenv in *)
+ let side_effects =
+ List.filter (fun i -> i <> goalno)
+ (ProofEngineHelpers.compare_metasenvs
+ ~newmetasenv:metasenv ~oldmetasenv:proof_menv) in
+ let goal_proof, side_effects_t =
+ let initial = Equality.add_subst subsumption_subst newproof in
+ Equality.build_goal_proof bag
+ eq_uri goalproof initial type_of_goal side_effects
+ context proof_menv
in
- match res with
- | ParamodulationFailure s ->
- raise (ProofEngineTypes.Fail (lazy ("NO proof found: " ^ s)))
- | ParamodulationSuccess
- (goalproof,newproof,subsumption_id,subsumption_subst, proof_menv) ->
- prerr_endline "OK, found a proof!";
- prerr_endline
- (Equality.pp_proof names goalproof newproof subsumption_subst
- subsumption_id type_of_goal);
- prerr_endline (CicMetaSubst.ppmetasenv [] proof_menv);
- prerr_endline "ENDOFPROOFS";
- (* generation of the CIC proof *)
- let side_effects =
- List.filter (fun i -> i <> goalno)
- (ProofEngineHelpers.compare_metasenvs
- ~newmetasenv:metasenv ~oldmetasenv:proof_menv)
- in
- let goal_proof, side_effects_t =
- let initial = Equality.add_subst subsumption_subst newproof in
- Equality.build_goal_proof
- eq_uri goalproof initial type_of_goal side_effects
- in
- let goal_proof = Subst.apply_subst subsumption_subst goal_proof in
+(* Equality.draw_proof bag names goalproof newproof subsumption_id; *)
+ let goal_proof = Subst.apply_subst subsumption_subst goal_proof in
+ (* assert (metasenv=[]); *)
+ let real_menv = fix_metasenv context (proof_menv@metasenv) in
+ let real_menv,goal_proof =
+ fix_proof real_menv context false goal_proof in
+(*
+ let real_menv,fixed_proof = fix_proof proof_menv context false goal_proof in
+ (* prerr_endline ("PROOF: " ^ CicPp.pp goal_proof names); *)
+*)
+ let pp_error goal_proof names error exn =
+ prerr_endline "THE PROOF DOES NOT TYPECHECK! <begin>";
+ prerr_endline (CicPp.pp goal_proof names);
+ prerr_endline "THE PROOF DOES NOT TYPECHECK!";
+ prerr_endline error;
+ prerr_endline "THE PROOF DOES NOT TYPECHECK! <end>";
+ raise exn
+ in
+ let old_insert_coercions = !CicRefine.insert_coercions in
+ let goal_proof,goal_ty,real_menv,_ =
+ (* prerr_endline ("parte la refine per: " ^ (CicPp.pp goal_proof names)); *)
+ try
+ debug_print (lazy (CicPp.ppterm goal_proof));
+ CicRefine.insert_coercions := false;
+ let res =
+ CicRefine.type_of_aux'
+ real_menv context goal_proof CicUniv.empty_ugraph
+ in
+ CicRefine.insert_coercions := old_insert_coercions;
+ res
+ with
+ | CicRefine.RefineFailure s
+ | CicRefine.Uncertain s
+ | CicRefine.AssertFailure s as exn ->
+ CicRefine.insert_coercions := old_insert_coercions;
+ pp_error goal_proof names (Lazy.force s) exn
+ | CicUtil.Meta_not_found i as exn ->
+ CicRefine.insert_coercions := old_insert_coercions;
+ pp_error goal_proof names ("META NOT FOUND: "^string_of_int i) exn
+ | Invalid_argument "list_fold_left2" as exn ->
+ CicRefine.insert_coercions := old_insert_coercions;
+ pp_error goal_proof names "Invalid_argument: list_fold_left2" exn
+ | exn ->
+ CicRefine.insert_coercions := old_insert_coercions;
+ raise exn
+ in
+ let subst_side_effects,real_menv,_ =
+ try
+ CicUnification.fo_unif_subst [] context real_menv
+ goal_ty type_of_goal CicUniv.empty_ugraph
+ with
+ | CicUnification.UnificationFailure s
+ | CicUnification.Uncertain s
