open Printf
let print ?(depth=0) s =
- prerr_endline (String.make depth '\t'^Lazy.force s)
+ prerr_endline (String.make (2*depth) ' '^Lazy.force s)
let noprint ?(depth=0) _ = ()
let debug_print = noprint
else true
with Not_found -> true
-let print_stat tbl =
+let print_stat status tbl =
let l = RefHash.fold (fun a v l -> (a,v)::l) tbl [] in
let relevance v = float !(v.uses) /. float !(v.nominations) in
let vcompare (_,v1) (_,v2) =
Pervasives.compare (relevance v1) (relevance v2) in
let l = List.sort vcompare l in
let vstring (a,v)=
- NotationPp.pp_term (Ast.NCic (NCic.Const a)) ^ ": rel = " ^
+ NotationPp.pp_term status (Ast.NCic (NCic.Const a)) ^ ": rel = " ^
(string_of_float (relevance v)) ^
"; uses = " ^ (string_of_int !(v.uses)) ^
"; nom = " ^ (string_of_int !(v.nominations)) in
let _,_,metasenv,subst,_ = status#obj in
try
let _, ctx, ty = NCicUtils.lookup_meta g metasenv in
- let ty = NCicUntrusted.apply_subst subst ctx ty in
- let ctx = NCicUntrusted.apply_subst_context
+ let ty = NCicUntrusted.apply_subst status subst ctx ty in
+ let ctx = NCicUntrusted.apply_subst_context status
~fix_projections:true subst ctx
in
NTacStatus.mk_cic_term ctx ty
let is_a_fact status ty = branch status ty = 0
let is_a_fact_obj s uri =
- let obj = NCicEnvironment.get_checked_obj uri in
+ let obj = NCicEnvironment.get_checked_obj s uri in
match obj with
| (_,_,[],[],NCic.Constant(_,_,_,ty,_)) ->
is_a_fact s (mk_cic_term [] ty)
let is_a_fact_ast status subst metasenv ctx cand =
debug_print ~depth:0
- (lazy ("------- checking " ^ NotationPp.pp_term cand));
+ (lazy ("------- checking " ^ NotationPp.pp_term status cand));
let status, t = disambiguate status ctx ("",0,cand) None in
let status,t = term_of_cic_term status t ctx in
- let ty = NCicTypeChecker.typeof subst metasenv ctx t in
+ let ty = NCicTypeChecker.typeof status subst metasenv ctx t in
is_a_fact status (mk_cic_term ctx ty)
let current_goal status =
let ctx = ctx_of gty in
open_goal, ctx, gty
-let height_of_ref (NReference.Ref (uri, x)) =
+let height_of_ref status (NReference.Ref (uri, x)) =
match x with
| NReference.Decl
| NReference.Ind _
| NReference.Con _
| NReference.CoFix _ ->
- let _,height,_,_,_ = NCicEnvironment.get_checked_obj uri in
+ let _,height,_,_,_ = NCicEnvironment.get_checked_obj status uri in
height
| NReference.Def h -> h
| NReference.Fix (_,_,h) -> h
;;
(*************************** height functions ********************************)
-let fast_height_of_term t =
+let fast_height_of_term status t =
let h = ref 0 in
let rec aux =
function
| NCic.Implicit _ -> assert false
| NCic.Const nref ->
(*
- prerr_endline (NCicPp.ppterm ~metasenv:[] ~subst:[]
- ~context:[] t ^ ":" ^ string_of_int (height_of_ref nref));
+ prerr_endline (status#ppterm ~metasenv:[] ~subst:[]
+ ~context:[] t ^ ":" ^ string_of_int (height_of_ref status nref));
*)
- h := max !h (height_of_ref nref)
+ h := max !h (height_of_ref status nref)
| NCic.Prod (_,t1,t2)
| NCic.Lambda (_,t1,t2) -> aux t1; aux t2
| NCic.LetIn (_,s,ty,t) -> aux s; aux ty; aux t
let ty = get_goalty status g in
let context = ctx_of ty in
let _, ty = term_of_cic_term status ty (ctx_of ty) in
- let h = ref (fast_height_of_term ty) in
+ let h = ref (fast_height_of_term status ty) in
List.iter
(function
- | _, NCic.Decl ty -> h := max !h (fast_height_of_term ty)
+ | _, NCic.Decl ty -> h := max !h (fast_height_of_term status ty)
| _, NCic.Def (bo,ty) ->
- h := max !h (fast_height_of_term ty);
- h := max !h (fast_height_of_term bo);
+ h := max !h (fast_height_of_term status ty);
+ h := max !h (fast_height_of_term status bo);
)
context;
!h
(fun open_goal ->
h := max !h (height_of_goal open_goal status))
open_goals;
- debug_print (lazy ("altezza sequente: " ^ string_of_int !h));
+ noprint (lazy ("altezza sequente: " ^ string_of_int !h));
!h
;;
*)
let n,h,metasenv,subst,o = status#obj in
let gname, ctx, gty = List.assoc goal metasenv in
- let gty = NCicUntrusted.apply_subst subst ctx gty in
+ let gty = NCicUntrusted.apply_subst status subst ctx gty in
let build_status (pt, _, metasenv, subst) =
try
- debug_print (lazy ("refining: "^(NCicPp.ppterm ctx subst metasenv pt)));
+ noprint (lazy ("refining: "^(status#ppterm ctx subst metasenv pt)));
let stamp = Unix.gettimeofday () in
let metasenv, subst, pt, pty =
(* NCicRefiner.typeof status
(* (status#set_coerc_db NCicCoercion.empty_db) *)
metasenv subst ctx pt None in
- print (lazy ("refined: "^(NCicPp.ppterm ctx subst metasenv pt)));
- debug_print (lazy ("synt: "^(NCicPp.ppterm ctx subst metasenv pty)));
+ debug_print (lazy ("refined: "^(status#ppterm ctx subst metasenv pt)));
+ noprint (lazy ("synt: "^(status#ppterm ctx subst metasenv pty)));
let metasenv, subst =
