X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Fng_paramodulation%2Fparamod.ml;h=48811239bf08a30caaca026a3c97929be3e4e590;hb=4693f3b9de6d867921b51f61e9a7dc36c3da1b77;hp=1cdb9eb5cdc75f1890a258ed1aa6f0b6a55a1182;hpb=2bcf927f58bac034b8758173cdbd16cb7475de36;p=helm.git diff --git a/helm/software/components/ng_paramodulation/paramod.ml b/helm/software/components/ng_paramodulation/paramod.ml index 1cdb9eb5c..48811239b 100644 --- a/helm/software/components/ng_paramodulation/paramod.ml +++ b/helm/software/components/ng_paramodulation/paramod.ml @@ -11,12 +11,35 @@ (* $Id: orderings.ml 9869 2009-06-11 22:52:38Z denes $ *) -let debug s = prerr_endline s ;; +let debug s = prerr_endline (Lazy.force s) ;; let debug _ = ();; let monster = 100;; +module type Paramod = + sig + type t + type input + type szsontology = + | Unsatisfiable of (t Terms.bag * int * int list) list + | GaveUp + | Error of string + | Timeout of int * t Terms.bag + type bag = t Terms.bag * int + val mk_passive : bag -> input * input -> bag * t Terms.clause + val mk_goal : bag -> input * input -> bag * t Terms.clause + val paramod : + useage:bool -> + max_steps:int -> + ?timeout:float -> + bag -> + g_passives:t Terms.clause list -> + passives:t Terms.clause list -> szsontology + end + module Paramod (B : Orderings.Blob) = struct + type t = B.t + type input = B.input type szsontology = | Unsatisfiable of (B.t Terms.bag * int * int list) list | GaveUp @@ -104,7 +127,7 @@ module Paramod (B : Orderings.Blob) = struct let mk_clause bag maxvar (t,ty) = let (proof,ty) = B.saturate t ty in - let c, maxvar = Utils.mk_unit_clause maxvar ty proof in + let c, maxvar = Utils.mk_clause maxvar [] [ty] proof in let bag, c = Terms.add_to_bag c bag in (bag, maxvar), c ;; @@ -126,7 +149,7 @@ module Paramod (B : Orderings.Blob) = struct (false,cl,remove_passive_clause passives cl,g_passives) else let g_cl = pick_min_passive ~use_age:use_age g_passives in - let (id1,_,_,_),(id2,_,_,_) = snd cl, snd g_cl in + let (id1,_,_,_,_),(id2,_,_,_,_) = snd cl, snd g_cl in let cmp = if use_age then id1 <= id2 else fst cl <= fst g_cl in @@ -139,11 +162,11 @@ module Paramod (B : Orderings.Blob) = struct let backward_infer_step bag maxvar actives passives g_actives g_passives g_current iterno = (* superposition left, simplifications on goals *) - debug "infer_left step..."; + debug (lazy "infer_left step..."); let bag, maxvar, new_goals = Sup.infer_left bag maxvar g_current actives in - debug "Performed infer_left step"; + debug (lazy "Performed infer_left step"); let bag = Terms.replace_in_bag (g_current,false,iterno) bag in bag, maxvar, actives, passives, g_current::g_actives, (add_passive_goals g_passives new_goals) @@ -161,11 +184,12 @@ module Paramod (B : Orderings.Blob) = struct * new = supright e'' A'' * * new'= demod A'' new * * P' = P + new' *) - debug "Forward infer step..."; + debug (lazy "Forward infer step..."); + debug (lazy("Number of actives : " ^ (string_of_int (List.length (fst actives))))); let bag, maxvar, actives, new_clauses = Sup.infer_right bag maxvar current actives in - debug "Demodulating goals with actives..."; + debug (lazy "Demodulating goals with actives..."); (* keep goals demodulated w.r.t. actives and check if solved *) let bag, g_actives = List.fold_left @@ -177,7 +201,7 @@ module Paramod (B : Orderings.Blob) = struct | Some (bag,c1) -> bag,if c==c1 then c::acc else c::c1::acc) (bag,[]) g_actives in - let ctable = IDX.index_unit_clause IDX.DT.empty current in + let ctable = IDX.index_clause IDX.DT.empty current in let bag, maxvar, new_goals = List.fold_left (fun (bag,m,acc) g -> @@ -191,7 +215,7 @@ module Paramod (B : Orderings.Blob) = struct add_passive_goals g_passives new_goals ;; - let rec given_clause ~noinfer + let rec given_clause ~useage ~noinfer bag maxvar iterno weight_picks max_steps timeout actives passives g_actives g_passives = @@ -205,8 +229,8 @@ module Paramod (B : Orderings.Blob) = struct if noinfer then begin debug - ("Last chance: all is indexed " ^ string_of_float - (Unix.gettimeofday())); + (lazy("Last chance: all is indexed " ^ string_of_float + (Unix.gettimeofday()))); let maxgoals = 100 in ignore(List.fold_left (fun (acc,i) x -> @@ -221,15 +245,15 @@ module Paramod (B : Orderings.Blob) = struct end else if false then (* activates last chance strategy *) begin - debug("Last chance: "^string_of_float (Unix.gettimeofday())); - given_clause ~noinfer:true bag maxvar iterno weight_picks max_steps + debug (lazy("Last chance: "^string_of_float (Unix.gettimeofday()))); + given_clause ~useage ~noinfer:true bag maxvar iterno weight_picks max_steps (Some (Unix.gettimeofday () +. 