+ | CicUnification.AssertFailure s -> assert false
+ (* fail "Maybe the local context of metas in the goal was not an IRL" s *)
+ in
+ Utils.debug_print (lazy "+++++++++++++ FINE UNIF");
+ let final_subst =
+ (goalno,(context,goal_proof,type_of_goal))::subst_side_effects
+ in
+(*
+ let metas_of_proof = Utils.metas_of_term goal_proof in
+*)
+ let proof, real_metasenv =
+ ProofEngineHelpers.subst_meta_and_metasenv_in_proof
+ proof goalno final_subst
+ (List.filter (fun i,_,_ -> i<>goalno ) real_menv)
+ in
+ let open_goals =
+ (ProofEngineHelpers.compare_metasenvs
+ ~oldmetasenv:metasenv ~newmetasenv:real_metasenv) in
+(*
+ let open_goals =
+ List.map (fun i,_,_ -> i) real_metasenv in
+*)
+ final_subst, proof, open_goals
+
+
+(*
+
let metas_still_open_in_proof = Utils.metas_of_term goal_proof in
-(*prerr_endline (CicPp.pp goal_proof names);*)
- (* ?? *)
+ (* prerr_endline (CicPp.pp goal_proof names); *)
let goal_proof = (* Subst.apply_subst subsumption_subst *) goal_proof in
let side_effects_t =
List.map (Subst.apply_subst subsumption_subst) side_effects_t
in
(* replacing fake mets with real ones *)
- prerr_endline "replacing metas...";
+ (* prerr_endline "replacing metas..."; *)
let irl=CicMkImplicit.identity_relocation_list_for_metavariable context in
- let goal_proof_menv, what, with_what,free_meta =
+ CicMetaSubst.ppmetasenv [] proof_menv;
+ let what, with_what =
List.fold_left
- (fun (acc1,acc2,acc3,uniq) (i,_,ty) ->
- match uniq with
- | Some m ->
- acc1, (Cic.Meta(i,[]))::acc2, m::acc3, uniq
- | None ->
- [i,context,ty], (Cic.Meta(i,[]))::acc2,
- (Cic.Meta(i,irl)) ::acc3,Some (Cic.Meta(i,irl)))
- ([],[],[],None)
+ (fun (acc1,acc2) i ->
+ (Cic.Meta(i,[]))::acc1, (Cic.Implicit None)::acc2)
+ ([],[])
+ metas_still_open_in_proof
+(*
(List.filter
- (fun (i,_,_) -> List.mem i metas_still_open_in_proof)
- proof_menv)
+ (fun (i,_,_) ->
+ List.mem i metas_still_open_in_proof
+ (*&& not(List.mem i metas_still_open_in_goal)*))
+ proof_menv)
+*)
+ in
+ let goal_proof_menv =
+ List.filter
+ (fun (i,_,_) -> List.mem i metas_still_open_in_proof)
+ proof_menv
in
let replace where =
(* we need this fake equality since the metas of the hypothesis may be
(ProofEngineHelpers.compare_metasenvs
~oldmetasenv:metasenv ~newmetasenv:goal_proof_menv)
in
-prerr_endline ("freemetas: " ^ String.concat "," (List.map string_of_int free_metas) );
+ (* prerr_endline
+ * ("freemetas: " ^
+ * String.concat "," (List.map string_of_int free_metas) ); *)
(* check/refine/... build the new proof *)
let replaced_goal =
ProofEngineReduction.replace
~equality:(fun i t -> match t with Cic.Meta(j,_)->j=i|_->false)
~where:type_of_goal
in
- let subst_side_effects,real_menv,_ =
- let fail t s = raise (ProofEngineTypes.Fail (lazy (t^Lazy.force s))) in
- let free_metas_menv =
- List.map (fun i -> CicUtil.lookup_meta i goal_proof_menv) free_metas
- in
+ let goal_proof,goal_ty,real_menv,_ =
try
- CicUnification.fo_unif_subst [] context (metasenv @ free_metas_menv)
- replaced_goal type_of_goal CicUniv.empty_ugraph
- with
- | CicUnification.UnificationFailure s
- | CicUnification.Uncertain s
- | CicUnification.AssertFailure s ->
- fail "Maybe the local context of metas in the goal was not an IRL" s
- in
- let final_subst =
- (goalno,(context,goal_proof,type_of_goal))::subst_side_effects