NCicUnification.unify status metasenv subst ctx gty pty *)
NCicRefiner.typeof
(status#set_coerc_db NCicCoercion.empty_db)
metasenv subst ctx pt (Some gty)
in
- debug_print (lazy (Printf.sprintf "Refined in %fs"
+ noprint (lazy (Printf.sprintf "Refined in %fs"
(Unix.gettimeofday() -. stamp)));
let status = status#set_obj (n,h,metasenv,subst,o) in
let metasenv = List.filter (fun j,_ -> j <> goal) metasenv in
debug_print (lazy ("WARNING: refining in fast_eq_check failed\n" ^
snd (Lazy.force msg) ^
"\n in the environment\n" ^
- NCicPp.ppmetasenv subst metasenv)); None
+ status#ppmetasenv subst metasenv)); None
| NCicRefiner.AssertFailure msg ->
debug_print (lazy ("WARNING: refining in fast_eq_check failed" ^
Lazy.force msg ^
"\n in the environment\n" ^
- NCicPp.ppmetasenv subst metasenv)); None
+ status#ppmetasenv subst metasenv)); None
| _ -> None
in
HExtlib.filter_map build_status
;;
let index_local_equations eq_cache status =
- debug_print (lazy "indexing equations");
+ noprint (lazy "indexing equations");
let open_goals = head_goals status#stack in
let open_goal = List.hd open_goals in
let ngty = get_goalty status open_goal in
c:= !c+1;
let t = NCic.Rel !c in
try
- let ty = NCicTypeChecker.typeof [] [] ctx t in
+ let ty = NCicTypeChecker.typeof status [] [] ctx t in
if is_a_fact status (mk_cic_term ctx ty) then
- (debug_print(lazy("eq indexing " ^ (NCicPp.ppterm ctx [] [] ty)));
+ (noprint(lazy("eq indexing " ^ (status#ppterm ctx [] [] ty)));
NCicParamod.forward_infer_step eq_cache t ty)
else
- (debug_print (lazy ("not a fact: " ^ (NCicPp.ppterm ctx [] [] ty)));
+ (noprint (lazy ("not a fact: " ^ (status#ppterm ctx [] [] ty)));
eq_cache)
with
| NCicTypeChecker.TypeCheckerFailure _
(*************** subsumption ****************)
-let close_wrt_context =
+let close_wrt_context status =
List.fold_left
(fun ty ctx_entry ->
match ctx_entry with
| name, NCic.Decl t -> NCic.Prod(name,t,ty)
- | name, NCic.Def(bo, _) -> NCicSubstitution.subst bo ty)
+ | name, NCic.Def(bo, _) -> NCicSubstitution.subst status bo ty)
;;
let args_for_context ?(k=1) ctx =
(k,[]) ctx in
args
-let constant_for_meta ctx ty i =
+let constant_for_meta status ctx ty i =
let name = "cic:/foo"^(string_of_int i)^".con" in
let uri = NUri.uri_of_string name in
- let ty = close_wrt_context ty ctx in
- (* prerr_endline (NCicPp.ppterm [] [] [] ty); *)
+ let ty = close_wrt_context status ty ctx in
+ (* prerr_endline (status#ppterm [] [] [] ty); *)
let attr = (`Generated,`Definition,`Local) in
let obj = NCic.Constant([],name,None,ty,attr) in
(* Constant of relevance * string * term option * term * c_attr *)
(* close metasenv returns a ground instance of all the metas in the
metasenv, insantiatied with axioms, and the list of these axioms *)
-let close_metasenv metasenv subst =
+let close_metasenv status metasenv subst =
(*
let metasenv = NCicUntrusted.apply_subst_metasenv subst metasenv in
*)
- let metasenv = NCicUntrusted.sort_metasenv subst metasenv in
+ let metasenv = NCicUntrusted.sort_metasenv status subst metasenv in
List.fold_left
(fun (subst,objs) (i,(iattr,ctx,ty)) ->
- let ty = NCicUntrusted.apply_subst subst ctx ty in
+ let ty = NCicUntrusted.apply_subst status subst ctx ty in
let ctx =
- NCicUntrusted.apply_subst_context ~fix_projections:true
+ NCicUntrusted.apply_subst_context status ~fix_projections:true
subst ctx in
let (uri,_,_,_,obj) as okind =
- constant_for_meta ctx ty i in
+ constant_for_meta status ctx ty i in
try
- NCicEnvironment.check_and_add_obj okind;
+ NCicEnvironment.check_and_add_obj status okind;
let iref = NReference.reference_of_spec uri NReference.Decl in
let iterm =
let args = args_for_context ctx in
if args = [] then NCic.Const iref
else NCic.Appl(NCic.Const iref::args)
in
- (* prerr_endline (NCicPp.ppterm ctx [] [] iterm); *)
+ (* prerr_endline (status#ppterm ctx [] [] iterm); *)
let s_entry = i, ([], ctx, iterm, ty)
in s_entry::subst,okind::objs
with _ -> assert false)
(*
let submenv = metasenv in
*)
- let subst, objs = close_metasenv submenv subst in
+ let subst, objs = close_metasenv status submenv subst in
try
List.iter
(fun i ->
let (_, ctx, t, _) = List.assoc i subst in
- debug_print (lazy (NCicPp.ppterm ctx [] [] t));
+ noprint (lazy (status#ppterm ctx [] [] t));
List.iter
(fun (uri,_,_,_,_) as obj ->
NCicEnvironment.invalidate_item (`Obj (uri, obj)))
(* (ctx,t) *)
;;
-let replace_meta i args target =
+let replace_meta status i args target =
let rec aux k = function
(* TODO: local context *)
| NCic.Meta (j,lc) when i = j ->
(match args with
| [] -> NCic.Rel 1
| _ -> let args =
- List.map (NCicSubstitution.subst_meta lc) args in
+ List.map (NCicSubstitution.subst_meta status lc) args in
NCic.Appl(NCic.Rel k::args))
| NCic.Meta (j,lc) as m ->
