; ps: i_n_var list (* the n-th inert must become n *)
; sigma: (int * nf) list (* the computed substitution *)
; deltas: (int * nf) list ref list (* collection of all branches *)
- }
-
-
-(* let heads = Util.sort_uniq (List.map hd_of_i_var p.ps) in
-for all head
- List.map (fun (_, bs) -> List.map (fun (x,_) -> List.nth p.ps x) !bs) p.deltas *)
-
-(* let ($) f x = f x;; *)
-
-(* let subterms tms freshno =
- let apply_var =
- let no = ref freshno in
- function t -> incr no; mk_app t (`Var !no) in
- let applicative hd args = snd (
- List.fold_left (fun (hd, acc) t -> let hd = mk_app hd t in hd, hd::acc) (hd, []) args) in
- let rec aux t = match t with
- | `Var _ -> []
- | `I(v,ts) ->
- (* applicative (`Var v) (Listx.to_list ts) @ *)
- Util.concat_map aux (Listx.to_list ts) @ List.map apply_var (Listx.to_list ts)
- | `Lam(_,_,t) -> aux (lift ~-1 t)
- | `Match(u,_,bs_lift,bs,args) ->
- aux (u :> nf) @
- (* applicative (`Match(u,bs_lift,bs,[])) args @ *)
- Util.concat_map aux args @ List.map apply_var args
- (* @ Util.concat_map (aux ++ (lift bs_lift) ++ snd) !bs *)
- | `N _ -> []
- in let tms' = (* Util.sort_uniq ~compare:eta_compare*) (Util.concat_map aux tms) in
- tms @ tms'
- (* List.map (fun (t, v) -> match t with `N _ -> t | _ -> mk_app t v) (List.combine tms (List.mapi (fun i _ -> `Var(freshno+i)) tms)) *)
-;; *)
+ ; initialSpecialK: int
+};;
let all_terms p =
-(match p.div with None -> [] | Some t -> [(t :> i_n_var)])
-@ p.conv
-@ p.ps
+ (match p.div with None -> [] | Some t -> [(t :> i_n_var)])
+ @ p.conv
+ @ p.ps
;;
let problem_measure p = 0 ;;
let make_fresh_vars p arities =
List.fold_right
- (* fold_left vs. fold_right hides/shows the bug in problem q7 *)
(fun arity (p, vars) -> let p, var = make_fresh_var p arity in p, var::vars)
arities
(p, [])
;;
let simple_expand_match ps =
- let rec aux level = function
+ let rec aux level = function
| #i_num_var as t -> aux_i_num_var level t
| `Lam(b,t) -> `Lam(b,aux (level+1) t)
- and aux_i_num_var level = function
+ and aux_i_num_var level = function
| `Match(u,v,bs_lift,bs,args) as torig ->
let u = aux_i_num_var level u in
bs := List.map (fun (n, x) -> n, aux 0 x) !bs;
`Match(cast_to_i_num_var u,v,bs_lift,bs,List.map (aux level) args))
| `I(v,args) -> `I(v,Listx.map (aux level) args)
| `N _ | `Var _ as t -> t
-in aux_i_num_var 0;;
+ in aux_i_num_var 0
+;;
let fixpoint f =
let rec aux x = let x' = f x in if x <> x' then aux x' else x in aux
| [] -> acc
| t::todo_ps ->
(*prerr_endline ("EXPAND t:" ^ print (t :> nf));*)
- let t = subst false x inst (t :> nf) in
+ let t = subst false false x inst (t :> nf) in
(*prerr_endline ("SUBSTITUTED t:" ^ print (t :> nf));*)
let freshno,new_t,acc_new_ps =
expand_match (freshno,acc_ps@`Var(max_int/3,-666)::todo_ps,acc_new_ps) t
| t::todo_conv ->
(*prerr_endline ("EXPAND t:" ^ print (t :> nf));*)
(* try *)
- let t = subst false x inst (t :> nf) in
+ let t = subst false false x inst (t :> nf) in
(*prerr_endline ("SUBSTITUTED t:" ^ print (t :> nf));*)
let freshno,new_t,acc_new_ps =
expand_match (freshno,ps,acc_new_ps) t
function
| None -> freshno, None, acc_new_ps
| Some t ->
- let t = subst false x inst (t :> nf) in