- in
-prerr_endline ("MENVreal_menv: " ^ CicMetaSubst.ppmetasenv [] real_menv);
- let _ =
- try
- CicTypeChecker.type_of_aux' real_menv context goal_proof
+ CicRefine.type_of_aux' metasenv context goal_proof
CicUniv.empty_ugraph
with
| CicUtil.Meta_not_found _
- | CicTypeChecker.TypeCheckerFailure _
- | CicTypeChecker.AssertFailure _
+ | CicRefine.RefineFailure _
+ | CicRefine.Uncertain _
+ | CicRefine.AssertFailure _
| Invalid_argument "list_fold_left2" as exn ->
prerr_endline "THE PROOF DOES NOT TYPECHECK!";
prerr_endline (CicPp.pp goal_proof names);
prerr_endline "THE PROOF DOES NOT TYPECHECK!";
raise exn
+ in
+ prerr_endline "+++++++++++++ METASENV";
+ prerr_endline
+ (CicMetaSubst.ppmetasenv [] real_menv);
+ let subst_side_effects,real_menv,_ =
+(*
+ prerr_endline ("XX type_of_goal " ^ CicPp.ppterm type_of_goal);
+ prerr_endline ("XX replaced_goal " ^ CicPp.ppterm replaced_goal);
+ prerr_endline ("XX metasenv " ^
+ CicMetaSubst.ppmetasenv [] (metasenv @ free_metas_menv));
+*)
+ try
+ CicUnification.fo_unif_subst [] context real_menv
+ goal_ty type_of_goal CicUniv.empty_ugraph
+ with
+ | CicUnification.UnificationFailure s
+ | CicUnification.Uncertain s
+ | CicUnification.AssertFailure s -> assert false
+(* fail "Maybe the local context of metas in the goal was not an IRL" s *)
in
+ let final_subst =
+ (goalno,(context,goal_proof,type_of_goal))::subst_side_effects
+ in
+(*
+ let metas_of_proof = Utils.metas_of_term goal_proof in
+*)
let proof, real_metasenv =
ProofEngineHelpers.subst_meta_and_metasenv_in_proof
- proof goalno (CicMetaSubst.apply_subst final_subst) real_menv
+ proof goalno (CicMetaSubst.apply_subst final_subst)
+ (List.filter (fun i,_,_ -> i<>goalno ) real_menv)
in
- let open_goals =
+ let open_goals =
+ List.map (fun i,_,_ -> i) real_metasenv in
+
+(*
+ HExtlib.list_uniq (List.sort Pervasives.compare metas_of_proof)
+ in *)
+(*
match free_meta with Some(Cic.Meta(m,_)) when m<>goalno ->[m] | _ ->[]
in
+*)
+(*
Printf.eprintf
"GOALS APERTI: %s\nMETASENV PRIMA:\n%s\nMETASENV DOPO:\n%s\n"
(String.concat ", " (List.map string_of_int open_goals))
(CicMetaSubst.ppmetasenv [] metasenv)
(CicMetaSubst.ppmetasenv [] real_metasenv);
- prerr_endline (Printf.sprintf "\nTIME NEEDED: %8.2f" time);
- proof, open_goals
+*)
+ final_subst, proof, open_goals
;;
+*)
-let retrieve_and_print dbd term metasenv ugraph =
- let module C = Cic in
- let module T = CicTypeChecker in
- let module PET = ProofEngineTypes in
- let module PP = CicPp in
- let proof = None, (1, [], term)::metasenv, C.Meta (1, []), term in
- let status = PET.apply_tactic (PrimitiveTactics.intros_tac ()) (proof, 1) in
- let proof, goals = status in
- let goal' = List.nth goals 0 in
- let uri, metasenv, meta_proof, term_to_prove = proof in
- let _, context, type_of_goal = CicUtil.lookup_meta goal' metasenv in
- let eq_uri = eq_of_goal type_of_goal in
- let eq_indexes, equalities, maxm = find_equalities context proof in
- let ugraph = CicUniv.empty_ugraph in
- let env = (metasenv, context, ugraph) in
- let t1 = Unix.gettimeofday () in
- let lib_eq_uris, library_equalities, maxm =
- find_library_equalities dbd context (proof, goal') (maxm+2) in
- let t2 = Unix.gettimeofday () in
- maxmeta := maxm+2;