(match lc with
NCic.Meta
(i,(0,NCic.Ctx
(List.map (fun t ->
- aux k (NCicSubstitution.lift n t)) l))))
- | t -> NCicUtils.map (fun _ k -> k+1) k aux t
+ aux k (NCicSubstitution.lift status n t)) l))))
+ | t -> NCicUtils.map status (fun _ k -> k+1) k aux t
in
aux 1 target
;;
-let close_wrt_metasenv subst =
+let close_wrt_metasenv status subst =
List.fold_left
(fun ty (i,(iattr,ctx,mty)) ->
- let mty = NCicUntrusted.apply_subst subst ctx mty in
+ let mty = NCicUntrusted.apply_subst status subst ctx mty in
let ctx =
- NCicUntrusted.apply_subst_context ~fix_projections:true
+ NCicUntrusted.apply_subst_context status ~fix_projections:true
subst ctx in
- let cty = close_wrt_context mty ctx in
+ let cty = close_wrt_context status mty ctx in
let name = "foo"^(string_of_int i) in
- let ty = NCicSubstitution.lift 1 ty in
+ let ty = NCicSubstitution.lift status 1 ty in
let args = args_for_context ~k:1 ctx in
- (* prerr_endline (NCicPp.ppterm ctx [] [] iterm); *)
- let ty = replace_meta i args ty
+ (* prerr_endline (status#ppterm ctx [] [] iterm); *)
+ let ty = replace_meta status i args ty
in
NCic.Prod(name,cty,ty))
;;
let subset = IntSet.remove g subset in
let elems = IntSet.elements subset in
let _, ctx, ty = NCicUtils.lookup_meta g metasenv in
- let ty = NCicUntrusted.apply_subst subst ctx ty in
- debug_print (lazy ("metas in " ^ (NCicPp.ppterm ctx [] metasenv ty)));
- debug_print (lazy (String.concat ", " (List.map string_of_int elems)));
+ let ty = NCicUntrusted.apply_subst status subst ctx ty in
+ noprint (lazy ("metas in " ^ (status#ppterm ctx [] metasenv ty)));
+ noprint (lazy (String.concat ", " (List.map string_of_int elems)));
let submenv = List.filter (fun (x,_) -> IntSet.mem x subset) metasenv in
- let submenv = List.rev (NCicUntrusted.sort_metasenv subst submenv) in
+ let submenv = List.rev (NCicUntrusted.sort_metasenv status subst submenv) in
(*
let submenv = metasenv in
*)
- let ty = close_wrt_metasenv subst ty submenv in
- debug_print (lazy (NCicPp.ppterm ctx [] [] ty));
+ let ty = close_wrt_metasenv status subst ty submenv in
+ noprint (lazy (status#ppterm ctx [] [] ty));
ctx,ty
;;
(****************** smart application ********************)
-let saturate_to_ref metasenv subst ctx nref ty =
- let height = height_of_ref nref in
+let saturate_to_ref status metasenv subst ctx nref ty =
+ let height = height_of_ref status nref in
let rec aux metasenv ty args =
let ty,metasenv,moreargs =
- NCicMetaSubst.saturate ~delta:height metasenv subst ctx ty 0 in
+ NCicMetaSubst.saturate status ~delta:height metasenv subst ctx ty 0 in
match ty with
| NCic.Const(NReference.Ref (_,NReference.Def _) as nre)
when nre<>nref ->
- let _, _, bo, _, _, _ = NCicEnvironment.get_checked_def nre in
+ let _, _, bo, _, _, _ = NCicEnvironment.get_checked_def status nre in
aux metasenv bo (args@moreargs)
| NCic.Appl(NCic.Const(NReference.Ref (_,NReference.Def _) as nre)::tl)
when nre<>nref ->
- let _, _, bo, _, _, _ = NCicEnvironment.get_checked_def nre in
+ let _, _, bo, _, _, _ = NCicEnvironment.get_checked_def status nre in
aux metasenv (NCic.Appl(bo::tl)) (args@moreargs)
| _ -> ty,metasenv,(args@moreargs)
in
let status, t = disambiguate status ctx t None in
let status,t = term_of_cic_term status t ctx in
let _,_,metasenv,subst,_ = status#obj in
- let ty = NCicTypeChecker.typeof subst metasenv ctx t in
+ let ty = NCicTypeChecker.typeof status subst metasenv ctx t in
let ty,metasenv,args =
match gty with
| NCic.Const(nref)
| NCic.Appl(NCic.Const(nref)::_) ->
- saturate_to_ref metasenv subst ctx nref ty
+ saturate_to_ref status metasenv subst ctx nref ty
| _ ->
- NCicMetaSubst.saturate metasenv subst ctx ty 0 in
+ NCicMetaSubst.saturate status metasenv subst ctx ty 0 in
let metasenv,j,inst,_ = NCicMetaSubst.mk_meta metasenv ctx `IsTerm in
let status = status#set_obj (n,h,metasenv,subst,o) in
let pterm = if args=[] then t else
| NCic.Appl l -> NCic.Appl(l@args)
| _ -> NCic.Appl(t::args)
in
- noprint(lazy("pterm " ^ (NCicPp.ppterm ctx [] [] pterm)));
- noprint(lazy("pty " ^ (NCicPp.ppterm ctx [] [] ty)));
+ noprint(lazy("pterm " ^ (status#ppterm ctx [] [] pterm)));
+ noprint(lazy("pty " ^ (status#ppterm ctx [] [] ty)));
let eq_coerc =
let uri =
- NUri.uri_of_string "cic:/matita/ng/Plogic/equality/eq_coerc.con" in
+ NUri.uri_of_string "cic:/matita/basics/logic/eq_coerc.con" in
let ref = NReference.reference_of_spec uri (NReference.Def(2)) in
NCic.Const ref
in
let status = instantiate status g smart in
let _,_,metasenv,subst,_ = status#obj in
let _,ctx,jty = List.assoc j metasenv in
- let jty = NCicUntrusted.apply_subst subst ctx jty in
- debug_print(lazy("goal " ^ (NCicPp.ppterm ctx [] [] jty)));
+ let jty = NCicUntrusted.apply_subst status subst ctx jty in
