open AutoTypes;;
open AutoCache;;
-let debug_print s = () (* prerr_endline s;; *)
+let debug_print s = prerr_endline (Lazy.force s);;
-(* {{{ *********** local given_clause wrapper ***********)
+(* functions for retrieving theorems *)
-let given_clause dbd ?tables maxm auto cache subst flags smart_flag status =
- let active,passive,bag,cache,maxmeta,goal_steps,saturation_steps,timeout =
- match tables with
- | None ->
- (* first time, do a huge saturation *)
- let bag, equalities, cache, maxmeta =
- Saturation.find_equalities dbd status smart_flag auto cache
- in
- let passive = Saturation.make_passive equalities in
- let active = Saturation.make_active [] in
- let goal_steps, saturation_steps, timeout =
- if flags.use_only_paramod then max_int,max_int,flags.timeout
- else 82, 82, infinity
- in
- let maxm = max maxm maxmeta in
- active,passive,bag,cache,maxm,goal_steps,saturation_steps,timeout
- | Some (active,passive,bag,oldcache) ->
- (* saturate a bit more if cache cahnged *)
- let bag, equalities, cache, maxm =
- if cache_size oldcache <> cache_size cache then
- Saturation.close_more
- bag active maxm status smart_flag auto cache
- else
- bag, [], cache, maxm
- in
- let minsteps = List.length equalities in
- let passive = Saturation.add_to_passive equalities passive in
- let goal_steps, saturation_steps, timeout =
- if flags.use_only_paramod then max_int,max_int,flags.timeout
- else max 50 minsteps, minsteps, infinity
- in
- active,passive,bag,cache,maxm,goal_steps,saturation_steps,timeout
+exception FillingFailure of AutoCache.cache * int
+
+
+
+let find_library_theorems dbd proof gl =
+ let univ = MetadataQuery.universe_of_goals ~dbd proof gl in
+ let terms = List.map CicUtil.term_of_uri univ in
+ List.map
+ (fun t ->
+ (t,fst(CicTypeChecker.type_of_aux' [] [] t CicUniv.empty_ugraph)))
+ terms
+
+let find_context_theorems context metasenv =
+ let l,_ =
+ List.fold_left
+ (fun (res,i) ctxentry ->
+ match ctxentry with
+ | Some (_,Cic.Decl t) ->
+ (Cic.Rel i, CicSubstitution.lift i t)::res,i+1
+ | Some (_,Cic.Def (_,Some t)) ->
+ (Cic.Rel i, CicSubstitution.lift i t)::res,i+1
+ | Some (_,Cic.Def (_,None)) ->
+ let t = Cic.Rel i in
+ let ty,_ =
+ CicTypeChecker.type_of_aux'
+ metasenv context t CicUniv.empty_ugraph
+ in
+ (t,ty)::res,i+1
+ | _ -> res,i+1)
+ ([],1) context
+ in l
+
+let rec is_an_equality = function
+ | Cic.Appl [Cic.MutInd (uri, _, _); _; _; _]
+ when (LibraryObjects.is_eq_URI uri) -> true
+ | Cic.Prod (_, _, t) -> is_an_equality t
+ | _ -> false
+;;
+
+let partition_equalities =
+ List.partition (fun (_,ty) -> is_an_equality ty)
+
+
+let default_auto maxm _ cache _ _ _ _ = [],cache,maxm ;;
+
+
+let is_unit_equation context metasenv oldnewmeta term =
+ let head, metasenv, args, newmeta =
+ ProofEngineHelpers.saturate_term oldnewmeta metasenv context term 0
in
- let res,actives,passives,maxmeta =
- Saturation.given_clause bag maxmeta status active passive
- goal_steps saturation_steps timeout
+ let propositional_args =
+ HExtlib.filter_map
+ (function
+ | Cic.Meta(i,_) ->
+ let _,_,mt = CicUtil.lookup_meta i metasenv in
+ let sort,u =
+ CicTypeChecker.type_of_aux' metasenv context mt
+ CicUniv.empty_ugraph
+ in
+ let b, _ =
+ CicReduction.are_convertible ~metasenv context
+ sort (Cic.Sort Cic.Prop) u
+ in
+ if b then Some i else None
+ | _ -> assert false)
+ args
+ in
+ if propositional_args = [] then
+ let newmetas = List.filter (fun (i,_,_) -> i >= oldnewmeta) metasenv in
+ Some (args,metasenv,newmetas,head,newmeta)
+ else None
+
+let retrieve_equations cache =
+ let eq_uri =
+ match LibraryObjects.eq_URI() with
+ | None ->assert false
+ | Some eq_uri -> eq_uri in
+ let fake= Cic.Meta(-1,[]) in
+ let fake_eq = Cic.Appl [Cic.MutInd (eq_uri,0, []);Cic.Meta(-1,[]);
+ Cic.Meta(-2,[]); Cic.Meta(-3,[])] in
+ let candidates = get_candidates cache fake_eq in
+ let debug_msg =
+ (lazy ("candidates for " ^ (CicPp.ppterm fake_eq) ^ " = " ^
+ (String.concat "\n" (List.map CicPp.ppterm candidates)))) in
+ debug_print debug_msg;
+ candidates
+
+(*
+ let proof, goalno = status in
+ let _, metasenv,_,_ = proof in
+ let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
+ let eq_uri = eq_of_goal type_of_goal in
+ let env = (metasenv, context, CicUniv.empty_ugraph) in
+ let eq_indexes, equalities, maxm, cache =
+ Equality_retrieval.find_context_equalities maxmeta bag auto context proof cache
in
- res,actives,passives,bag,cache,maxmeta
+ prerr_endline (">>>>>>> gained from a new context saturation >>>>>>>>>" ^
+ string_of_int maxm);
+ List.iter
+ (fun e -> prerr_endline (Equality.string_of_equality ~env e))
+ equalities;
+ prerr_endline ">>>>>>>>>>>>>>>>>>>>>>";
+ let equalities =
+ HExtlib.filter_map
+ (fun e -> forward_simplify bag eq_uri env e active)
+ equalities
+ in
+ prerr_endline ">>>>>>>>>> after simplify >>>>>>>>>>>>";
+ List.iter
+ (fun e -> prerr_endline (Equality.string_of_equality ~env e)) equalities;
+ prerr_endline (">>>>>>>>>>>>>>>>>>>>>>" ^ string_of_int maxm);
+ bag, equalities, cache, maxm
+*)
+
+let build_equality bag head args proof newmetas maxmeta =
+ match head with
+ | Cic.Appl [Cic.MutInd (uri, _, _); ty; t1; t2] ->
+ let p =
+ if args = [] then proof else Cic.Appl (proof::args)
+ in
+ let o = !Utils.compare_terms t1 t2 in
+ let stat = (ty,t1,t2,o) in
+ (* let w = compute_equality_weight stat in *)
+ let w = 0 in
+ let proof = Equality.Exact p in
+ let e = Equality.mk_equality bag (w, proof, stat, newmetas) in
+ (* to clean the local context of metas *)
+ Equality.fix_metas bag maxmeta e
+ | _ -> assert false
;;
-(* }}} ****************************************************************)
+let partition_unit_equalities context metasenv newmeta bag equations =
+ List.fold_left
+ (fun (units,other,maxmeta)(t,ty) ->
+ match is_unit_equation context metasenv maxmeta ty with
+ | Some (args,metasenv,newmetas,head,newmeta') ->
+ let maxmeta,equality =
+ build_equality bag head args t newmetas newmeta' in
+ equality::units,other,maxmeta
+ | None ->
+ units,(t,ty)::other,maxmeta)
+ ([],[],newmeta) equations
-(* {{{ **************** applyS *******************)
+let empty_tables =
+ (Saturation.make_active [],
+ Saturation.make_passive [],
+ Equality.mk_equality_bag)
+
+let init_cache_and_tables dbd use_library (proof, goal) =
+ let _, metasenv, _, _ = proof in
+ let newmeta = CicMkImplicit.new_meta metasenv [] in
+ let _,context,_ = CicUtil.lookup_meta goal metasenv in
+ let eq_uri =
