(* ||M|| This file is part of HELM, an Hypertextual, Electronic ||A|| Library of Mathematics, developed at the Computer Science ||T|| Department, University of Bologna, Italy. ||I|| ||T|| HELM is free software; you can redistribute it and/or ||A|| modify it under the terms of the GNU General Public License \ / version 2 or (at your option) any later version. \ / This software is distributed as is, NO WARRANTY. V_______________________________________________________________ *) (* $Id: nCic.ml 9058 2008-10-13 17:42:30Z tassi $ *) module P = Printf module DT = DisambiguateTypes module Ast = NotationPt module NRef = NReference let debug = ref false;; let debug_print s = if !debug then prerr_endline (Lazy.force s);; let cic_name_of_name = function | Ast.Ident (n, None) -> n | _ -> assert false ;; let rec mk_rels howmany from = match howmany with | 0 -> [] | _ -> (NCic.Rel (howmany + from)) :: (mk_rels (howmany-1) from) ;; let refine_term (status: #NCicCoercion.status) metasenv subst context uri ~use_coercions term expty _ ~localization_tbl = assert (uri=None); debug_print (lazy (P.sprintf "TEST_INTERPRETATION: %s" (status#ppterm ~metasenv ~subst ~context term))); try let localise t = try NCicUntrusted.NCicHash.find localization_tbl t with Not_found -> prerr_endline ("NOT LOCALISED" ^ status#ppterm ~metasenv ~subst ~context t); (*assert false*) HExtlib.dummy_floc in let metasenv, subst, term, _ = NCicRefiner.typeof (status#set_coerc_db (if use_coercions then status#coerc_db else NCicCoercion.empty_db)) metasenv subst context term expty ~localise in Disambiguate.Ok (term, metasenv, subst, ()) with | NCicRefiner.Uncertain loc_msg -> debug_print (lazy ("UNCERTAIN: [" ^ snd (Lazy.force loc_msg) ^ "] " ^ status#ppterm ~metasenv ~subst ~context term)) ; Disambiguate.Uncertain loc_msg | NCicRefiner.RefineFailure loc_msg -> debug_print (lazy (P.sprintf "PRUNED:\nterm%s\nmessage:%s" (status#ppterm ~metasenv ~subst ~context term) (snd(Lazy.force loc_msg)))); Disambiguate.Ko loc_msg ;; let refine_obj status metasenv subst _context _uri ~use_coercions obj _ _ugraph ~localization_tbl = (*prerr_endline ((P.sprintf "TEST_INTERPRETATION: %s" (status#ppobj obj)));*) assert (metasenv=[]); assert (subst=[]); let localise t = try NCicUntrusted.NCicHash.find localization_tbl t with Not_found -> (*assert false*)HExtlib.dummy_floc in try let obj = NCicRefiner.typeof_obj (status#set_coerc_db (if use_coercions then status#coerc_db else NCicCoercion.empty_db)) obj ~localise in Disambiguate.Ok (obj, [], [], ()) with | NCicRefiner.Uncertain loc_msg -> debug_print (lazy ("UNCERTAIN: [" ^ snd (Lazy.force loc_msg) ^ "] " ^ status#ppobj obj)) ; Disambiguate.Uncertain loc_msg | NCicRefiner.RefineFailure loc_msg -> debug_print (lazy (P.sprintf "PRUNED:\nobj: %s\nmessage: %s" (status#ppobj obj) (snd(Lazy.force loc_msg)))); Disambiguate.Ko loc_msg ;; (* TODO move it to Cic *) let find_in_context name context = let rec aux acc = function | [] -> raise Not_found | hd :: _ when hd = name -> acc | _ :: tl -> aux (acc + 1) tl in aux 1 context let interpretate_term_and_interpretate_term_option (status: #NCic.status) ~create_dummy_ids ~obj_context ~mk_choice ~env ~uri ~is_path ~localization_tbl = (* create_dummy_ids shouldbe used only for interpretating patterns *) assert (uri = None); let rec aux ~localize loc context = function | NotationPt.AttributedTerm (`Loc loc, term) -> let res = aux ~localize loc context term in if localize then NCicUntrusted.NCicHash.add localization_tbl res loc; res | NotationPt.AttributedTerm (_, term) -> aux ~localize loc context term | NotationPt.Appl (NotationPt.AttributedTerm (att, inner)::args)-> aux ~localize loc context (NotationPt.AttributedTerm (att,NotationPt.Appl (inner :: args))) | NotationPt.Appl (NotationPt.Appl inner :: args) -> aux ~localize loc context (NotationPt.Appl (inner @ args)) | NotationPt.Appl (NotationPt.Symbol (symb, i) :: args) -> let cic_args = List.map (aux ~localize loc context) args in Disambiguate.resolve ~mk_choice ~env (DT.Symbol (symb, i)) (`Args cic_args) | NotationPt.Appl terms -> NCic.Appl (List.map (aux ~localize loc context) terms) | NotationPt.Binder (binder_kind, (var, typ), body) -> let cic_type = aux_option ~localize loc context `Type typ in let cic_name = cic_name_of_name var in let cic_body = aux ~localize loc (cic_name :: context) body in (match binder_kind with | `Lambda -> NCic.Lambda (cic_name, cic_type, cic_body) | `Pi | `Forall -> NCic.Prod (cic_name, cic_type, cic_body) | `Exists -> Disambiguate.resolve ~env ~mk_choice (DT.Symbol ("exists", 0)) (`Args [ cic_type; NCic.Lambda (cic_name, cic_type, cic_body) ])) | NotationPt.Case (term, indty_ident, outtype, branches) -> let cic_term = aux ~localize loc context term in let cic_outtype = aux_option ~localize loc context `Term outtype in let do_branch ((_, _, args), term) = let rec do_branch' context = function | [] -> aux ~localize loc context term | (name, typ) :: tl -> let cic_name = cic_name_of_name name in let cic_body = do_branch' (cic_name :: context) tl in let typ = match typ with | None -> NCic.Implicit `Type | Some typ -> aux ~localize loc context typ in NCic.Lambda (cic_name, typ, cic_body) in do_branch' context args in if create_dummy_ids then let branches = List.map (function Ast.Wildcard,term -> ("wildcard",None,[]), term | Ast.Pattern _,_ -> raise (DisambiguateTypes.Invalid_choice (lazy (loc, "Syntax error: the left hand side of a "^ "branch pattern must be \"_\""))) ) branches in let indtype_ref = let uri = NUri.uri_of_string "cic:/matita/dummy/indty.ind" in NRef.reference_of_spec uri (NRef.Ind (true,1,1)) in NCic.Match (indtype_ref, cic_outtype, cic_term, (List.map do_branch branches)) else let indtype_ref = match indty_ident with | Some (indty_ident, _) -> (match Disambiguate.resolve ~env ~mk_choice (DT.Id indty_ident) (`Args []) with | NCic.Const (NRef.Ref (_,NRef.Ind _) as r) -> r | NCic.Implicit _ -> raise (Disambiguate.Try_again (lazy "The type of the term to be matched is still unknown")) | t -> raise (DisambiguateTypes.Invalid_choice (lazy (loc,"The type of the term to be matched "^ "is not (co)inductive: " ^ status#ppterm ~metasenv:[] ~subst:[] ~context:[] t)))) | None -> let rec fst_constructor = function (Ast.Pattern (head, _, _), _) :: _ -> head | (Ast.Wildcard, _) :: tl -> fst_constructor tl | [] -> raise (DT.Invalid_choice (lazy (loc,"The type "^ "of the term to be matched cannot be determined "^ "because it is an inductive type without constructors "^ "or because all patterns use wildcards"))) in (* DisambiguateTypes.Environment.iter (fun k v -> prerr_endline (DisambiguateTypes.string_of_domain_item k ^ " => " ^ description_of_alias v)) env; *) (match Disambiguate.resolve ~env ~mk_choice (DT.Id (fst_constructor branches)) (`Args []) with | NCic.Const (NRef.Ref (_,NRef.Con _) as r) -> let b,_,_,_,_= NCicEnvironment.get_checked_indtys status r in NRef.mk_indty b r | NCic.Implicit _ -> raise (Disambiguate.Try_again (lazy "The type of the term to be matched is still unknown")) | t -> raise (DisambiguateTypes.Invalid_choice (lazy (loc, "The type of the term to be matched is not (co)inductive: " ^ status#ppterm ~metasenv:[] ~subst:[] ~context:[] t)))) in