+ noprint(lazy("goal " ^ (status#ppterm ctx [] [] jty)));
fast_eq_check unit_eq status j
with
| NCicEnvironment.ObjectNotFound s as e ->
;;
(* all_keys_of_cic_type: term -> term set *)
-let all_keys_of_cic_type metasenv subst context ty =
+let all_keys_of_cic_type status metasenv subst context ty =
let saturate ty =
(* Here we are dropping the metasenv, but this should not raise any
exception (hopefully...) *)
let ty,_,hyps =
- NCicMetaSubst.saturate ~delta:max_int metasenv subst context ty 0
+ NCicMetaSubst.saturate status ~delta:max_int metasenv subst context ty 0
in
ty,List.length hyps
in
NCic.Appl (he::tl) ->
let tl' =
List.map (fun ty ->
- let wty = NCicReduction.whd ~delta:0 ~subst context ty in
+ let wty = NCicReduction.whd status ~delta:0 ~subst context ty in
if ty = wty then
NDiscriminationTree.TermSet.add ty (aux ty)
else
| _ -> NDiscriminationTree.TermSet.empty
in
let ty,ity = saturate ty in
- let wty,iwty = saturate (NCicReduction.whd ~delta:0 ~subst context ty) in
+ let wty,iwty = saturate (NCicReduction.whd status ~delta:0 ~subst context ty) in
if ty = wty then
[ity, NDiscriminationTree.TermSet.add ty (aux ty)]
else
let context = ctx_of t in
let status, t = apply_subst status context t in
let keys =
- all_keys_of_cic_type metasenv subst context
+ all_keys_of_cic_type status metasenv subst context
(snd (term_of_cic_term status t context))
in
status,
(fun (status, acc) g ->
let gty = get_goalty status g in
let ctx = ctx_of gty in
- debug_print(lazy("th cache for: "^ppterm status gty));
- debug_print(lazy("th cache in: "^ppcontext status ctx));
+ noprint(lazy("th cache for: "^ppterm status gty));
+ noprint(lazy("th cache in: "^ppcontext status ctx));
if List.mem_assq ctx acc then status, acc else
let idx = InvRelDiscriminationTree.empty in
let status,_,idx =
(fun (status, i, idx) _ ->
let t = mk_cic_term ctx (NCic.Rel i) in
let status, keys = keys_of_term status t in
- debug_print(lazy("indexing: "^ppterm status t ^ ": " ^ string_of_int (List.length keys)));
+ noprint(lazy("indexing: "^ppterm status t ^ ": " ^ string_of_int (List.length keys)));
let idx =
List.fold_left (fun idx k ->
InvRelDiscriminationTree.index idx k t) idx keys
(status,[]) gl
;;
+let all_elements ctx cache =
+ let dummy = mk_cic_term ctx (NCic.Meta (0,(0, (NCic.Irl 0)))) in
+ try
+ let idx = List.assq ctx cache in
+ Ncic_termSet.elements
+ (InvRelDiscriminationTree.retrieve_unifiables idx dummy)
+ with Not_found -> []
+
let add_to_th t c ty =
let key_c = ctx_of t in
if not (List.mem_assq key_c c) then
let pp_idx status idx =
InvRelDiscriminationTree.iter idx
(fun k set ->
- debug_print(lazy("K: " ^ NCicInverseRelIndexable.string_of_path k));
+ noprint(lazy("K: " ^ NCicInverseRelIndexable.string_of_path k));
Ncic_termSet.iter
(fun t -> debug_print(lazy("\t"^ppterm status t)))
set)
;;
-let pp_th status =
+let pp_th (status: #NTacStatus.pstatus) =
List.iter
(fun ctx, idx ->
- debug_print(lazy( "-----------------------------------------------"));
- debug_print(lazy( (NCicPp.ppcontext ~metasenv:[] ~subst:[] ctx)));
- debug_print(lazy( "||====> "));
+ noprint(lazy( "-----------------------------------------------"));
+ noprint(lazy( (status#ppcontext ~metasenv:[] ~subst:[] ctx)));
+ noprint(lazy( "||====> "));
pp_idx status idx)
;;
type cache =
{facts : th_cache; (* positive results *)
under_inspection : cic_term list * th_cache; (* to prune looping *)
+ failures : th_cache; (* to avoid repetitions *)
unit_eq : NCicParamod.state;
trace: Ast.term list
}
-let add_to_trace ~depth cache t =
+let add_to_trace status ~depth cache t =
match t with
| Ast.NRef _ ->
- debug_print ~depth (lazy ("Adding to trace: " ^ NotationPp.pp_term t));
+ debug_print ~depth (lazy ("Adding to trace: " ^ NotationPp.pp_term status t));
{cache with trace = t::cache.trace}
| Ast.NCic _ (* local candidate *)
| _ -> (*not an application *) cache
-let pptrace tr =
+let pptrace status tr =
(lazy ("Proof Trace: " ^ (String.concat ";"
- (List.map NotationPp.pp_term tr))))
+ (List.map (NotationPp.pp_term status) tr))))
(* not used
let remove_from_trace cache t =
match t with
type fail = goal * cic_term
type candidate = int * Ast.term (* unique candidate number, candidate *)
-exception Gaveup of IntSet.t (* a sublist of unprovable conjunctive
- atoms of the input goals *)
+exception Gaveup of th_cache (* failure cache *)
exception Proved of NTacStatus.tac_status * Ast.term list
(* let close_failures _ c = c;; *)
(* let add_to_cache_and_del_from_orlist_if_green_cut _ _ c _ _ o f _ = c, o, f, false ;; *)
(* let cache_add_underinspection c _ _ = c;; *)
-let init_cache ?(facts=[]) ?(under_inspection=[],[])
+let init_cache ?(facts=[]) ?(under_inspection=[],[])
+ ?(failures=[])