+ match LibraryObjects.eq_URI() with
+ | None ->assert false
+ | Some eq_uri -> eq_uri in
+ let ct = find_context_theorems context metasenv in
+ let lt =
+ if use_library then
+ find_library_theorems dbd metasenv [goal]
+ else [] in
+ (* all equations are added to the cache *)
+ prerr_endline ("ho trovato " ^ (string_of_int (List.length lt)));
+ let cache = cache_add_list AutoCache.cache_empty context (ct@lt) in
+ let equations,others = partition_equalities (ct@lt) in
+ let bag = Equality.mk_equality_bag () in
+ let units, other_equalities, newmeta =
+ partition_unit_equalities context metasenv newmeta bag equations in
+ (* other equations are added to the cache; note that untis equalities
+ are not)*)
+ let env = (metasenv, context, CicUniv.empty_ugraph) in
+ (* let equalities =
+ Saturation.simplify_equalities bag eq_uri env units in *)
+ let passive = Saturation.make_passive units in
+ let no = List.length units in
+ prerr_endline ("No = " ^ (string_of_int no));
+ let active = Saturation.make_active [] in
+ let active,passive,newmeta =
+ Saturation.pump_actives context bag newmeta active passive (no+1) infinity
+ in
+ (active,passive,bag),cache,newmeta
+
+let fill_hypothesis context metasenv oldnewmeta term tables cache auto fast =
+ let head, metasenv, args, newmeta =
+ ProofEngineHelpers.saturate_term oldnewmeta metasenv context term 0
+ in
+ let propositional_args =
+ HExtlib.filter_map
+ (function
+ | Cic.Meta(i,_) ->
+ let _,_,mt = CicUtil.lookup_meta i metasenv in
+ let sort,u =
+ CicTypeChecker.type_of_aux' metasenv context mt
+ CicUniv.empty_ugraph
+ in
+ let b, _ =
+ CicReduction.are_convertible ~metasenv context
+ sort (Cic.Sort Cic.Prop) u
+ in
+ if b then Some i else None
+ | _ -> assert false)
+ args
+ in
+ let results,cache,newmeta =
+ if propositional_args = [] then
+ let newmetas = List.filter (fun (i,_,_) -> i >= oldnewmeta) metasenv in
+ [args,metasenv,newmetas,head,newmeta],cache,newmeta
+ else
+ let proof =
+ None,metasenv,term,term (* term non e' significativo *)
+ in
+ let flags =
+ if fast then
+ {AutoTypes.default_flags() with
+ AutoTypes.timeout = Unix.gettimeofday() +. 1.0;
+ maxwidth = 2;maxdepth = 2;
+ use_paramod=true;use_only_paramod=false}
+ else
+ {AutoTypes.default_flags() with
+ AutoTypes.timeout = Unix.gettimeofday() +. 1.0;
+ maxwidth = 2;maxdepth = 4;
+ use_paramod=true;use_only_paramod=false}
+ in
+ match auto newmeta tables cache context metasenv propositional_args flags with
+ | [],cache,newmeta -> raise (FillingFailure (cache,newmeta))
+ | substs,cache,newmeta ->
+ List.map
+ (fun subst ->
+ let metasenv =
+ CicMetaSubst.apply_subst_metasenv subst metasenv
+ in
+ let head = CicMetaSubst.apply_subst subst head in
+ let newmetas =
+ List.filter (fun (i,_,_) ->i >= oldnewmeta) metasenv
+ in
+ let args = List.map (CicMetaSubst.apply_subst subst) args in
+ let newm = CicMkImplicit.new_meta metasenv subst in
+ args,metasenv,newmetas,head,max newm newmeta)
+ substs, cache, newmeta
+ in
+ results,cache,newmeta
+
+let build_equalities auto context metasenv tables cache newmeta equations =
+ List.fold_left
+ (fun (facts,cache,newmeta) (t,ty) ->
+ (* in any case we add the equation to the cache *)
+ let cache = AutoCache.cache_add_list cache context [(t,ty)] in
+ try
+ let saturated,cache,newmeta =
+ fill_hypothesis context metasenv newmeta ty tables cache auto true
+ in
+ let (active,passive,bag) = tables in
+ let eqs,bag,newmeta =
+ List.fold_left
+ (fun (acc,bag,newmeta) (args,metasenv,newmetas,head,newmeta') ->
+ let maxmeta,equality =
+ build_equality bag head args t newmetas newmeta'
+ in
+ equality::acc,bag,maxmeta)
+ ([],bag,newmeta) saturated
+ in
+ (eqs@facts, cache, newmeta)
+ with FillingFailure (cache,newmeta) ->
+ (* if filling hypothesis fails we add the equation to
+ the cache *)
+ (facts,cache,newmeta)
+ )
+ ([],cache,newmeta) equations
+
+let close_more tables maxmeta context status auto cache =
+ let (active,passive,bag) = tables in
+ let proof, goalno = status in
+ let _, metasenv,_,_ = proof in
+ let equations = retrieve_equations cache in
+ let eqs_and_types =
+ HExtlib.filter_map
+ (fun t ->
+ let ty,_ =
+ CicTypeChecker.type_of_aux' metasenv context t CicUniv.empty_ugraph in
+ (* retrieve_equations could also return flexible terms *)
+ if is_an_equality ty then Some(t,ty) else None)
+ equations in
+ let units, cache, maxm =
+ build_equalities auto context metasenv tables cache maxmeta eqs_and_types in
+ prerr_endline (">>>>>>> gained from a new context saturation >>>>>>>>>" ^
+ string_of_int maxm);
+ List.iter
+ (fun e -> prerr_endline (Equality.string_of_equality e))
+ units;
+ prerr_endline ">>>>>>>>>>>>>>>>>>>>>>";
+ let passive = Saturation.add_to_passive units passive in
+ let no = List.length units in
+ prerr_endline ("No = " ^ (string_of_int no));
+ let active,passive,newmeta =
+ Saturation.pump_actives context bag maxm active passive (no+1) infinity
+ in
+ (active,passive,bag),cache,newmeta
+
+let find_context_equalities
+ maxmeta bag context proof cache
+=
+ prerr_endline "find_equalities";
+ let module C = Cic in
+ let module S = CicSubstitution in
+ let module T = CicTypeChecker in
+ let _,metasenv,_,_ = proof in
+ let newmeta = max (ProofEngineHelpers.new_meta_of_proof ~proof) maxmeta in
+ (* if use_auto is true, we try to close the hypothesis of equational
+ statements using auto; a naif, and probably wrong approach *)
+ let rec aux cache index newmeta = function
+ | [] -> [], newmeta,cache
+ | (Some (_, C.Decl (term)))::tl ->
+ debug_print
+ (lazy
+ (Printf.sprintf "Examining: %d (%s)" index (CicPp.ppterm term)));
+ let do_find context term =
+ match term with
+ | C.Prod (name, s, t) when is_an_equality t ->
+ (try
+
+ let term = S.lift index term in
+ let saturated,cache,newmeta =
+ fill_hypothesis context metasenv newmeta term
+ empty_tables cache default_auto false
+ in
+ let eqs,newmeta =
+ List.fold_left
+ (fun (acc,newmeta) (args,metasenv,newmetas,head,newmeta') ->
+ let newmeta, equality =
+ build_equality
+ bag head args (Cic.Rel index) newmetas (max newmeta newmeta')
+ in
+ equality::acc, newmeta + 1)
+ ([],newmeta) saturated
+ in
+ eqs, newmeta, cache
+ with FillingFailure (cache,newmeta) ->
+ [],newmeta,cache)
+ | C.Appl [C.MutInd (uri, _, _); ty; t1; t2]
+ when LibraryObjects.is_eq_URI uri ->
+ let term = S.lift index term in
+ let newmeta, e =
+ build_equality bag term [] (Cic.Rel index) [] newmeta
+ in
+ [e], (newmeta+1),cache