+ let t = subst false false x inst (t :> nf) in
let freshno,new_t,acc_new_ps =
expand_match (freshno,ps,acc_new_ps) t
in
match u with
| `N i -> acc_new_ps,i
| _ ->
- let ps = List.map (fun t -> cast_to_i_num_var (subst false x inst (t:> nf))) (acc_ps@acc_new_ps) in
+ let ps = List.map (fun t -> cast_to_i_num_var (subst false false x inst (t:> nf))) (acc_ps@acc_new_ps) in
let super_simplified_ps = super_simplify_ps ps ps in
(*prerr_endline ("CERCO u:" ^ print (fst u :> nf));
List.iter (fun x -> prerr_endline ("IN: " ^ print (fst x :> nf))) ps;
(if hd_of_i_var (cast_to_i_var !bomb) = x
then failwithProblem p ("BOMB (" ^ string_of_nf !bomb ^ ") cannot be instantiated!"));
let arity_of_x = max_arity_tms x (all_terms p) in
- (if arity_of_x < 0 then failwithProblem p "step on a var of negative arity");
- (* AC: FIXME compute arities correctly below! *)
- let arities = Num.compute_arities x (n+1) (all_terms p :> nf list) in
+ (if arity_of_x = None then failwithProblem p "step on var non occurring in problem");
+ (if Util.option_get(arity_of_x) = min_int then failwithProblem p "step on fake variable");
+ (if Util.option_get(arity_of_x) <= 0 then failwithProblem p "step on var of non-positive arity");
+ let n = (prerr_endline "WARNING: using constant initialSpecialK"); p.initialSpecialK in
+ (* AC: Once upon a time, it was:
+ let arities = Num.compute_arities x (n+1) (all_terms p :> nf list) in *)
(* let arities = Array.to_list (Array.make (n+1) 0) in *)
+ let arities = Array.to_list (Array.make (n+1) min_int) in
let p,vars = make_fresh_vars p arities in
- (* let p,zero = make_fresh_var p in *)
- (* let zero = Listx.Nil zero in *)
- (* let args = if n = 0 then zero else Listx.append zero (Listx.from_list vars) in *)
let args = Listx.from_list (vars :> nf list) in
let bs = ref [] in
- let inst = `Lam(false,`Match(`I((0,0),Listx.map (lift 1) args),(x,arity_of_x),1,bs,[])) in
+ (* 666, since it will be replaced anyway during subst: *)
+ let inst = `Lam(false,`Match(`I((0,n+2),Listx.map (lift 1) args),(x,666),1,bs,[])) in
let p = {p with deltas=bs::p.deltas} in
subst_in_problem x inst p
;;
| x::_, _ ->
prerr_endline ("INSTANTIATING " ^ string_of_var x);
x in
-(* Strategy that decreases the special_k to 0 first (round robin)
+(* Strategy that decreases the special_k to 0 first (round robin)
1:11m42 2:14m5 3:11m16s 4:14m46s 5:12m7s 6:6m31s *)
let x =
try
if match div with None -> false | Some div -> List.exists (eta_subterm div) (tms@conv)
then (
prerr_endline "--- TEST SKIPPED ---";
- {freshno=0; div=None; conv=[]; ps=[]; sigma=[]; deltas=[]}, 0, []
+ {freshno=0; div=None; conv=[]; ps=[]; sigma=[]; deltas=[]; initialSpecialK=0}, 0, []
) else
let tms = sort_uniq ~compare:eta_compare tms in
let special_k = compute_special_k (Listx.from_list all_tms) in (* compute initial special K *)
let dummy = `Var (max_int / 2, -666) in
[ ref (Array.to_list (Array.init (List.length ps) (fun i -> i, dummy))) ] in
- {freshno; div; conv; ps; sigma=[] ; deltas}, special_k, cmds
+ {freshno; div; conv; ps; sigma=[] ; deltas; initialSpecialK=special_k}, special_k, cmds
;;
let magic strings cmds = magic_conv None [] strings cmds;;
projects / fireball-separation.git / blobdiff