- let equalities = (* equalities @ *) library_equalities in
- debug_print
- (lazy
- (Printf.sprintf "\n\nequalities:\n%s\n"
- (String.concat "\n"
- (List.map
- (fun (u, e) ->
-(* Printf.sprintf "%s: %s" *)
- (UriManager.string_of_uri u)
-(* (string_of_equality e) *)
- )
- equalities))));
- debug_print (lazy "RETR: SIMPLYFYING EQUALITIES...");
- let rec simpl e others others_simpl =
- let (u, e) = e in
- let active = List.map (fun (u, e) -> (Positive, e))
- (others @ others_simpl) in
- let tbl =
- List.fold_left
- (fun t (_, e) -> Indexing.index t e)
- Indexing.empty active
- in
- let res = forward_simplify eq_uri env (Positive, e) (active, tbl) in
- match others with
- | hd::tl -> (
- match res with
- | None -> simpl hd tl others_simpl
- | Some e -> simpl hd tl ((u, e)::others_simpl)
- )
- | [] -> (
- match res with
- | None -> others_simpl
- | Some e -> (u, e)::others_simpl
- )
- in
- let _equalities =
- match equalities with
- | [] -> []
- | hd::tl ->
- let others = tl in (* List.map (fun e -> (Positive, e)) tl in *)
- let res =
- List.rev (simpl (*(Positive,*) hd others [])
- in
- debug_print
- (lazy
- (Printf.sprintf "\nequalities AFTER:\n%s\n"
- (String.concat "\n"
- (List.map
- (fun (u, e) ->
- Printf.sprintf "%s: %s"
- (UriManager.string_of_uri u)
- (Equality.string_of_equality e)
- )
- res))));
- res in
- debug_print
- (lazy
- (Printf.sprintf "Time to retrieve equalities: %.9f\n" (t2 -. t1)))
+(* **************** HERE ENDS THE PARAMODULATION STUFF ******************** *)
+
+(* exported functions *)
+
+let pump_actives context bag active passive saturation_steps max_time =
+ reset_refs();
+(*
+ let max_l l =
+ List.fold_left
+ (fun acc e -> let _,_,_,menv,_ = Equality.open_equality e in
+ List.fold_left (fun acc (i,_,_) -> max i acc) acc menv)
+ 0 l in
+*)
+(* let active_l = fst active in *)
+(* let passive_l = fst passive in *)
+(* let ma = max_l active_l in *)
+(* let mp = max_l passive_l in *)
+ match LibraryObjects.eq_URI () with
+ | None -> active, passive, bag
+ | Some eq_uri ->
+ let env = [],context,CicUniv.empty_ugraph in
+ (match
+ given_clause bag eq_uri env ([],[])
+ passive active 0 saturation_steps max_time
+ with
+ | ParamodulationFailure (_,a,p,b) ->
+ a, p, b
+ | ParamodulationSuccess _ ->
+ assert false)
+;;
+
+let all_subsumed bag status active passive =
+ let proof, goalno = status in
+ let uri, metasenv, _subst, meta_proof, term_to_prove, attrs = proof in
+ let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
+ let env = metasenv,context,CicUniv.empty_ugraph in
+ let cleaned_goal = Utils.remove_local_context type_of_goal in
+ let canonical_menv,other_menv =
+ List.partition (fun (_,c,_) -> c = context) metasenv in
+ (* prerr_endline ("other menv = " ^ (CicMetaSubst.ppmetasenv [] other_menv)); *)
+ let metasenv = List.map (fun (i,_,ty)-> (i,[],ty)) canonical_menv in
+ let goal = [], List.filter (fun (i,_,_)->i<>goalno) metasenv, cleaned_goal in
+ debug_print (lazy (string_of_int (List.length (fst active))));
+ (* we simplify using both actives passives *)
+ let table =
+ List.fold_left
+ (fun (l,tbl) eq -> eq::l,(Indexing.index tbl eq))
+ active (list_of_passive passive) in
+ let (_,_,ty) = goal in
+ debug_print (lazy ("prima " ^ CicPp.ppterm ty));
+ let _,goal = simplify_goal bag env goal table in