+ | _ -> [], newmeta, cache
+ in
+ let eqs, newmeta, cache = do_find context term in
+ let rest, newmeta,cache = aux cache (index+1) newmeta tl in
+ List.map (fun x -> index,x) eqs @ rest, newmeta, cache
+ | _::tl ->
+ aux cache (index+1) newmeta tl
+ in
+ let il, maxm, cache =
+ aux cache 1 newmeta context
+ in
+ let indexes, equalities = List.split il in
+ indexes, equalities, maxm, cache
+;;
+
+(***************** applyS *******************)
let new_metasenv_and_unify_and_t
dbd flags proof goal ?tables newmeta' metasenv' context term' ty termty
PrimitiveTactics.apply_with_subst ~term:term'' ~subst:[] (proof''',goal)
in
match
- let cache = cache_empty in
- given_clause dbd ?tables 0 None cache [] flags true (proof'''',newmeta)
+ let (active, passive,bag), cache, maxmeta =
+ init_cache_and_tables dbd true (proof'''',newmeta)
+ in
+ Saturation.given_clause bag maxmeta (proof'''',newmeta) active passive
+ max_int max_int flags.timeout
with
- | None, active, passive, bag,_,_ ->
+ | None, _,_,_ ->
raise (ProofEngineTypes.Fail (lazy ("FIXME: propaga le tabelle")))
- | Some (_,proof''''',_), active, passive,bag,_,_ ->
+ | Some (_,proof''''',_), active,passive,_ ->
subst,proof''''',
ProofEngineHelpers.compare_metasenvs ~oldmetasenv
~newmetasenv:(let _,m,_,_ = proof''''' in m), active, passive
subst, proof, gl, active, passive
;;
-(* }}} **************** applyS **************)
-
-(* {{{ ***************** AUTO ********************)
+(****************** AUTO ********************)
let mk_irl ctx = CicMkImplicit.identity_relocation_list_for_metavariable ctx;;
let ugraph = CicUniv.empty_ugraph;;
;;
let is_in_prop context subst metasenv ty =
let sort,u = typeof ~subst metasenv context ty CicUniv.empty_ugraph in
- fst (CicReduction.are_convertible context (Cic.Sort Cic.Prop) sort u)
+ fst (CicReduction.are_convertible context sort (Cic.Sort Cic.Prop) u)
;;
let assert_proof_is_valid proof metasenv context goalty =
let ty,u = typeof metasenv context proof CicUniv.empty_ugraph in
let _,context,ty = CicUtil.lookup_meta g metasenv in
try
let sort,u = typeof ~subst metasenv context ty ugraph in
- fst (CicReduction.are_convertible context (Cic.Sort Cic.Prop) sort u)
+ let b,_ =
+ CicReduction.are_convertible
+ ~subst ~metasenv context sort (Cic.Sort Cic.Prop) u in
+ b
with
| CicTypeChecker.AssertFailure s
| CicTypeChecker.TypeCheckerFailure s ->
- debug_print (ppterm context (CicMetaSubst.apply_subst subst ty));
- debug_print (Lazy.force s);
+ debug_print
+ (lazy (ppterm context (CicMetaSubst.apply_subst subst ty)));
+ debug_print s;
false)
(* FIXME... they should type! *)
gl
in
let tys =
List.map
- (fun (i,_) ->
- let _,_,ty = CicUtil.lookup_meta i metasenv in i,ty) open_goals
+ (fun (i,sort) ->
+ let _,_,ty = CicUtil.lookup_meta i metasenv in i,ty,sort) open_goals
in
- debug_print (" OPEN: "^
- String.concat " "
- (List.map (fun (i,t) -> string_of_int i ^":"^ppterm t) tys));
+ debug_print (lazy (" OPEN: "^
+ String.concat "\n"
+ (List.map
+ (function
+ | (i,t,P) -> string_of_int i (* ":"^ppterm t^ "Prop" *)
+ | (i,t,T) -> string_of_int i ) (* ":"^ppterm t^ "Type")*)
+ tys)));
open_goals
;;
;;
let equational_case
- dbd tables maxm auto cache depth fake_proof goalno goalty subst context
+ tables maxm cache depth fake_proof goalno goalty subst context
flags
=
+ let active,passive,bag = tables in
let ppterm = ppterm context in
- prerr_endline ("PARAMOD SU: " ^ string_of_int goalno ^ " " ^ ppterm goalty );
+ let status = (fake_proof,goalno) in
+ if flags.use_only_paramod then
+ begin
+ prerr_endline ("PARAMODULATION SU: " ^
+ string_of_int goalno ^ " " ^ ppterm goalty );
+ let goal_steps, saturation_steps, timeout = max_int,max_int,flags.timeout in
+ match
+ Saturation.given_clause bag maxm status active passive
+ goal_steps saturation_steps timeout
+ with
+ | None, active, passive, maxmeta ->
+ [], (active,passive,bag), cache, maxmeta, flags
+ | Some(subst',(_,metasenv,proof,_),open_goals),active,passive,maxmeta ->
+ assert_subst_are_disjoint subst subst';
+ let subst = subst@subst' in
+ let open_goals = order_new_goals metasenv subst open_goals ppterm in
+ let open_goals = List.map (fun (x,sort) -> x,depth,sort) open_goals in
+ [metasenv,subst,open_goals], (active,passive,bag),
+ cache, maxmeta, flags
+ end
+ else
+ begin
+ prerr_endline ("SUBSUMPTION SU: " ^ string_of_int goalno ^ " " ^ ppterm goalty );
+ let res, maxmeta = Saturation.all_subsumed bag maxm status active passive in
+ assert (maxmeta >= maxm);
+ let res' =
+ List.map
+ (fun subst',(_,metasenv,proof,_),open_goals ->
+ assert_subst_are_disjoint subst subst';
+ let subst = subst@subst' in
+ let open_goals = order_new_goals metasenv subst open_goals ppterm in
+ let open_goals = List.map (fun (x,sort) -> x,depth,sort) open_goals in
+ metasenv,subst,open_goals)
+ res in
+ res', (active,passive,bag), cache, maxmeta, flags
+ end
+
(*
- prerr_endline "<CACHE>";
- prerr_endline (cache_print context cache);
- prerr_endline "</CACHE>";
-*)
- match
- given_clause dbd ?tables maxm auto cache subst flags false (fake_proof,goalno)
- with
- | None, active,passive, bag, cache, maxmeta ->
- let tables = Some (active,passive,bag,cache) in
- None, tables, cache, maxmeta
- | Some(subst',(_,metasenv,proof,_),open_goals),active,passive,bag,cache,maxmeta ->
- let tables = Some (active,passive,bag,cache) in
+ let active,passive,bag,cache,maxmeta,flags,goal_steps,saturation_steps,timeout =
+ given_clause_params
+ tables maxm auto cache subst flags context status in
+ match
+ Saturation.given_clause bag maxmeta status active passive
+ goal_steps saturation_steps timeout
+ with
+ | None, active, passive, maxmeta ->
+ None, (active,passive,bag), cache, maxmeta, flags
+ | Some(subst',(_,metasenv,proof,_),open_goals),active,passive,maxmeta ->
assert_subst_are_disjoint subst subst';
let subst = subst@subst' in
let open_goals = order_new_goals metasenv subst open_goals ppterm in
- let open_goals = List.map (fun (x,sort) -> x,depth-1,sort) open_goals in
- Some [metasenv,subst,open_goals], tables, cache, maxmeta
+ let open_goals = List.map (fun (x,sort) -> x,depth,sort) open_goals in
+ Some [metasenv,subst,open_goals], (active,passive,bag), cache, maxmeta, flags
+*)
;;
let try_candidate
- goalty dbd tables maxm subst fake_proof goalno depth context cand
+ goalty tables maxm subst fake_proof goalno depth context cand
=
let ppterm = ppterm context in
try
PrimitiveTactics.apply_with_subst