let _,leftsno,itl,_,indtyp_no = NCicEnvironment.get_checked_indtys status indtype_ref in let _,_,_,cl = try List.nth itl indtyp_no with _ -> assert false in let rec count_prod t = match NCicReduction.whd status ~subst:[] [] t with NCic.Prod (_, _, t) -> 1 + (count_prod t) | _ -> 0 in let rec sort branches cl = match cl with [] -> let rec analyze unused unrecognized useless = function [] -> if unrecognized != [] then raise (DisambiguateTypes.Invalid_choice (lazy (loc,"Unrecognized constructors: " ^ String.concat " " unrecognized))) else if useless > 0 then raise (DisambiguateTypes.Invalid_choice (lazy (loc,"The last " ^ string_of_int useless ^ "case" ^ if useless > 1 then "s are" else " is" ^ " unused"))) else [] | (Ast.Wildcard,_)::tl when not unused -> analyze true unrecognized useless tl | (Ast.Pattern (head,_,_),_)::tl when not unused -> analyze unused (head::unrecognized) useless tl | _::tl -> analyze unused unrecognized (useless + 1) tl in analyze false [] 0 branches | (_,name,ty)::cltl -> let rec find_and_remove = function [] -> raise (DisambiguateTypes.Invalid_choice (lazy (loc, "Missing case: " ^ name))) | ((Ast.Wildcard, _) as branch :: _) as branches -> branch, branches | (Ast.Pattern (name',_,_),_) as branch :: tl when name = name' -> branch,tl | branch::tl -> let found,rest = find_and_remove tl in found, branch::rest in let branch,tl = find_and_remove branches in match branch with Ast.Pattern (name,y,args),term -> if List.length args = count_prod ty - leftsno then ((name,y,args),term)::sort tl cltl else raise (DisambiguateTypes.Invalid_choice (lazy (loc,"Wrong number of arguments for " ^ name))) | Ast.Wildcard,term -> let rec mk_lambdas = function 0 -> term | n -> NotationPt.Binder (`Lambda, (NotationPt.Ident ("_", None), None), mk_lambdas (n - 1)) in (("wildcard",None,[]), mk_lambdas (count_prod ty - leftsno)) :: sort tl cltl in let branches = sort branches cl in NCic.Match (indtype_ref, cic_outtype, cic_term, (List.map do_branch branches)) | NotationPt.Cast (t1, t2) -> let cic_t1 = aux ~localize loc context t1 in let cic_t2 = aux ~localize loc context t2 in NCic.LetIn ("_",cic_t2,cic_t1, NCic.Rel 1) | NotationPt.LetIn ((name, typ), def, body) -> let cic_def = aux ~localize loc context def in let cic_name = cic_name_of_name name in let cic_typ = match typ with | None -> NCic.Implicit `Type | Some t -> aux ~localize loc context t in let cic_body = aux ~localize loc (cic_name :: context) body in NCic.LetIn (cic_name, cic_typ, cic_def, cic_body) | NotationPt.Ident _ | NotationPt.Uri _ | NotationPt.NRef _ when is_path -> raise Disambiguate.PathNotWellFormed | NotationPt.Ident (name, subst) -> assert (subst = None); (try NCic.Rel (find_in_context name context) with Not_found -> try NCic.Const (List.assoc name obj_context) with Not_found -> Disambiguate.resolve ~env ~mk_choice (DT.Id name) (`Args [])) | NotationPt.Uri (uri, subst) -> assert (subst = None); (try NCic.Const (NRef.reference_of_string uri) with NRef.IllFormedReference _ -> NotationPt.fail loc "Ill formed reference") | NotationPt.NRef nref -> NCic.Const nref | NotationPt.NCic t -> t | NotationPt.Implicit `Vector -> NCic.Implicit `Vector | NotationPt.Implicit `JustOne -> NCic.Implicit `Term | NotationPt.Implicit (`Tagged s) -> NCic.Implicit (`Tagged s) | NotationPt.UserInput -> NCic.Implicit `Hole | NotationPt.Num (num, i) -> Disambiguate.resolve ~env ~mk_choice (DT.Num i) (`Num_arg num) | NotationPt.Meta (index, subst) -> let cic_subst = List.map (function None -> assert false| Some t -> aux ~localize loc context t) subst in NCic.Meta (index, (0, NCic.Ctx cic_subst)) | NotationPt.Sort `Prop -> NCic.Sort NCic.Prop | NotationPt.Sort `Set -> NCic.Sort (NCic.Type [`Type,NUri.uri_of_string "cic:/matita/pts/Type.univ"]) | NotationPt.Sort (`NType s) -> NCic.Sort (NCic.Type [`Type,NUri.uri_of_string ("cic:/matita/pts/Type" ^ s ^ ".univ")]) | NotationPt.Sort (`NCProp s) -> NCic.Sort (NCic.Type [`CProp,NUri.uri_of_string ("cic:/matita/pts/Type" ^ s ^ ".univ")]) | NotationPt.Symbol (symbol, instance) -> Disambiguate.resolve ~env ~mk_choice (DT.Symbol (symbol, instance)) (`Args []) | NotationPt.Variable _ | NotationPt.Magic _ | NotationPt.Layout _ | NotationPt.Literal _ -> assert false (* god bless Bologna *) and aux_option ~localize loc context annotation = function | None -> NCic.Implicit annotation | Some (NotationPt.AttributedTerm (`Loc loc, term)) -> let res = aux_option ~localize loc context annotation (Some term) in if localize then NCicUntrusted.NCicHash.add localization_tbl res loc; res | Some (NotationPt.AttributedTerm (_, term)) -> aux_option ~localize loc context annotation (Some term) | Some NotationPt.Implicit `JustOne -> NCic.Implicit annotation | Some NotationPt.Implicit `Vector -> NCic.Implicit `Vector | Some term -> aux ~localize loc context term in (fun ~context -> aux ~localize:true HExtlib.dummy_floc context), (fun ~context -> aux_option ~localize:true HExtlib.dummy_floc context) ;; let interpretate_term status ?(create_dummy_ids=false) ~context ~env ~uri ~is_path ast ~obj_context ~localization_tbl ~mk_choice = let context = List.map fst context in fst (interpretate_term_and_interpretate_term_option status ~obj_context ~mk_choice ~create_dummy_ids ~env ~uri ~is_path ~localization_tbl) ~context ast ;; let interpretate_term_option status ?(create_dummy_ids=false) ~context ~env ~uri ~is_path ~localization_tbl ~mk_choice ~obj_context = let context = List.map fst context in snd (interpretate_term_and_interpretate_term_option status ~obj_context ~mk_choice ~create_dummy_ids ~env ~uri ~is_path ~localization_tbl) ~context ;; let disambiguate_path status path = let localization_tbl = NCicUntrusted.NCicHash.create 23 in fst (interpretate_term_and_interpretate_term_option status ~obj_context:[] ~mk_choice:(fun _ -> assert false) ~create_dummy_ids:true ~env:DisambiguateTypes.Environment.empty ~uri:None ~is_path:true ~localization_tbl) ~context:[] path ;; let ncic_name_of_ident = function | Ast.Ident (name, None) -> name | _ -> assert false ;; let interpretate_obj status (* ?(create_dummy_ids=false) *) ~context ~env ~uri ~is_path obj ~localization_tbl ~mk_choice = assert (context = []); assert (is_path = false); let interpretate_term ~obj_context = interpretate_term ~mk_choice ~localization_tbl ~obj_context in let interpretate_term_option ~obj_context = interpretate_term_option ~mk_choice ~localization_tbl ~obj_context in let uri = match uri with | None -> assert false | Some u -> u in match obj with | NotationPt.Theorem (name, ty, bo, attrs) -> let _, flavour, _ = attrs in let ty' = interpretate_term status ~obj_context:[] ~context:[] ~env ~uri:None ~is_path:false ty in let height = (* XXX calculate *) 0 in uri, height, [], [], (match bo,flavour with | None,`Axiom -> NCic.Constant ([],name,None,ty',attrs) | Some _,`Axiom -> assert false | None,_ -> NCic.Constant ([],name,Some (NCic.Implicit `Term),ty',attrs) | Some bo,_ -> let bo = interpretate_term status ~obj_context:[] ~context:[] ~env ~uri:None ~is_path:false bo in NCic.Constant ([],name,Some bo,ty',attrs)) | NotationPt.Inductive (params,tyl,source) -> let context,params = let context,res = List.fold_left (fun (context,res) (name,t) -> let t = match t with None -> NotationPt.Implicit `JustOne | Some t -> t in let name = cic_name_of_name name in let t = interpretate_term status ~obj_context:[] ~context ~env ~uri:None ~is_path:false t in (name,NCic.Decl t)::context,(name,t)::res ) ([],[]) params in context,List.rev res in let add_params = List.fold_right (fun (name,ty) t -> NCic.Prod (name,ty,t)) params in let leftno = List.length params in let _,inductive,_,_ = try List.hd tyl with Failure _ -> assert false in let obj_context = snd ( List.fold_left (fun (i,res) (name,_,_,_) -> let nref = NRef.reference_of_spec uri (NRef.Ind (inductive,i,leftno)) in i+1,(name,nref)::res) (0,[]) tyl) in let tyl = List.map (fun (name,_,ty,cl) -> let ty' = add_params (interpretate_term status ~obj_context:[] ~context ~env ~uri:None ~is_path:false ty) in let cl' = List.map (fun (name,ty) -> let ty' = add_params (interpretate_term status ~obj_context ~context ~env ~uri:None ~is_path:false ty) in let relevance = [] in relevance,name,ty' ) cl in let relevance = [] in relevance,name,ty',cl' ) tyl in let height = (* XXX calculate *) 0 in let attrs = source, `Regular in uri, height, [], [], NCic.Inductive (inductive,leftno,tyl,attrs) | NotationPt.Record (params,name,ty,fields,source) -> let context,params = let context,res = List.fold_left (fun (context,res) (name,t) -> let t = match t with None -> NotationPt.Implicit `JustOne | Some t -> t in let name = cic_name_of_name name in let t = interpretate_term status ~obj_context:[] ~context ~env ~uri:None ~is_path:false t in (name,NCic.Decl t)::context,(name,t)::res ) ([],[]) params in context,List.rev res in let add_params = List.fold_right (fun (name,ty) t -> NCic.Prod (name,ty,t)) params in let leftno = List.length params in let ty' = add_params (interpretate_term status ~obj_context:[] ~context ~env ~uri:None ~is_path:false ty) in let nref = NRef.reference_of_spec uri (NRef.Ind (true,0,leftno)) in let obj_context = [name,nref] in let fields' = snd ( List.fold_left (fun (context,res) (name,ty,_coercion,_arity) -> let ty = interpretate_term status ~obj_context ~context ~env ~uri:None ~is_path:false ty in let context' = (name,NCic.Decl ty)::context in context',(name,ty)::res ) (context,[]) fields) in let concl = let mutind = NCic.Const nref in if params = [] then mutind else NCic.Appl (mutind::mk_rels (List.length params) (List.length fields)) in let con = List.fold_left (fun t (name,ty) -> NCic.Prod (name,ty,t)) concl fields' in let con' = add_params con in let relevance = [] in let tyl = [relevance,name,ty',[relevance,"mk_" ^ name,con']] in let field_names = List.map (fun (x,_,y,z) -> x,y,z) fields in let height = (* XXX calculate *) 0 in let attrs = source, `Record field_names in uri, height, [], [], NCic.Inductive (true,leftno,tyl,attrs) | NotationPt.LetRec (kind, defs, attrs) -> let inductive = kind = `Inductive in let _,obj_context = List.fold_left (fun (i,acc) (_,(name,_),_,k) -> (i+1, (ncic_name_of_ident name, NRef.reference_of_spec uri (if inductive then NRef.Fix (i,k,0) else NRef.CoFix i)) :: acc)) (0,[]) defs in let inductiveFuns = List.map (fun (params, (name, typ), body, decr_idx) -> let add_binders kind t = List.fold_right (fun var t -> NotationPt.Binder (kind, var, t)) params t in let cic_body = interpretate_term status ~obj_context ~context ~env ~uri:None ~is_path:false (add_binders `Lambda body) in let cic_type = interpretate_term_option status ~obj_context:[] ~context ~env ~uri:None ~is_path:false `Type (HExtlib.map_option (add_binders `Pi) typ) in ([],ncic_name_of_ident