?(unit_eq=NCicParamod.empty_state)
?(trace=[])
_ =
{facts = facts;
+ failures = failures;
under_inspection = under_inspection;
unit_eq = unit_eq;
trace = trace}
let candidate_ty =
NCicTypeChecker.typeof ~subst:[] ~metasenv:[] [] candidate
in
- let height = fast_height_of_term candidate_ty in
+ let height = fast_height_of_term status candidate_ty in
let rc = signature >= height in
if rc = false then
- debug_print (lazy ("Filtro: " ^ NCicPp.ppterm ~context:[] ~subst:[]
+ noprint (lazy ("Filtro: " ^ status#ppterm ~context:[] ~subst:[]
~metasenv:[] candidate ^ ": " ^ string_of_int height))
else
- debug_print (lazy ("Tengo: " ^ NCicPp.ppterm ~context:[] ~subst:[]
+ noprint (lazy ("Tengo: " ^ status#ppterm ~context:[] ~subst:[]
~metasenv:[] candidate ^ ": " ^ string_of_int height));
rc *)
let branch cand =
let status,ct = disambiguate status ctx ("",0,cand) None in
let status,t = term_of_cic_term status ct ctx in
- let ty = NCicTypeChecker.typeof subst metasenv ctx t in
+ let ty = NCicTypeChecker.typeof status subst metasenv ctx t in
let res = branch status (mk_cic_term ctx ty) in
- debug_print (lazy ("branch factor for: " ^ (ppterm status ct) ^ " = "
+ noprint (lazy ("branch factor for: " ^ (ppterm status ct) ^ " = "
^ (string_of_int res)));
res
in
let candidates =
List.sort (fun (a,_) (b,_) -> a - b) candidates in
let candidates = List.map snd candidates in
- debug_print (lazy ("candidates =\n" ^ (String.concat "\n"
- (List.map NotationPp.pp_term candidates))));
+ noprint (lazy ("candidates =\n" ^ (String.concat "\n"
+ (List.map (NotationPp.pp_term status) candidates))));
candidates
let sort_new_elems l =
let try_candidate ?(smart=0) flags depth status eq_cache ctx t =
try
- debug_print ~depth (lazy ("try " ^ NotationPp.pp_term t));
+ debug_print ~depth (lazy ("try " ^ (NotationPp.pp_term status) t));
let status =
if smart= 0 then NTactics.apply_tac ("",0,t) status
else if smart = 1 then smart_apply_auto ("",0,t) eq_cache status
let ty = NCicTypeChecker.typeof subst metasenv ctx ct in
let res = branch status (mk_cic_term ctx ty) in
if smart=1 && og_no > res then
- (print (lazy ("branch factor for: " ^ (ppterm status cict) ^ " = "
+ (debug_print (lazy ("branch factor for: " ^ (ppterm status cict) ^ " = "
^ (string_of_int res) ^ " vs. " ^ (string_of_int og_no)));
- print ~depth (lazy "strange application"); None)
+ debug_print ~depth (lazy "strange application"); None)
else *)
(incr candidate_no;
Some ((!candidate_no,t),status))
with Error (msg,exn) -> debug_print ~depth (lazy "failed"); None
;;
-let sort_of subst metasenv ctx t =
- let ty = NCicTypeChecker.typeof subst metasenv ctx t in
- let metasenv',ty = NCicUnification.fix_sorts metasenv subst ty in
+let sort_of status subst metasenv ctx t =
+ let ty = NCicTypeChecker.typeof status subst metasenv ctx t in
+ let metasenv',ty = NCicUnification.fix_sorts status metasenv subst ty in
assert (metasenv = metasenv');
- NCicTypeChecker.typeof subst metasenv ctx ty
+ NCicTypeChecker.typeof status subst metasenv ctx ty
;;
let type0= NUri.uri_of_string ("cic:/matita/pts/Type0.univ")
;;
-let perforate_small subst metasenv context t =
+let perforate_small status subst metasenv context t =
let rec aux = function
| NCic.Appl (hd::tl) ->
let map t =
- let s = sort_of subst metasenv context t in
+ let s = sort_of status subst metasenv context t in
match s with
| NCic.Sort(NCic.Type [`Type,u])
when u=type0 -> NCic.Meta (0,(0,NCic.Irl 0))
let _,_,metasenv,subst,_ = status#obj in
let context = ctx_of gty in
let _, raw_gty = term_of_cic_term status gty context in
+ debug_print ~depth (lazy ("gty:" ^ NTacStatus.ppterm status gty));
let raw_weak_gty, weak_gty =
if smart then
match raw_gty with
| NCic.Appl _
| NCic.Const _
| NCic.Rel _ ->
- let weak = perforate_small subst metasenv context raw_gty in
- Some weak, Some (mk_cic_term context weak)
+ let raw_weak =
+ perforate_small status subst metasenv context raw_gty in
+ let weak = mk_cic_term context raw_weak in
+ debug_print ~depth (lazy ("weak_gty:" ^ NTacStatus.ppterm status weak));
+ Some raw_weak, Some (weak)
| _ -> None,None
else None,None
in
let mapf s =
let to_ast = function
| NCic.Const r when true (*is_relevant statistics r*) -> Some (Ast.NRef r)
- | NCic.Const _ -> None
+ (* | NCic.Const _ -> None *)
| _ -> assert false in
HExtlib.filter_map
to_ast (NDiscriminationTree.TermSet.elements s) in
| NCic.Appl _
| NCic.Const _
| NCic.Rel _ ->
- let weak_gty = perforate_small subst metasenv context raw_gty in
+ let weak_gty = perforate_small status subst metasenv context raw_gty in
(*
NCic.Appl (hd:: HExtlib.mk_list(NCic.Meta (0,(0,NCic.Irl 0)))
(List.length tl)) in *)
let tcache = cache.facts in
let is_prod, is_eq =
let status, t = term_of_cic_term status gty context in