~maxmeta:maxm ~term:cand ~subst (fake_proof,goalno)
in
- debug_print (" OK: " ^ ppterm cand);
+ debug_print (lazy (" OK: " ^ ppterm cand));
+ let metasenv = CicRefine.pack_coercion_metasenv metasenv in
assert (maxmeta >= maxm);
(*FIXME:sicuro che posso @?*)
assert_subst_are_disjoint subst subst';
;;
let applicative_case
- dbd tables maxm depth subst fake_proof goalno goalty metasenv context cache
+ tables maxm depth subst fake_proof goalno goalty metasenv context cache
=
let candidates = get_candidates cache goalty in
+ let debug_msg =
+ (lazy ("candidates for " ^ (CicPp.ppterm goalty) ^ " = " ^
+ (String.concat "\n" (List.map CicPp.ppterm candidates)))) in
+ debug_print debug_msg;
let tables, elems, maxm =
List.fold_left
(fun (tables,elems,maxm) cand ->
match
try_candidate goalty
- dbd tables maxm subst fake_proof goalno depth context cand
+ tables maxm subst fake_proof goalno depth context cand
with
| None, tables,maxm -> tables,elems, maxm
| Some x, tables, maxm -> tables,x::elems, maxm)
(tables,[],maxm) candidates
in
let elems = sort_new_elems elems in
- elems, tables, cache, maxm
+ elems, tables, cache, maxm
;;
(* Works if there is no dependency over proofs *)
let is_a_green_cut goalty =
CicUtil.is_meta_closed goalty
;;
+
let prop = function (_,_,P) -> true | _ -> false;;
let calculate_timeout flags =
if flags.timeout = 0. then
cache k
;;
-let rec auto_main dbd tables maxm context flags elems cache =
- let callback_for_paramod maxm flags proof commonctx cache l =
- let flags = {flags with use_paramod = false;dont_cache_failures=true} in
- let _,metasenv,_,_ = proof in
- let oldmetasenv = metasenv in
- match
- auto_all_solutions
- dbd tables maxm cache commonctx metasenv l flags
- with
- | [],cache,maxm -> [],cache,maxm
- | solutions,cache,maxm ->
- let solutions =
- HExtlib.filter_map
- (fun (subst,newmetasenv) ->
- let opened =
- ProofEngineHelpers.compare_metasenvs ~oldmetasenv ~newmetasenv
- in
- if opened = [] then Some subst else None)
- solutions
- in
- solutions,cache,maxm
- in
+let rec auto_main tables maxm context flags elems cache =
let flags = calculate_timeout flags in
let ppterm = ppterm context in
let irl = mk_irl context in
- let rec aux tables maxm cache = function (* elems in OR *)
+ let rec aux flags tables maxm cache = function (* elems in OR *)
| [] -> Fail "no more steps can be done", tables, cache, maxm
(*COMPLETE FAILURE*)
| (metasenv,subst,[])::tl ->
Success (metasenv,subst,tl), tables, cache,maxm (* solution::cont *)
| (metasenv,subst,goals)::tl when
List.length (List.filter prop goals) > flags.maxwidth ->
- debug_print (" FAILURE(width): " ^ string_of_int (List.length goals));
- aux tables maxm cache tl (* FAILURE (width) *)
+ debug_print
+ (lazy (" FAILURE(width): " ^ string_of_int (List.length goals)));
+ aux flags tables maxm cache tl (* FAILURE (width) *)
| (metasenv,subst,((goalno,depth,sort) as elem)::gl)::tl ->
if Unix.gettimeofday() > flags.timeout then
Fail "timeout",tables,cache,maxm
else
try
let _,cc,goalty = CicUtil.lookup_meta goalno metasenv in
- debug_print ("INSPECTING " ^ string_of_int goalno^ ":"^ppterm goalty);
+ debug_print
+ (lazy ("INSPECTING " ^ string_of_int goalno^ ":"^ppterm goalty));
+ debug_print (lazy (AutoCache.cache_print context cache));
if sort = T && tl <> [] then (* FIXME!!!! *)
- (debug_print (" FAILURE(not in prop)");
- aux tables maxm cache tl (* FAILURE (not in prop) *))
+ (debug_print
+ (lazy (" FAILURE(not in prop)"));
+ aux flags tables maxm cache tl (* FAILURE (not in prop) *))
else
- match aux_single tables maxm cache metasenv subst elem goalty cc with
+ match aux_single flags tables maxm cache metasenv subst elem goalty cc with
| Fail s, tables, cache, maxm' ->
assert(maxm' >= maxm);let maxm = maxm' in
debug_print
- (" FAIL "^s^": "^string_of_int goalno^":"^ppterm goalty);
+ (lazy
+ (" FAIL "^s^": "^string_of_int goalno^":"^ppterm goalty));
let cache =
if flags.dont_cache_failures then
cache_remove_underinspection cache goalty
else cache_add_failure cache goalty depth
in
- aux tables maxm cache tl
+ aux flags tables maxm cache tl
| Success (metasenv,subst,others), tables, cache, maxm' ->
assert(maxm' >= maxm);let maxm = maxm' in
(* others are alternatives in OR *)
try
let goal = Cic.Meta(goalno,irl) in
let proof = CicMetaSubst.apply_subst subst goal in
- debug_print ("DONE: " ^ ppterm goalty^" with: "^ppterm proof);
+ debug_print
+ (lazy ("DONE: " ^ ppterm goalty^" with: "^ppterm proof));
if is_a_green_cut goalty then
(assert_proof_is_valid proof metasenv context goalty;
let cache = cache_add_success sort cache goalty proof in
- aux tables maxm cache ((metasenv,subst,gl)::tl))
+ aux flags tables maxm cache ((metasenv,subst,gl)::tl))
else
(let goalty = CicMetaSubst.apply_subst subst goalty in
assert_proof_is_valid proof metasenv context goalty;
(fun (metasenv,subst,goals) -> (metasenv,subst,goals@gl))
others
in
- aux tables maxm cache ((metasenv,subst,gl)::others@tl))
+ aux flags tables maxm cache ((metasenv,subst,gl)::others@tl))
with CicUtil.Meta_not_found i when i = goalno ->
assert false
with CicUtil.Meta_not_found i when i = goalno ->
(* goalno was closed by sideeffect *)
- debug_print ("Goal "^string_of_int goalno^" closed by sideeffect");
- aux tables maxm cache ((metasenv,subst,gl)::tl)
- and aux_single tables maxm cache metasenv subst (goalno, depth, _) goalty cc =
+ debug_print
+ (lazy ("Goal "^string_of_int goalno^" closed by sideeffect"));
+ aux flags tables maxm cache ((metasenv,subst,gl)::tl)
+
+ and aux_single flags tables maxm cache metasenv subst (goalno, depth, _) goalty cc =
let goalty = CicMetaSubst.apply_subst subst goalty in
(* else if not (is_in_prop context subst metasenv goalty) then Fail,cache *)
(* FAILURE (euristic cut) *)
+ prerr_endline ("DEPTH = +++++++= "^ (string_of_int depth));
match cache_examine cache goalty with
| Failed_in d when d >= depth ->
Fail ("depth " ^ string_of_int d ^ ">=" ^ string_of_int depth),
assert_subst_are_disjoint subst [entry];
let subst = entry :: subst in
let metasenv = CicMetaSubst.apply_subst_metasenv subst metasenv in
- debug_print (" CACHE HIT!");
+ debug_print (lazy (" CACHE HIT!"));
Success (metasenv, subst, []), tables, cache, maxm
| UnderInspection -> Fail "looping",tables,cache, maxm
| Notfound
| Failed_in _ when depth > 0 -> (* we have more depth now *)
let cache = cache_add_underinspection cache goalty depth in
let fake_proof = None,metasenv,Cic.Meta(goalno,irl),goalty in