20.)) actives passives g_actives g_passives; raise (Stop (Timeout (maxvar,bag))); end else raise (Stop (Timeout (maxvar,bag))); - let use_age = weight_picks = (iterno / 6 + 1) in + let use_age = useage && (weight_picks = (iterno / 6 + 1)) in let weight_picks = if use_age then 0 else weight_picks+1 in @@ -246,7 +270,7 @@ module Paramod (B : Orderings.Blob) = struct else let bag = Terms.replace_in_bag (current,false,iterno) bag in if backward then - let _ = debug ("Selected goal : " ^ Pp.pp_unit_clause current) in + let _ = debug (lazy("Selected goal : " ^ Pp.pp_clause current)) in match if noinfer then if weight > monster then None else Some (bag,current) @@ -263,14 +287,14 @@ module Paramod (B : Orderings.Blob) = struct backward_infer_step bag maxvar actives passives g_actives g_passives g_current iterno else - let _ = debug ("Selected fact : " ^ Pp.pp_unit_clause current) in + let _ = debug (lazy("Selected fact : " ^ Pp.pp_clause current)) in (*let is_orphan = Sup.orphan_murder bag (fst actives) current in*) match if noinfer then if weight > monster then bag,None else bag, Some (current,actives) else if Sup.orphan_murder bag (fst actives) current then - let _ = debug "Orphan murdered" in + let _ = debug (lazy "Orphan murdered") in let bag = Terms.replace_in_bag (current,true,iterno) bag in bag, None else Sup.keep_simplified current actives bag maxvar @@ -292,7 +316,7 @@ module Paramod (B : Orderings.Blob) = struct if noinfer then let actives = current::fst actives, - IDX.index_unit_clause (snd actives) current + IDX.index_clause (snd actives) current in bag,maxvar,actives,passives,g_actives,g_passives else @@ -304,27 +328,26 @@ module Paramod (B : Orderings.Blob) = struct (*prerr_endline "Active table :"; (List.iter (fun x -> prerr_endline (Pp.pp_unit_clause x)) (fst actives)); *) - let bag,maxvar,actives,passives,g_actives,g_passives = aux_select bag passives g_passives in debug - (Printf.sprintf "Number of active goals : %d" - (List.length g_actives)); + (lazy(Printf.sprintf "Number of active goals : %d" + (List.length g_actives))); debug - (Printf.sprintf "Number of passive goals : %d" - (passive_set_cardinal g_passives)); + (lazy(Printf.sprintf "Number of passive goals : %d" + (passive_set_cardinal g_passives))); debug - (Printf.sprintf "Number of actives : %d" (List.length (fst actives))); + (lazy(Printf.sprintf "Number of actives : %d" (List.length (fst actives)))); debug - (Printf.sprintf "Number of passives : %d" - (passive_set_cardinal passives)); - given_clause ~noinfer + (lazy(Printf.sprintf "Number of passives : %d" + (passive_set_cardinal passives))); + given_clause ~useage ~noinfer bag maxvar iterno weight_picks max_steps timeout actives passives g_actives g_passives ;; - let paramod ~max_steps ?timeout (bag,maxvar) ~g_passives ~passives = + let paramod ~useage ~max_steps ?timeout (bag,maxvar) ~g_passives ~passives = let initial_timestamp = Unix.gettimeofday () in let passives = add_passive_clauses ~no_weight:true passive_empty_set passives @@ -335,17 +358,17 @@ module Paramod (B : Orderings.Blob) = struct let g_actives = [] in let actives = [], IDX.DT.empty in try - given_clause ~noinfer:false + given_clause ~useage ~noinfer:false bag maxvar 0 0 max_steps timeout actives passives g_actives g_passives with - | Sup.Success (bag, _, (i,_,_,_)) -> + | Sup.Success (bag, _, (i,_,_,_,_)) -> let l = let rec traverse ongoal (accg,acce) i = match Terms.get_from_bag i bag with - | (id,_,_,Terms.Exact _),_,_ -> + | (id,_,_,_,Terms.Exact _),_,_ -> if ongoal then [i],acce else if (List.mem i acce) then accg,acce else accg,acce@[i] - | (_,_,_,Terms.Step (_,i1,i2,_,_,_)),_,_ -> + | (_,_,_,_,Terms.Step (_,i1,i2,_,_,_)),_,_ -> if (not ongoal) && (List.mem i acce) then accg,acce else let accg,acce = @@ -358,7 +381,7 @@ module Paramod (B : Orderings.Blob) = struct in let max_w = List.fold_left (fun acc i -> let (cl,_,_) = Terms.get_from_bag i bag in - max acc (Order.compute_unit_clause_weight cl)) 0 l in + max acc (Order.compute_clause_weight cl)) 0 l in prerr_endline "Statistics :"; prerr_endline ("Max weight : " ^ (string_of_int max_w)); (* List.iter (fun id -> let ((_,lit,_,proof as cl),d,it) =