- let t = NCicReduction.whd subst context t in
+ let t = NCicReduction.whd status subst context t in
match t with
| NCic.Prod _ -> true, false
- | _ -> false, NCicParamod.is_equation metasenv subst context t
+ | _ -> false, NCicParamod.is_equation status metasenv subst context t
in
- debug_print~depth (lazy (string_of_bool is_eq));
+ debug_print ~depth (lazy (string_of_bool is_eq));
(* old
let candidates, smart_candidates =
get_candidates ~smart:(not is_eq) depth
let sm = 0 in
let smart_candidates = [] in *)
let sm = if is_eq then 0 else 2 in
- let maxd = ((depth + 1) = flags.maxdepth) in
+ (* wrong: we constraint maxdepth for equality goals to three *)
+ (* let maxdepth = if is_eq then min flags.maxdepth 6 else flags.maxdepth in *)
+ let maxd = (depth + 1 = flags.maxdepth) in
let only_one = flags.last && maxd in
- debug_print (lazy ("only_one: " ^ (string_of_bool only_one)));
- debug_print (lazy ("maxd: " ^ (string_of_bool maxd)));
+ debug_print ~depth (lazy ("only_one: " ^ (string_of_bool only_one)));
+ debug_print ~depth (lazy ("maxd: " ^ (string_of_bool maxd)));
let elems =
List.fold_left
(fun elems cand ->
else
if (maxd && not(is_prod) &
not(is_a_fact_ast status subst metasenv context cand))
- then (debug_print (lazy "pruned: not a fact"); elems)
+ then (debug_print ~depth (lazy "pruned: not a fact"); elems)
else
match try_candidate (~smart:sm)
flags depth status cache.unit_eq context cand with
else
if (maxd && not(is_prod) &&
not(is_a_fact_ast status subst metasenv context cand))
- then (debug_print (lazy "pruned: not a fact"); elems)
+ then (debug_print ~depth (lazy "pruned: not a fact"); elems)
else
- match try_candidate (~smart:1)
+ match try_candidate (~smart:2) (* was smart:1 *)
flags depth status cache.unit_eq context cand with
| None -> elems
| Some x -> x::elems)
exception Found
;;
+
(* gty is supposed to be meta-closed *)
-let is_subsumed depth status gty cache =
+let is_subsumed depth filter_depth status gty cache =
if cache=[] then false else (
debug_print ~depth (lazy("Subsuming " ^ (ppterm status gty)));
let n,h,metasenv,subst,obj = status#obj in
let ctx = ctx_of gty in
- let _ , target = term_of_cic_term status gty ctx in
- let target = NCicSubstitution.lift 1 target in
+ let _ , raw_gty = term_of_cic_term status gty ctx in
+ let target = NCicSubstitution.lift status 1 raw_gty in
+ (* we compute candidates using the perforated type *)
+ let weak_gty =
+ match target with
+ | NCic.Appl _
+ | NCic.Const _
+ | NCic.Rel _ ->
+ let raw_weak =
+ perforate_small status subst metasenv ctx raw_gty in
+ let weak = mk_cic_term ctx raw_weak in
+ debug_print ~depth (lazy ("weak_gty:" ^ NTacStatus.ppterm status weak));
+ Some (weak)
+ | _ -> None
+ in
(* candidates must only be searched w.r.t the given context *)
let candidates =
try
let idx = List.assq ctx cache in
- Ncic_termSet.elements
- (InvRelDiscriminationTree.retrieve_generalizations idx gty)
+ match weak_gty with
+ | Some weak ->
+ Ncic_termSet.elements
+ (InvRelDiscriminationTree.retrieve_unifiables idx weak)
+ |None -> []
with Not_found -> []
in
+ (* this is a dirty trick: the first argument of an application is used
+ to remember at which depth a goal failed *)
+ let filter t =
+ let ctx = ctx_of t in
+ let _, src = term_of_cic_term status t ctx in
+ match src with
+ | NCic.Appl [NCic.Implicit (`Typeof d); t]
+ when d <= depth -> Some (mk_cic_term ctx t)
+ | _ -> None in
+ let candidates =
+ if filter_depth then HExtlib.filter_map filter candidates else candidates in
debug_print ~depth
(lazy ("failure candidates: " ^ string_of_int (List.length candidates)));
try
(match snd (term_of_cic_term status src ctx) with
| NCic.Const(NReference.Ref (_,NReference.Ind _) as r)
| NCic.Appl (NCic.Const(NReference.Ref (_,NReference.Ind _) as r)::_) ->
- let _,_,itys,_,_ = NCicEnvironment.get_checked_indtys r in
+ let _,_,itys,_,_ = NCicEnvironment.get_checked_indtys status r in
(match itys with
(* | [_,_,_,[_;_]] con nat va, ovviamente, in loop *)
| [_,_,_,[_]]
let reduce ~whd ~depth status g =
let n,h,metasenv,subst,o = status#obj in
let attr, ctx, ty = NCicUtils.lookup_meta g metasenv in
- let ty = NCicUntrusted.apply_subst subst ctx ty in
+ let ty = NCicUntrusted.apply_subst status subst ctx ty in
let ty' =
- (if whd then NCicReduction.whd else NCicTacReduction.normalize) ~subst ctx ty
+ (if whd then NCicReduction.whd else NCicTacReduction.normalize) status ~subst ctx ty
in
if ty = ty' then []
else
(debug_print ~depth
- (lazy ("reduced to: "^ NCicPp.ppterm ctx subst metasenv ty'));
+ (lazy ("reduced to: "^ status#ppterm ctx subst metasenv ty'));
let metasenv =
(g,(attr,ctx,ty'))::(List.filter (fun (i,_) -> i<>g) metasenv)
in
if l0 <> [] then l0, cache