- let elems, tables, cache, maxm =
+ let elems, tables, cache, maxm, flags =
if is_equational_case goalty flags then
- match
- equational_case dbd tables maxm
- (Some callback_for_paramod) cache
- depth fake_proof goalno goalty subst context flags
- with
- | Some elems, tables, cache, maxm ->
- elems, tables, cache, maxm
- | None, tables,cache,maxm ->
- applicative_case dbd tables maxm depth subst fake_proof goalno
- goalty metasenv context cache
+ let elems,tables,cache,maxm1, flags =
+ equational_case tables maxm cache
+ depth fake_proof goalno goalty subst context flags in
+ assert(maxm1 >= maxm);
+ let maxm = maxm1 in
+ let more_elems, tables, cache, maxm1 =
+ if flags.use_only_paramod then
+ [],tables, cache, maxm
+ else
+ applicative_case
+ tables maxm depth subst fake_proof goalno
+ goalty metasenv context cache in
+ assert(maxm1 >= maxm);
+ let maxm = maxm1 in
+ elems@more_elems, tables, cache, maxm, flags
else
- applicative_case dbd tables maxm depth subst fake_proof goalno
- goalty metasenv context cache
+ let elems, tables, cache, maxm =
+ applicative_case tables maxm depth subst fake_proof goalno
+ goalty metasenv context cache in
+ elems, tables, cache, maxm, flags
in
- aux tables maxm cache elems
+ aux flags tables maxm cache elems
| _ -> Fail "??",tables,cache,maxm
in
- aux tables maxm cache elems
+ aux flags tables maxm cache elems
and
- auto_all_solutions dbd tables maxm cache context metasenv gl flags
+ auto_all_solutions maxm tables cache context metasenv gl flags
=
let goals = order_new_goals metasenv [] gl CicPp.ppterm in
let goals = List.map (fun (x,s) -> x,flags.maxdepth,s) goals in
let elems = [metasenv,[],goals] in
let rec aux tables maxm solutions cache elems flags =
- match auto_main dbd tables maxm context flags elems cache with
+ match auto_main tables maxm context flags elems cache with
| Fail s,tables,cache,maxm ->prerr_endline s; solutions,cache,maxm
| Success (metasenv,subst,others),tables,cache,maxm ->
if Unix.gettimeofday () > flags.timeout then
aux tables maxm ((subst,metasenv)::solutions) cache others flags
in
let rc = aux tables maxm [] cache elems flags in
- prerr_endline "fine auto all solutions";
- rc
+ match rc with
+ | [],cache,maxm -> [],cache,maxm
+ | solutions,cache,maxm ->
+ let solutions =
+ HExtlib.filter_map
+ (fun (subst,newmetasenv) ->
+ let opened =
+ ProofEngineHelpers.compare_metasenvs ~oldmetasenv:metasenv ~newmetasenv
+ in
+ if opened = [] then Some subst else None)
+ solutions
+ in
+ solutions,cache,maxm
;;
(* }}} ****************** AUTO ***************)
-let auto_all_solutions dbd cache context metasenv gl flags =
+let auto_all tables cache context metasenv gl flags =
let solutions, cache, _ =
- auto_all_solutions dbd None 0 cache context metasenv gl flags
+ auto_all_solutions 0 tables cache context metasenv gl flags
in
solutions, cache
;;
-let auto dbd cache context metasenv gl flags =
+let auto flags metasenv tables cache context metasenv gl =
let initial_time = Unix.gettimeofday() in
let goals = order_new_goals metasenv [] gl CicPp.ppterm in
let goals = List.map (fun (x,s) -> x,flags.maxdepth,s) goals in
let elems = [metasenv,[],goals] in
- match auto_main dbd None 0 context flags elems cache with
+ match auto_main tables 0 context flags elems cache with
| Success (metasenv,subst,_), tables,cache,_ ->
prerr_endline("TIME:"^string_of_float(Unix.gettimeofday()-.initial_time));
Some (subst,metasenv), cache
Unix.gettimeofday() +. (float_of_int timeout);
AutoTypes.use_paramod = use_paramod;
AutoTypes.use_only_paramod = use_only_paramod;
- AutoTypes.dont_cache_failures = false
+ AutoTypes.dont_cache_failures = false;
}
let applyS_tac ~dbd ~term ~params =
| CicTypeChecker.TypeCheckerFailure msg ->
raise (ProofEngineTypes.Fail msg))
+(* SUPERPOSITION *)
+
+(* Syntax:
+ * auto superposition target = NAME
+ * [table = NAME_LIST] [demod_table = NAME_LIST] [subterms_only]
+ *
+ * - if table is omitted no superposition will be performed
+ * - if demod_table is omitted no demodulation will be prformed
+ * - subterms_only is passed to Indexing.superposition_right
+ *
+ * lists are coded using _ (example: H_H1_H2)
+ *)
+
+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 ")))
+;;
+
+let rec find_in_ctx i name = function
+ | [] -> raise (ProofEngineTypes.Fail (lazy ("Hypothesis not found: " ^ name)))
+ | Some (Cic.Name name', _)::tl when name = name' -> i
+ | _::tl -> find_in_ctx (i+1) name tl
+;;
+
+let rec position_of i x = function
+ | [] -> assert false
+ | j::tl when j <> x -> position_of (i+1) x tl
+ | _ -> i
+;;
+
+let superposition_tac ~target ~table ~subterms_only ~demod_table status =
+ Saturation.reset_refs();
+ let proof,goalno = status in
+ let curi,metasenv,pbo,pty = proof in
+ let metano,context,ty = CicUtil.lookup_meta goalno metasenv in
+ let eq_uri,tty = eq_and_ty_of_goal ty in
+ let env = (metasenv, context, CicUniv.empty_ugraph) in
+ let names = Utils.names_of_context context in
+ let bag = Equality.mk_equality_bag () in
+ let eq_index, equalities, maxm,cache =
+ find_context_equalities 0 bag context proof AutoCache.cache_empty
+ in
+ let eq_what =
+ let what = find_in_ctx 1 target context in
+ List.nth equalities (position_of 0 what eq_index)
+ in
+ let eq_other =
+ if table <> "" then
+ let other =
+ let others = Str.split (Str.regexp "_") table in
+ List.map (fun other -> find_in_ctx 1 other context) others
+ in
+ List.map
+ (fun other -> List.nth equalities (position_of 0 other eq_index))
+ other
+ else
+ []
+ in
+ let index = List.fold_left Indexing.index Indexing.empty eq_other in
+ let maxm, eql =
+ if table = "" then maxm,[eq_what] else
+ Indexing.superposition_right bag
+ ~subterms_only eq_uri maxm env index eq_what
+ in
+ prerr_endline ("Superposition right:");
+ prerr_endline ("\n eq: " ^ Equality.string_of_equality eq_what ~env);
+ prerr_endline ("\n table: ");
+ List.iter (fun e -> prerr_endline (" " ^ Equality.string_of_equality e ~env)) eq_other;
+ prerr_endline ("\n result: ");
+ List.iter (fun e -> prerr_endline (Equality.string_of_equality e ~env)) eql;
+ prerr_endline ("\n result (cut&paste): ");
+ List.iter
+ (fun e ->
+ let t = Equality.term_of_equality eq_uri e in
+ prerr_endline (CicPp.pp t names))
+ eql;
+ prerr_endline ("\n result proofs: ");
+ List.iter (fun e ->
+ prerr_endline (let _,p,_,_,_ = Equality.open_equality e in
+ let s = match p with Equality.Exact _ -> Subst.empty_subst | Equality.Step (s,_) -> s in
+ Subst.ppsubst s ^ "\n" ^