+ let (_,_,ty) = goal in
+ debug_print (lazy ("in mezzo " ^ CicPp.ppterm ty));
+ let bag, subsumed = find_all_subsumed bag env (snd table) goal in
+ debug_print (lazy ("dopo " ^ CicPp.ppterm ty));
+ let subsumed_or_id =
+ match (check_if_goal_is_identity env goal) with
+ None -> subsumed
+ | Some id -> id::subsumed in
+ debug_print (lazy "dopo subsumed");
+ let res =
+ List.map
+ (fun
+ (goalproof,newproof,subsumption_id,subsumption_subst, proof_menv) ->
+ let subst, proof, gl =
+ build_proof bag
+ status goalproof newproof subsumption_id subsumption_subst proof_menv
+ in
+ let uri, metasenv, subst, meta_proof, term_to_prove, attrs = proof in
+ let newmetasenv =
+ other_menv @
+ List.filter
+ (fun x,_,_ -> not (List.exists (fun y,_,_ -> x=y) other_menv)) metasenv
+ in
+ let proof = uri, newmetasenv, subst, meta_proof, term_to_prove, attrs in
+ (subst, proof,gl)) subsumed_or_id
+ in
+ res
;;
-let main_demod_equalities dbd term metasenv ugraph =
- let module C = Cic in
- let module T = CicTypeChecker in
- let module PET = ProofEngineTypes in
- let module PP = CicPp in
- let proof = None, (1, [], term)::metasenv, C.Meta (1, []), term in
- let status = PET.apply_tactic (PrimitiveTactics.intros_tac ()) (proof, 1) in
- let proof, goals = status in
- let goal' = List.nth goals 0 in
- let _, metasenv, meta_proof, _ = proof in
- let _, context, goal = CicUtil.lookup_meta goal' metasenv in
- let eq_uri = eq_of_goal goal in
- let eq_indexes, equalities, maxm = find_equalities context proof in
- let lib_eq_uris, library_equalities, maxm =
- find_library_equalities dbd context (proof, goal') (maxm+2)
+let given_clause
+ bag status active passive goal_steps saturation_steps max_time
+=
+ reset_refs();
+ let active_l = fst active in
+ let proof, goalno = status in
+ let uri, metasenv, _subst, meta_proof, term_to_prove, attrs = proof in
+ let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
+ let eq_uri = eq_of_goal type_of_goal in
+ let cleaned_goal = Utils.remove_local_context type_of_goal in
+ let metas_occurring_in_goal = CicUtil.metas_of_term cleaned_goal in
+ let canonical_menv,other_menv =
+ List.partition (fun (_,c,_) -> c = context) metasenv in
+ Utils.set_goal_symbols cleaned_goal; (* DISACTIVATED *)
+ let canonical_menv =
+ List.map
+ (fun (i,_,ty)-> (i,[],Utils.remove_local_context ty)) canonical_menv
in
- let library_equalities = List.map snd library_equalities in
- maxmeta := maxm+2; (* TODO ugly!! *)
- let irl = CicMkImplicit.identity_relocation_list_for_metavariable context in
- let new_meta_goal, metasenv, type_of_goal =
- let _, context, ty = CicUtil.lookup_meta goal' metasenv in
- debug_print
- (lazy
- (Printf.sprintf "\n\nTRYING TO INFER EQUALITIES MATCHING: %s\n\n"
- (CicPp.ppterm ty)));
- Cic.Meta (maxm+1, irl),
- (maxm+1, context, ty)::metasenv,
- ty
+ let metasenv' =
+ List.filter
+ (fun (i,_,_)-> i<>goalno && List.mem_assoc i metas_occurring_in_goal)
+ canonical_menv
in
- let env = (metasenv, context, ugraph) in
- (*try*)
- let goal = [], [], goal
- in
- let equalities =
- simplify_equalities eq_uri env (equalities@library_equalities)
- in
- let active = make_active () in
- let passive = make_passive equalities in
- Printf.printf "\ncontext:\n%s\n" (PP.ppcontext context);
- Printf.printf "\nmetasenv:\n%s\n" (print_metasenv metasenv);