else
(* whd *)
- let l = (*reduce ~whd:true ~depth status g @*) reduce ~whd:true ~depth status g in
+ let l = reduce ~whd:true ~depth status g in
(* if l <> [] then l,cache else *)
(* backward aplications *)
let l1 =
let g = head_goals status#stack in
let sortedg =
(List.rev (MS.topological_sort g (deps status))) in
- debug_print (lazy ("old g = " ^
+ noprint (lazy ("old g = " ^
String.concat "," (List.map string_of_int g)));
- debug_print (lazy ("sorted goals = " ^
+ noprint (lazy ("sorted goals = " ^
String.concat "," (List.map string_of_int sortedg)));
let is_it i = function
| (_,Continuationals.Stack.Open j )
flags signature cache depth status : unit =
debug_print ~depth (lazy ("entering auto clusters at depth " ^
(string_of_int depth)));
- debug_print ~depth (pptrace cache.trace);
+ debug_print ~depth (pptrace status cache.trace);
(* ignore(Unix.select [] [] [] 0.01); *)
let status = clean_up_tac status in
let goals = head_goals status#stack in
if depth = 0 then raise (Proved (status, cache.trace))
else
let status = NTactics.merge_tac status in
- let cache =
- let l,tree = cache.under_inspection in
- match l with
+ let cache =
+ let l,tree = cache.under_inspection in
+ match l with
| [] -> cache (* possible because of intros that cleans the cache *)
| a::tl -> let tree = rm_from_th a tree a in
- {cache with under_inspection = tl,tree}
- in
- auto_clusters flags signature cache (depth-1) status
+ {cache with under_inspection = tl,tree}
+ in
+ auto_clusters flags signature cache (depth-1) status
else if List.length goals < 2 then
auto_main flags signature cache depth status
else
debug_print ~depth (lazy ("goals = " ^
String.concat "," (List.map string_of_int all_goals)));
let classes = HExtlib.clusters (deps status) all_goals in
- List.iter
- (fun gl ->
- if List.length gl > flags.maxwidth then
- (debug_print ~depth (lazy "FAIL GLOBAL WIDTH");
- raise (Gaveup IntSet.empty))
- else ()) classes;
+ (* if any of the classes exceed maxwidth we fail *)
+ List.iter
+ (fun gl ->
+ if List.length gl > flags.maxwidth then
+ begin
+ debug_print ~depth (lazy "FAIL GLOBAL WIDTH");
+ HLog.warn (sprintf "global width (%u) exceeded: %u"
+ flags.maxwidth (List.length gl));
+ raise (Gaveup cache.failures)
+ end else ()) classes;
if List.length classes = 1 then
let flags =
{flags with last = (List.length all_goals = 1)} in
(* no need to cluster *)
- auto_main flags signature cache depth status
+ auto_main flags signature cache depth status
else
- let classes = if top then List.rev classes else classes in
+ let classes = if top then List.rev classes else classes in
debug_print ~depth
(lazy
(String.concat "\n"
(List.map
- (fun l ->
- ("cluster:" ^ String.concat "," (List.map string_of_int l)))
+ (fun l ->
+ ("cluster:" ^ String.concat "," (List.map string_of_int l)))
classes)));
- let status,trace,b =
+ (* we now process each cluster *)
+ let status,cache,b =
List.fold_left
- (fun (status,trace,b) gl ->
- let cache = {cache with trace = trace} in
+ (fun (status,cache,b) gl ->
let flags =
{flags with last = (List.length gl = 1)} in
let lold = List.length status#stack in
with
| Proved(status,trace) ->
let status = NTactics.merge_tac status in
+ let cache = {cache with trace = trace} in
let lnew = List.length status#stack in
assert (lold = lnew);
- (status,trace,true)
- | Gaveup _ when top -> (status,trace,b)
+ (status,cache,true)
+ | Gaveup failures when top ->
+ let cache = {cache with failures = failures} in
+ (status,cache,b)
)
- (status,cache.trace,false) classes
+ (status,cache,false) classes
in
let rec final_merge n s =
if n = 0 then s else final_merge (n-1) (NTactics.merge_tac s)
in let status = final_merge depth status
- in if b then raise (Proved(status,trace)) else raise (Gaveup IntSet.empty)
+ in if b then raise (Proved(status,cache.trace)) else raise (Gaveup cache.failures)
and
(* BRAND NEW VERSION *)
auto_main flags signature cache depth status: unit =
debug_print ~depth (lazy "entering auto main");
- debug_print ~depth (pptrace cache.trace);
+ debug_print ~depth (pptrace status cache.trace);
debug_print ~depth (lazy ("stack length = " ^
(string_of_int (List.length status#stack))));
(* ignore(Unix.select [] [] [] 0.01); *)
else
let ng = List.length goals in
(* moved inside auto_clusters *)
- if ng > flags.maxwidth then
- (print ~depth (lazy "FAIL LOCAL WIDTH"); raise (Gaveup IntSet.empty))
- else if depth = flags.maxdepth then
- raise (Gaveup IntSet.empty)
+ if ng > flags.maxwidth then begin
+ debug_print ~depth (lazy "FAIL LOCAL WIDTH");
+ HLog.warn (sprintf "local width (%u) exceeded: %u"
+ flags.maxwidth ng);
+ raise (Gaveup cache.failures)
+ end else if depth = flags.maxdepth then
+ raise (Gaveup cache.failures)