+ CicPp.pp (Equality.build_proof_term bag eq_uri [] 0 p) names)) eql;
+ if demod_table <> "" then
+ begin
+ let eql =
+ if eql = [] then [eq_what] else eql
+ in
+ let demod =
+ let demod = Str.split (Str.regexp "_") demod_table in
+ List.map (fun other -> find_in_ctx 1 other context) demod
+ in
+ let eq_demod =
+ List.map
+ (fun demod -> List.nth equalities (position_of 0 demod eq_index))
+ demod
+ in
+ let table = List.fold_left Indexing.index Indexing.empty eq_demod in
+ let maxm,eql =
+ List.fold_left
+ (fun (maxm,acc) e ->
+ let maxm,eq =
+ Indexing.demodulation_equality bag eq_uri maxm env table e
+ in
+ maxm,eq::acc)
+ (maxm,[]) eql
+ in
+ let eql = List.rev eql in
+ prerr_endline ("\n result [demod]: ");
+ List.iter
+ (fun e -> prerr_endline (Equality.string_of_equality e ~env)) eql;
+ prerr_endline ("\n result [demod] (cut&paste): ");
+ List.iter
+ (fun e ->
+ let t = Equality.term_of_equality eq_uri e in
+ prerr_endline (CicPp.pp t names))
+ eql;
+ end;
+ proof,[goalno]
+;;
+
+
let auto_tac ~(dbd:HMysql.dbd) ~params (proof, goal) =
(* argument parsing *)
let string = string params in
let bool = bool params in
- let use_only_paramod = bool "paramodulation" false in
(* hacks to debug paramod *)
let superposition = bool "superposition" false in
let target = string "target" "" in
match superposition with
| true ->
(* this is the ugly hack to debug paramod *)
- Saturation.superposition_tac
+ superposition_tac
~target ~table ~subterms_only ~demod_table (proof,goal)
| false ->
(* this is the real auto *)
- let _, metasenv, _, _ = proof in
- let _, context, goalty = CicUtil.lookup_meta goal metasenv in
- let cache =
- let cache =
- AutoCache.cache_add_context context metasenv AutoCache.cache_empty
- in
- if use_only_paramod then (* only paramod *)
- cache
- else
- AutoCache.cache_add_library dbd proof [goal] cache
- in
- let oldmetasenv = metasenv in
+ let _,metasenv,_,_ = proof in
+ let _,context,_ = CicUtil.lookup_meta goal metasenv in
let flags = flags_of_params params () in
- match auto dbd cache context metasenv [goal] flags with
- | None,cache ->
- raise (ProofEngineTypes.Fail (lazy "Auto gave up"))
- | Some (subst,metasenv),cache ->
- let proof,metasenv =
+ (* just for testing *)
+ let use_library = not flags.use_only_paramod in
+ let tables,cache,newmeta =
+ init_cache_and_tables dbd use_library (proof, goal) in
+ let tables,cache,newmeta =
+ close_more tables newmeta context (proof, goal) auto_all_solutions cache in
+ let initial_time = Unix.gettimeofday() in
+ let (_,oldmetasenv,_,_) = proof in
+ let elem = metasenv,[],[goal,flags.maxdepth,AutoTypes.P] in
+ match auto_main tables newmeta context flags [elem] cache with
+ | Success (metasenv,subst,_), tables,cache,_ ->
+ prerr_endline("TIME:"^string_of_float(Unix.gettimeofday()-.initial_time));
+ let proof,metasenv =
ProofEngineHelpers.subst_meta_and_metasenv_in_proof
proof goal (CicMetaSubst.apply_subst subst) metasenv
- in
- let opened =
- ProofEngineHelpers.compare_metasenvs ~oldmetasenv
- ~newmetasenv:metasenv
- in
- proof,opened
+ in
+ let opened =
+ ProofEngineHelpers.compare_metasenvs ~oldmetasenv
+ ~newmetasenv:metasenv
+ in
+ proof,opened
+ | Fail s,tables,cache,maxm ->
+ raise (ProofEngineTypes.Fail (lazy "Auto gave up"))
;;
let auto_tac ~dbd ~params = ProofEngineTypes.mk_tactic (auto_tac ~params ~dbd);;
+
+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 ")))
+;;
+
+(* DEMODULATE *)
+let demodulate_tac ~dbd ((proof,goal)(*s initialstatus*)) =
+ let curi,metasenv,pbo,pty = proof in
+ let metano,context,ty = CicUtil.lookup_meta goal metasenv in
+ let irl = CicMkImplicit.identity_relocation_list_for_metavariable context in
+ let initgoal = [], [], ty in
+ let eq_uri = eq_of_goal ty in
+ let (active,passive,bag), cache, maxm =
+ init_cache_and_tables dbd true (proof,goal) in
+ let equalities = (Saturation.list_of_passive passive) in
+ (* we demodulate using both actives passives *)
+ let table =
+ List.fold_left
+ (fun tbl eq -> Indexing.index tbl eq)
+ (snd active) equalities
+ in
+ let changed,(newproof,newmetasenv, newty) =
+ Indexing.demodulation_goal bag
+ (metasenv,context,CicUniv.empty_ugraph) table initgoal
+ in
+ if changed then
+ begin
+ let opengoal = Equality.Exact (Cic.Meta(maxm,irl)) in
+ let proofterm,_ =
+ Equality.build_goal_proof bag
+ eq_uri newproof opengoal ty [] context metasenv
+ 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:(ProofEngineTypes.conclusion_pattern None)) initialstatus*)
+;;
+
+let demodulate_tac ~dbd = ProofEngineTypes.mk_tactic (demodulate_tac ~dbd);;
+
+
+
| ParamodulationFailure of string * active_table * passive_table
| ParamodulationSuccess of new_proof * active_table * passive_table
;;
+
+let list_of_passive (l,s) = l
+;;
+
let make_passive eq_list =
let set =
List.fold_left (fun s e -> EqualitySet.add e s) EqualitySet.empty eq_list
| _ -> 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 goal_equation =
+ Equality.mk_equality bag
+ (0,Equality.Exact (Cic.Implicit None),(eq_ty,left,right,Utils.Eq),menv)
+ in
+ List.map
+ (fun (subst, equality, swapped ) ->
+ let (_,p,(ty,l,r,_),m,id) = Equality.open_equality equality in
+ let cicmenv = Subst.apply_subst_metasenv subst (m @ menv) in
+ let p =
+ if swapped then
+ Equality.symmetric bag eq_ty l id uri m
+ else
+ p
+ in (goalproof, p, id, subst, cicmenv))
+ (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 ->
final_subst, proof, open_goals
;;
-let find_equalities dbd status smart_flag auto cache =
- let proof, goalno = status in
- let _, metasenv,_,_ = proof in
- let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
- let eq_uri = eq_of_goal type_of_goal in
- let env = (metasenv, context, CicUniv.empty_ugraph) in
- let bag = Equality.mk_equality_bag () in
- let eq_indexes, equalities, maxm, cache =
- Equality_retrieval.find_context_equalities 0 bag auto context proof cache
- in
- prerr_endline ">>>>>>>>>> gained from the context >>>>>>>>>>>>";
- List.iter (fun e -> prerr_endline (Equality.string_of_equality e)) equalities;
- prerr_endline ">>>>>>>>>>>>>>>>>>>>>>";
- let lib_eq_uris, library_equalities, maxm, cache =
- Equality_retrieval.find_library_equalities bag
- auto smart_flag dbd context (proof, goalno) (maxm+2)
- cache
- in
- prerr_endline (">>>>>>>>>> gained from the library >>>>>>>>>>>>" ^
- string_of_int maxm);
- List.iter
- (fun (_,e) -> prerr_endline (Equality.string_of_equality e))
- library_equalities;