- Printf.printf "\nequalities:\n%s\n"
- (String.concat "\n"
- (List.map
- (Equality.string_of_equality ~env) equalities));
- print_endline "--------------------------------------------------";
- print_endline "GO!";
- start_time := Unix.gettimeofday ();
- if !time_limit < 1. then time_limit := 60.;
- let ra, rp =
- saturate_equations eq_uri env goal (fun e -> true) passive active
- in
-
- let initial =
- List.fold_left (fun s e -> EqualitySet.add e s)
- EqualitySet.empty equalities
- in
- let addfun s e =
- if not (EqualitySet.mem e initial) then EqualitySet.add e s else s
- in
-
- let passive =
- match rp with
- | (p, _), _ ->
- EqualitySet.elements (List.fold_left addfun EqualitySet.empty p)
- in
- let active =
- let l = fst ra in
- EqualitySet.elements (List.fold_left addfun EqualitySet.empty l)
+ let goal = [], metasenv', cleaned_goal in
+ let env = metasenv,context,CicUniv.empty_ugraph in
+ debug_print (lazy ">>>>>> ACTIVES >>>>>>>>");
+ List.iter (fun e -> debug_print (lazy (Equality.string_of_equality ~env e)))
+ active_l;
+ debug_print (lazy ">>>>>>>>>>>>>>");
+ let goals = make_goal_set goal in
+ match
+ given_clause bag eq_uri env goals passive active
+ goal_steps saturation_steps max_time
+ with
+ | ParamodulationFailure (msg,a,p,b) ->
+ if Utils.debug then prerr_endline msg;
+ None, a, p, b
+ | ParamodulationSuccess
+ ((goalproof,newproof,subsumption_id,subsumption_subst, proof_menv),a,p,b) ->
+ let subst, proof, gl =
+ build_proof b
+ status goalproof newproof subsumption_id subsumption_subst proof_menv
in
- Printf.printf "\n\nRESULTS:\nActive:\n%s\n\nPassive:\n%s\n"
- (String.concat "\n" (List.map (Equality.string_of_equality ~env) active))
- (* (String.concat "\n"
- (List.map (fun e -> CicPp.ppterm (term_of_equality e)) active)) *)
-(* (String.concat "\n" (List.map (string_of_equality ~env) passive)); *)
- (String.concat "\n"
- (List.map
- (fun e -> CicPp.ppterm (Equality.term_of_equality eq_uri e))
- passive));
- print_newline ();
-(*
- with e ->
- debug_print (lazy ("EXCEPTION: " ^ (Printexc.to_string e)))
-*)
+ let uri, metasenv, subst, meta_proof, term_to_prove, attrs = proof in
+ let proof = uri, other_menv@metasenv, subst, meta_proof, term_to_prove, attrs in
+ Some (subst, proof,gl),a,p, b
;;
-let demodulate_tac ~dbd ~pattern ((proof,goal)(*s initialstatus*)) =
- let module I = Inference in
- let curi,metasenv,pbo,pty = proof in
- let metano,context,ty = CicUtil.lookup_meta goal metasenv in
- let eq_uri = eq_of_goal ty in
- let eq_indexes, equalities, maxm =
- Inference.find_equalities context proof
+let solve_narrowing bag status active passive goal_steps =
+ let proof, goalno = status in
+ let uri, metasenv, _subst, meta_proof, term_to_prove, attrs = proof in
+ let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
+ let cleaned_goal = Utils.remove_local_context type_of_goal in
+ let metas_occurring_in_goal = CicUtil.metas_of_term cleaned_goal in
+ let canonical_menv,other_menv =
+ List.partition (fun (_,c,_) -> c = context) metasenv in
+ let canonical_menv =
+ List.map
+ (fun (i,_,ty)-> (i,[],Utils.remove_local_context ty)) canonical_menv
in
- let lib_eq_uris, library_equalities, maxm =
- I.find_library_equalities dbd context (proof, goal) (maxm+2) in