else
let status = NTactics.branch_tac ~force:true status in
let g,gctx, gty = current_goal status in
let ctx,ty = close status g in
let closegty = mk_cic_term ctx ty in
let status, gty = apply_subst status gctx gty in
- debug_print ~depth (lazy("Attacking goal " ^ (string_of_int g) ^" : "^ppterm status gty));
- if is_subsumed depth status closegty (snd cache.under_inspection) then
+ debug_print ~depth (lazy("Attacking goal " ^
+ string_of_int g ^ " : "^ppterm status gty));
+ debug_print ~depth (lazy ("current failures: " ^
+ string_of_int (List.length (all_elements ctx cache.failures))));
+ let is_eq =
+ let _,_,metasenv,subst,_ = status#obj in
+ NCicParamod.is_equation status metasenv subst ctx ty in
+ (* if the goal is an equality we artificially raise its depth up to
+ flags.maxdepth - 1 *)
+ if (not flags.last && is_eq && (depth < (flags.maxdepth -2))) then
+ (* for efficiency reasons, in this case we severely cripple the
+ search depth *)
+ (debug_print ~depth (lazy ("RAISING DEPTH TO " ^ string_of_int (depth+1)));
+ auto_main flags signature cache (depth+1) status)
+ (* check for loops *)
+ else if is_subsumed depth false status closegty (snd cache.under_inspection) then
(debug_print ~depth (lazy "SUBSUMED");
- raise (Gaveup IntSet.add g IntSet.empty))
+ raise (Gaveup cache.failures))
+ (* check for failures *)
+ else if is_subsumed depth true status closegty cache.failures then
+ (debug_print ~depth (lazy "ALREADY MET");
+ raise (Gaveup cache.failures))
else
let new_sig = height_of_goal g status in
if new_sig < signature then
- (debug_print (lazy ("news = " ^ (string_of_int new_sig)));
- debug_print (lazy ("olds = " ^ (string_of_int signature))));
+ (debug_print ~depth (lazy ("news = " ^ (string_of_int new_sig)));
+ debug_print ~depth (lazy ("olds = " ^ (string_of_int signature))));
let alternatives, cache =
do_something signature flags status g depth gty cache in
let loop_cache =
- let l,tree = cache.under_inspection in
- let l,tree = closegty::l, add_to_th closegty tree closegty in
- {cache with under_inspection = l,tree} in
- List.iter
- (fun ((_,t),status) ->
+ if flags.last then
+ let l,tree = cache.under_inspection in
+ let l,tree = closegty::l, add_to_th closegty tree closegty in
+ {cache with under_inspection = l,tree}
+ else cache in
+ let failures =
+ List.fold_left
+ (fun allfailures ((_,t),status) ->
debug_print ~depth
(lazy ("(re)considering goal " ^
(string_of_int g) ^" : "^ppterm status gty));
debug_print (~depth:depth)
- (lazy ("Case: " ^ NotationPp.pp_term t));
+ (lazy ("Case: " ^ NotationPp.pp_term status t));
let depth,cache =
if t=Ast.Ident("__whd",None) ||
t=Ast.Ident("__intros",None)
then depth, cache
else depth+1,loop_cache in
- let cache = add_to_trace ~depth cache t in
+ let cache = add_to_trace status ~depth cache t in
+ let cache = {cache with failures = allfailures} in
try
- auto_clusters flags signature cache depth status
- with Gaveup _ ->
+ auto_clusters flags signature cache depth status;
+ assert false;
+ with Gaveup fail ->
debug_print ~depth (lazy "Failed");
- ())
- alternatives;
- raise (debug_print(lazy "no more candidates"); Gaveup IntSet.empty)
+ fail)
+ cache.failures alternatives in
+ let failures =
+ if flags.last then
+ let newfail =
+ let dty = NCic.Appl [NCic.Implicit (`Typeof depth); ty] in
+ mk_cic_term ctx dty
+ in
+ (*prerr_endline ("FAILURE : " ^ ppterm status gty);*)
+ add_to_th newfail failures closegty
+ else failures in
+ debug_print ~depth (lazy "no more candidates");
+ raise (Gaveup failures)
;;
let int name l def =
debug_print (lazy(
NDiscriminationTree.NCicIndexable.string_of_path p ^ " |--> " ^
String.concat "\n " (List.map (
- NCicPp.ppterm ~metasenv:[] ~context:[] ~subst:[])
+ status#ppterm ~metasenv:[] ~context:[] ~subst:[])
(NDiscriminationTree.TermSet.elements t))
)));
*)
app_counter:= 0;
let rec up_to x y =
if x > y then
- (print(lazy
+ (debug_print(lazy
("TIME ELAPSED:"^string_of_float(Unix.gettimeofday()-.initial_time)));
debug_print(lazy
("Applicative nodes:"^string_of_int !app_counter));
debug_print (lazy ("proved at depth " ^ string_of_int x));
List.iter (toref incr_uses statistics) trace;
let trace = cleanup_trace s trace in
- let _ = debug_print (pptrace trace) in
+ let _ = debug_print (pptrace status trace) in
let stack =
match s#stack with
| (g,t,k,f) :: rest -> (filter_open g,t,k,f):: rest
oldstatus#set_status s
in
let s = up_to depth depth in
- print (print_stat statistics);
+ debug_print (print_stat status statistics);
debug_print(lazy
("TIME ELAPSED:"^string_of_float(Unix.gettimeofday()-.initial_time)));
debug_print(lazy
fast_eq_check_tac ~params
else auto_tac ~params ?trace_ref
;;
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+