- prerr_endline ">>>>>>>>>>>>>>>>>>>>>>";
- let equalities = List.map snd library_equalities @ equalities in
- let equalities =
- simplify_equalities bag eq_uri env equalities
+
+(* **************** HERE ENDS THE PARAMODULATION STUFF ******************** *)
+
+(* exported functions *)
+
+let pump_actives context bag maxm active passive saturation_steps max_time =
+ reset_refs();
+ maxmeta := maxm;
+ 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
+ assert (maxm > max ma mp);
+ let eq_uri =
+ match LibraryObjects.eq_URI () with
+ | None -> assert false
+ | Some uri -> uri
in
- prerr_endline ">>>>>>>>>> after simplify >>>>>>>>>>>>";
- List.iter
- (fun e -> prerr_endline (Equality.string_of_equality e)) equalities;
- prerr_endline (">>>>>>>>>>>>>>>>>>>>>>" ^ string_of_int maxm);
- bag, equalities, cache, maxm
+ 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) ->
+ a, p, !maxmeta
+ | ParamodulationSuccess _ ->
+ assert false
;;
-let close_more bag active maxmeta status smart_flag auto cache =
- let proof, goalno = status in
- let _, metasenv,_,_ = proof in
- let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
- let eq_uri = eq_of_goal type_of_goal in
- let env = (metasenv, context, CicUniv.empty_ugraph) in
- let eq_indexes, equalities, maxm, cache =
- Equality_retrieval.find_context_equalities maxmeta bag auto context proof cache
- in
- prerr_endline (">>>>>>> gained from a new context saturation >>>>>>>>>" ^
- string_of_int maxm);
- List.iter
- (fun e -> prerr_endline (Equality.string_of_equality ~env e))
- equalities;
- prerr_endline ">>>>>>>>>>>>>>>>>>>>>>";
- let equalities =
- HExtlib.filter_map
- (fun e -> forward_simplify bag eq_uri env e active)
- equalities
- in
- prerr_endline ">>>>>>>>>> after simplify >>>>>>>>>>>>";
- List.iter
- (fun e -> prerr_endline (Equality.string_of_equality ~env e)) equalities;
- prerr_endline (">>>>>>>>>>>>>>>>>>>>>>" ^ string_of_int maxm);
- bag, equalities, cache, maxm
-
-let saturate
- smart_flag
- dbd ?(full=false) ?(depth=default_depth) ?(width=default_width)
- ?(timeout=600.) auto status =
- let module C = Cic in
- reset_refs ();
- maxdepth := depth;
- maxwidth := width;
-(* CicUnification.unif_ty := false;*)
+let all_subsumed bag maxm status active passive =
+ maxmeta := maxm;
let proof, goalno = status in
let uri, metasenv, meta_proof, term_to_prove = proof in
let _, context, type_of_goal = CicUtil.lookup_meta goalno metasenv in
- let eq_uri = eq_of_goal type_of_goal in
+ let env = metasenv,context,CicUniv.empty_ugraph in
let cleaned_goal = Utils.remove_local_context type_of_goal in
- Utils.set_goal_symbols cleaned_goal; (* DISACTIVATED *)
- let ugraph = CicUniv.empty_ugraph in
- let env = (metasenv, context, ugraph) in
let goal = [], List.filter (fun (i,_,_)->i<>goalno) metasenv, cleaned_goal in
- let bag, equalities, cache, maxm =
- find_equalities dbd status smart_flag auto AutoCache.cache_empty
- in
- let res, time =
- maxmeta := maxm+2;
- let t1 = Unix.gettimeofday () in
- let theorems =
- 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 _ =
- Utils.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)))));
- Utils.debug_print
- (lazy
- (Printf.sprintf "Time to retrieve theorems: %.9f\n" (t2 -. t1)));
- in
- let active = make_empty_active () in
- let passive = make_passive equalities in
- let start = Unix.gettimeofday () in
- let res =
-(*
- let goals = make_goals goal in
- given_clause_fullred dbd env goals theorems passive active
-*)
- let goals = make_goal_set goal in
- let max_iterations = 10000 in
- let max_time = Unix.gettimeofday () +. timeout (* minutes *) in
- given_clause bag
- eq_uri env goals passive active max_iterations max_iterations max_time
- in
- let finish = Unix.gettimeofday () in
- (res, finish -. start)
- 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 (Printf.sprintf "\nTIME NEEDED: %8.2f" time);
- let _,p,gl =
- build_proof bag
- status goalproof newproof subsumption_id subsumption_subst proof_menv
- in
- p,gl
-;;
-(* **************** HERE ENDS THE PARAMODULATION STUFF ******************** *)
+ prerr_endline (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 _,goal = simplify_goal bag env goal table in
+ let (_,_,ty) = goal in
+ prerr_endline (CicPp.ppterm ty);
+ let subsumed = find_all_subsumed bag env (snd table) goal in
+ let subsumed_or_id =
+ match (check_if_goal_is_identity env goal) with
+ None -> subsumed
+ | Some id -> id::subsumed in
+ let res =
+ List.map
+ (fun
+ (goalproof,newproof,subsumption_id,subsumption_subst, proof_menv) ->
+ build_proof bag
+ status goalproof newproof subsumption_id subsumption_subst proof_menv)
+ subsumed_or_id in
+ res, !maxmeta
+
-(* exported version of given_clause *)
let given_clause
bag maxm status active passive goal_steps saturation_steps max_time
=
prerr_endline ">>>>>>>>>>>>>>";
let goals = make_goal_set goal in
match
+(* given_caluse non prende in input maxm ????? *)
given_clause bag eq_uri env goals passive active
goal_steps saturation_steps max_time
with
Some (subst, proof,gl),a,p, !maxmeta
;;
-let demodulate_tac ~dbd ((proof,goal)(*s initialstatus*)) =
- let curi,metasenv,pbo,pty = proof in
- let metano,context,ty = CicUtil.lookup_meta goal metasenv in
- let irl = CicMkImplicit.identity_relocation_list_for_metavariable context in
- let initgoal = [], [], ty in
- let eq_uri = eq_of_goal ty in
- let bag, equalities, cache, maxm =
- find_equalities dbd (proof,goal) false None AutoCache.cache_empty
- in
- let table =
- List.fold_left
- (fun tbl eq -> Indexing.index tbl eq)
- Indexing.empty equalities
- in
- let changed,(newproof,newmetasenv, newty) =
- Indexing.demodulation_goal bag
- (metasenv,context,CicUniv.empty_ugraph) table initgoal
- in
- if changed then
- begin
- let opengoal = Equality.Exact (Cic.Meta(maxm,irl)) in
- let proofterm,_ =
- Equality.build_goal_proof bag
- eq_uri newproof opengoal ty [] context metasenv
- 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:(ProofEngineTypes.conclusion_pattern None)) initialstatus*)
-;;
-
-let demodulate_tac ~dbd = ProofEngineTypes.mk_tactic (demodulate_tac ~dbd);;
-
-let rec find_in_ctx i name = function
- | [] -> raise (ProofEngineTypes.Fail (lazy ("Hypothesis not found: " ^ name)))
- | Some (Cic.Name name', _)::tl when name = name' -> i
- | _::tl -> find_in_ctx (i+1) name tl
-;;
-
-let rec position_of i x = function
- | [] -> assert false
- | j::tl when j <> x -> position_of (i+1) x tl
- | _ -> i
-;;
-