name, decr_idx, cic_type, cic_body)) defs in let height = (* XXX calculate *) 0 in uri, height, [], [], NCic.Fixpoint (inductive,inductiveFuns,attrs) ;; let disambiguate_term (status: #NCicCoercion.status) ~context ~metasenv ~subst ~expty ~mk_implicit ~description_of_alias ~fix_instance ~mk_choice ~aliases ~universe ~lookup_in_library (text,prefix_len,term) = let mk_localization_tbl x = NCicUntrusted.NCicHash.create x in let res,b = MultiPassDisambiguator.disambiguate_thing ~freshen_thing:NotationUtil.freshen_term ~context ~metasenv ~initial_ugraph:() ~aliases ~mk_implicit ~description_of_alias ~fix_instance ~string_context_of_context:(List.map (fun (x,_) -> Some x)) ~universe ~uri:None ~pp_thing:(NotationPp.pp_term status) ~passes:(MultiPassDisambiguator.passes ()) ~lookup_in_library ~domain_of_thing:Disambiguate.domain_of_term ~interpretate_thing:(interpretate_term status ~obj_context:[] ~mk_choice ?create_dummy_ids:None) ~refine_thing:(refine_term status) (text,prefix_len,term) ~mk_localization_tbl ~expty ~subst in List.map (function (a,b,c,d,_) -> a,b,c,d) res, b ;; let disambiguate_obj (status: #NCicCoercion.status) ~mk_implicit ~description_of_alias ~fix_instance ~mk_choice ~aliases ~universe ~lookup_in_library ~uri (text,prefix_len,obj) = let mk_localization_tbl x = NCicUntrusted.NCicHash.create x in let res,b = MultiPassDisambiguator.disambiguate_thing ~freshen_thing:NotationUtil.freshen_obj ~context:[] ~metasenv:[] ~subst:[] ~initial_ugraph:() ~aliases ~mk_implicit ~description_of_alias ~fix_instance ~string_context_of_context:(List.map (fun (x,_) -> Some x)) ~universe ~uri:(Some uri) ~pp_thing:(NotationPp.pp_obj (NotationPp.pp_term status)) ~passes:(MultiPassDisambiguator.passes ()) ~lookup_in_library ~domain_of_thing:Disambiguate.domain_of_obj ~interpretate_thing:(interpretate_obj status ~mk_choice) ~refine_thing:(refine_obj status) (text,prefix_len,obj) ~mk_localization_tbl ~expty:`XTNone in List.map (function (a,b,c,d,_) -> a,b,c,d) res, b ;; (* let _ = let mk_type n = if n = 0 then [false, NUri.uri_of_string ("cic:/matita/pts/Type.univ")] else [false, NUri.uri_of_string ("cic:/matita/pts/Type"^string_of_int n^".univ")] in let mk_cprop n = if n = 0 then [false, NUri.uri_of_string ("cic:/matita/pts/CProp.univ")] else [false, NUri.uri_of_string ("cic:/matita/pts/CProp"^string_of_int n^".univ")] in NCicEnvironment.add_constraint true (mk_type 0) (mk_type 1); NCicEnvironment.add_constraint true (mk_cprop 0) (mk_cprop 1); NCicEnvironment.add_constraint true (mk_cprop 0) (mk_type 1); NCicEnvironment.add_constraint true (mk_type 0) (mk_cprop 1); NCicEnvironment.add_constraint false (mk_cprop 0) (mk_type 0); NCicEnvironment.add_constraint false (mk_type 0) (mk_cprop 0); NCicEnvironment.add_constraint true (mk_type 1) (mk_type 2); NCicEnvironment.add_constraint true (mk_cprop 1) (mk_cprop 2); NCicEnvironment.add_constraint true (mk_cprop 1) (mk_type 2); NCicEnvironment.add_constraint true (mk_type 1) (mk_cprop 2); NCicEnvironment.add_constraint false (mk_cprop 1) (mk_type 1); NCicEnvironment.add_constraint false (mk_type 1) (mk_cprop 1); NCicEnvironment.add_constraint true (mk_type 2) (mk_type 3); NCicEnvironment.add_constraint true (mk_cprop 2) (mk_cprop 3); NCicEnvironment.add_constraint true (mk_cprop 2) (mk_type 3); NCicEnvironment.add_constraint true (mk_type 2) (mk_cprop 3); NCicEnvironment.add_constraint false (mk_cprop 2) (mk_type 2); NCicEnvironment.add_constraint false (mk_type 2) (mk_cprop 2); NCicEnvironment.add_constraint false (mk_cprop 3) (mk_type 3); NCicEnvironment.add_constraint false (mk_type 3) (mk_cprop 3); ;; *)