- if library_equalities = [] then prerr_endline "VUOTA!!!";
- let irl = CicMkImplicit.identity_relocation_list_for_metavariable context in
- let library_equalities = List.map snd library_equalities in
- let initgoal = [], [], ty in
- let env = (metasenv, context, CicUniv.empty_ugraph) in
- let equalities =
- simplify_equalities eq_uri env (equalities@library_equalities)
- in
- let table =
- List.fold_left
- (fun tbl eq -> Indexing.index tbl eq)
- Indexing.empty equalities
+ let metasenv' =
+ List.filter
+ (fun (i,_,_)-> i<>goalno && List.mem_assoc i metas_occurring_in_goal)
+ canonical_menv
in
- let changed,(newproof,newmetasenv, newty) =
- Indexing.demodulation_goal
- (metasenv,context,CicUniv.empty_ugraph) table initgoal
+ let goal = [], metasenv', cleaned_goal in
+ let env = metasenv,context,CicUniv.empty_ugraph in
+ let goals =
+ let table = List.fold_left Indexing.index (last passive) (fst active) in
+ goal :: Indexing.demodulation_all_goal bag env table goal 4
in
- if changed then
- begin
- let opengoal = Equality.Exact (Cic.Meta(maxm,irl)) in
- let proofterm,_ =
- Equality.build_goal_proof eq_uri newproof opengoal ty []
- in
- let extended_metasenv = (maxm,context,newty)::metasenv in
- let extended_status =
- (curi,extended_metasenv,pbo,pty),goal in
- let (status,newgoals) =
- ProofEngineTypes.apply_tactic
- (PrimitiveTactics.apply_tac ~term:proofterm)
- extended_status in
- (status,maxm::newgoals)
- end
- else (* if newty = ty then *)
- raise (ProofEngineTypes.Fail (lazy "no progress"))
- (*else ProofEngineTypes.apply_tactic
- (ReductionTactics.simpl_tac ~pattern)
- initialstatus*)
+ let rec aux newactives newpassives bag = function
+ | [] -> bag, (newactives, newpassives)
+ | hd::tl ->
+ let selected = hd in
+ let (_,m1,t1) = selected in
+ let already_in =
+ List.exists (fun (_,_,t) -> Equality.meta_convertibility t t1)
+ newactives
+ in
+ if already_in then
+ aux newactives newpassives bag tl
+ else
+ let bag, newpassives =
+ if Utils.metas_of_term t1 = [] then
+ bag, newpassives
+ else
+ let bag, new' =
+ Indexing.superposition_left bag env (snd active) selected
+ in
+ let new' =
+ List.map
+ (fun x -> let b, x = simplify_goal bag env x active in x)
+ new'
+ in
+ bag, newpassives @ new'
+ in
+ aux (selected::newactives) newpassives bag tl
+ in
+ let rec do_n bag ag pg = function
+ | 0 -> None, active, passive, bag
+ | n ->
+ let bag, (ag, pg) = aux [] [] bag (ag @ pg) in
+ match check_if_goals_set_is_solved bag env active passive (ag,pg) with
+ | bag, None -> do_n bag ag pg (n-1)
+ | bag, Some (gproof,newproof,subsumption_id,subsumption_subst,pmenv)->
+ let subst, proof, gl =
+ build_proof bag
+ status gproof newproof subsumption_id subsumption_subst pmenv
+ in
+ let uri,metasenv,subst,meta_proof,term_to_prove,attrs = proof in
+ let proof =
+ uri, other_menv@metasenv, subst, meta_proof, term_to_prove, attrs
+ in
+ Some (subst, proof,gl),active,passive, bag
+ in
+ do_n bag [] goals goal_steps
;;
-let demodulate_tac ~dbd ~pattern =
- ProofEngineTypes.mk_tactic (demodulate_tac ~dbd ~pattern)
+
+let add_to_passive eql passives =
+ add_to_passive passives eql eql
;;
-let get_stats () =
- <:show<Saturation.>> ^ Indexing.get_stats () ^ Inference.get_stats () ^
- Equality.get_stats ();;
projects / helm.git / blobdiff