-(* Syntax:
- * auto superposition target = NAME
- * [table = NAME_LIST] [demod_table = NAME_LIST] [subterms_only]
- *
- * - if table is omitted no superposition will be performed
- * - if demod_table is omitted no demodulation will be prformed
- * - subterms_only is passed to Indexing.superposition_right
- *
- * lists are coded using _ (example: H_H1_H2)
- *)
-
-let superposition_tac ~target ~table ~subterms_only ~demod_table status =
- reset_refs();
- let proof,goalno = status in
- let curi,metasenv,pbo,pty = proof in
- let metano,context,ty = CicUtil.lookup_meta goalno metasenv in
- let eq_uri,tty = eq_and_ty_of_goal ty in
- let env = (metasenv, context, CicUniv.empty_ugraph) in
- let names = Utils.names_of_context context in
- let bag = Equality.mk_equality_bag () in
- let eq_index, equalities, maxm,cache =
- Equality_retrieval.find_context_equalities 0 bag None context proof AutoCache.cache_empty
- in
- let eq_what =
- let what = find_in_ctx 1 target context in
- List.nth equalities (position_of 0 what eq_index)
- in
- let eq_other =
- if table <> "" then
- let other =
- let others = Str.split (Str.regexp "_") table in
- List.map (fun other -> find_in_ctx 1 other context) others
- in
- List.map
- (fun other -> List.nth equalities (position_of 0 other eq_index))
- other
- else
- []
- in
- let index = List.fold_left Indexing.index Indexing.empty eq_other in
- let maxm, eql =
- if table = "" then maxm,[eq_what] else
- Indexing.superposition_right bag
- ~subterms_only eq_uri maxm env index eq_what
- in
- prerr_endline ("Superposition right:");
- prerr_endline ("\n eq: " ^ Equality.string_of_equality eq_what ~env);
- prerr_endline ("\n table: ");
- List.iter (fun e -> prerr_endline (" " ^ Equality.string_of_equality e ~env)) eq_other;
- prerr_endline ("\n result: ");
- List.iter (fun e -> prerr_endline (Equality.string_of_equality e ~env)) eql;
- prerr_endline ("\n result (cut&paste): ");
- List.iter
- (fun e ->
- let t = Equality.term_of_equality eq_uri e in
- prerr_endline (CicPp.pp t names))
- eql;
- prerr_endline ("\n result proofs: ");
- List.iter (fun e ->
- prerr_endline (let _,p,_,_,_ = Equality.open_equality e in
- let s = match p with Equality.Exact _ -> Subst.empty_subst | Equality.Step (s,_) -> s in
- Subst.ppsubst s ^ "\n" ^
- CicPp.pp (Equality.build_proof_term bag eq_uri [] 0 p) names)) eql;
- if demod_table <> "" then
- begin
- let eql =
- if eql = [] then [eq_what] else eql
- in
- let demod =
- let demod = Str.split (Str.regexp "_") demod_table in
- List.map (fun other -> find_in_ctx 1 other context) demod
- in
- let eq_demod =
- List.map
- (fun demod -> List.nth equalities (position_of 0 demod eq_index))
- demod
- in
- let table = List.fold_left Indexing.index Indexing.empty eq_demod in
- let maxm,eql =
- List.fold_left
- (fun (maxm,acc) e ->
- let maxm,eq =
- Indexing.demodulation_equality bag eq_uri maxm env table e
- in
- maxm,eq::acc)
- (maxm,[]) eql
- in
- let eql = List.rev eql in
- prerr_endline ("\n result [demod]: ");
- List.iter
- (fun e -> prerr_endline (Equality.string_of_equality e ~env)) eql;
- prerr_endline ("\n result [demod] (cut&paste): ");
- List.iter
- (fun e ->
- let t = Equality.term_of_equality eq_uri e in
- prerr_endline (CicPp.pp t names))
- eql;
- end;
- proof,[goalno]
-;;
-
-let get_stats () = ""
-(*
- <:show<Saturation.>> ^ Indexing.get_stats () ^ Founif.get_stats () ^
- Equality.get_stats ()
-;;
-*)
-
-(* THINGS USED ONLY BY saturate_main.ml *)
-
-let main _ _ _ _ _ = () ;;
-
-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 bag = Equality.mk_equality_bag () in
- let eq_indexes, equalities, maxm,cache =
- Equality_retrieval.find_context_equalities 0 bag None context proof AutoCache.cache_empty 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, cache =
- Equality_retrieval.find_library_equalities bag None
- false dbd context (proof, goal') (maxm+2) cache
- in
- let t2 = Unix.gettimeofday () in
- maxmeta := maxm+2;
- let equalities = (* equalities @ *) library_equalities in
- Utils.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))));
- Utils.debug_print (lazy "RETR: SIMPLYFYING EQUALITIES...");
- let rec simpl e others others_simpl =
- let (u, e) = e in
- let active = (others @ others_simpl) in
- let tbl =
- List.fold_left
- (fun t (_, e) -> Indexing.index t e)
- Indexing.empty active
- in
- let res = forward_simplify bag eq_uri env 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 -> (Utils.Positive, e)) tl in *)
- let res =
- List.rev (simpl (*(Positive,*) hd others [])
- in
- Utils.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
- Utils.debug_print
- (lazy
- (Printf.sprintf "Time to retrieve equalities: %.9f\n" (t2 -. t1)))
-;;
-
-
-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 bag = Equality.mk_equality_bag () in
- let eq_indexes, equalities, maxm, cache =
- Equality_retrieval.find_context_equalities 0 bag None context proof AutoCache.cache_empty in
- let lib_eq_uris, library_equalities, maxm,cache =
- Equality_retrieval.find_library_equalities bag None
- false dbd context (proof, goal') (maxm+2) cache
- 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
- Utils.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
- in
- let env = (metasenv, context, ugraph) in
- (*try*)
- let goal = [], [], goal
- in
- let equalities =
- simplify_equalities bag eq_uri env (equalities@library_equalities)
- in
- let active = make_empty_active () in
- let passive = make_passive equalities in
- Printf.eprintf "\ncontext:\n%s\n" (PP.ppcontext context);
- Printf.eprintf "\nmetasenv:\n%s\n" (Utils.print_metasenv metasenv);
- Printf.eprintf "\nequalities:\n%s\n"
- (String.concat "\n"
- (List.map
- (Equality.string_of_equality ~env) equalities));
- prerr_endline "--------------------------------------------------";
- prerr_endline "GO!";
- start_time := Unix.gettimeofday ();
- if !time_limit < 1. then time_limit := 60.;
- let ra, rp =
- saturate_equations bag 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)
- in
- Printf.eprintf "\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 ->
- Utils.debug_print (lazy ("EXCEPTION: " ^ (Printexc.to_string e)))
-*)
-;;
-let saturate_equations eq_uri env goal accept_fun passive active =
- let bag = Equality.mk_equality_bag () in
- saturate_equations bag eq_uri env goal accept_fun passive active
-;;
-
let add_to_passive eql passives =
add_to_passive passives eql eql
;;
+
+
projects / helm.git / commitdiff