2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
12 (* $Id: nCic.ml 9058 2008-10-13 17:42:30Z tassi $ *)
16 open DisambiguateTypes
18 module Ast = NotationPt
19 module NRef = NReference
21 let debug_print s = prerr_endline (Lazy.force s);;
22 let debug_print _ = ();;
24 let cic_name_of_name = function
25 | Ast.Ident (n, None) -> n
29 let rec mk_rels howmany from =
32 | _ -> (NCic.Rel (howmany + from)) :: (mk_rels (howmany-1) from)
35 let refine_term (status: #NCicCoercion.status) metasenv subst context uri ~use_coercions term expty _
39 debug_print (lazy (sprintf "TEST_INTERPRETATION: %s"
40 (status#ppterm ~metasenv ~subst ~context term)));
43 try NCicUntrusted.NCicHash.find localization_tbl t
45 prerr_endline ("NOT LOCALISED" ^ status#ppterm ~metasenv ~subst ~context t);
46 (*assert false*) HExtlib.dummy_floc
48 let metasenv, subst, term, _ =
51 (if use_coercions then status#coerc_db else NCicCoercion.empty_db))
52 metasenv subst context term expty ~localise
54 Disambiguate.Ok (term, metasenv, subst, ())
56 | NCicRefiner.Uncertain loc_msg ->
57 debug_print (lazy ("UNCERTAIN: [" ^ snd (Lazy.force loc_msg) ^ "] " ^
58 status#ppterm ~metasenv ~subst ~context term)) ;
59 Disambiguate.Uncertain loc_msg
60 | NCicRefiner.RefineFailure loc_msg ->
61 debug_print (lazy (sprintf "PRUNED:\nterm%s\nmessage:%s"
62 (status#ppterm ~metasenv ~subst ~context term) (snd(Lazy.force loc_msg))));
63 Disambiguate.Ko loc_msg
66 let refine_obj status metasenv subst _context _uri ~use_coercions obj _ _ugraph
72 try NCicUntrusted.NCicHash.find localization_tbl t
74 (*assert false*)HExtlib.dummy_floc
78 NCicRefiner.typeof_obj
80 (if use_coercions then status#coerc_db
81 else NCicCoercion.empty_db))
84 Disambiguate.Ok (obj, [], [], ())
86 | NCicRefiner.Uncertain loc_msg ->
87 debug_print (lazy ("UNCERTAIN: [" ^ snd (Lazy.force loc_msg) ^ "] " ^
89 Disambiguate.Uncertain loc_msg
90 | NCicRefiner.RefineFailure loc_msg ->
91 debug_print (lazy (sprintf "PRUNED:\nobj: %s\nmessage: %s"
92 (status#ppobj obj) (snd(Lazy.force loc_msg))));
93 Disambiguate.Ko loc_msg
97 (* TODO move it to Cic *)
98 let find_in_context name context =
99 let rec aux acc = function
100 | [] -> raise Not_found
101 | hd :: _ when hd = name -> acc
102 | _ :: tl -> aux (acc + 1) tl
106 let interpretate_term_and_interpretate_term_option (status: #NCic.status)
107 ?(create_dummy_ids=false) ~obj_context ~mk_choice ~env ~uri ~is_path
110 (* create_dummy_ids shouldbe used only for interpretating patterns *)
113 let rec aux ~localize loc context = function
114 | NotationPt.AttributedTerm (`Loc loc, term) ->
115 let res = aux ~localize loc context term in
117 NCicUntrusted.NCicHash.add localization_tbl res loc;
119 | NotationPt.AttributedTerm (_, term) -> aux ~localize loc context term
121 (NotationPt.AttributedTerm (att, inner)::args)->
122 aux ~localize loc context
123 (NotationPt.AttributedTerm (att,NotationPt.Appl (inner :: args)))
124 | NotationPt.Appl (NotationPt.Appl inner :: args) ->
125 aux ~localize loc context (NotationPt.Appl (inner @ args))
126 | NotationPt.Appl (NotationPt.Symbol (symb, i) :: args) ->
127 let cic_args = List.map (aux ~localize loc context) args in
128 Disambiguate.resolve ~mk_choice ~env (Symbol (symb, i)) (`Args cic_args)
129 | NotationPt.Appl terms ->
130 NCic.Appl (List.map (aux ~localize loc context) terms)
131 | NotationPt.Binder (binder_kind, (var, typ), body) ->
132 let cic_type = aux_option ~localize loc context `Type typ in
133 let cic_name = cic_name_of_name var in
134 let cic_body = aux ~localize loc (cic_name :: context) body in
135 (match binder_kind with
136 | `Lambda -> NCic.Lambda (cic_name, cic_type, cic_body)
138 | `Forall -> NCic.Prod (cic_name, cic_type, cic_body)
140 Disambiguate.resolve ~env ~mk_choice (Symbol ("exists", 0))
141 (`Args [ cic_type; NCic.Lambda (cic_name, cic_type, cic_body) ]))
142 | NotationPt.Case (term, indty_ident, outtype, branches) ->
143 let cic_term = aux ~localize loc context term in
144 let cic_outtype = aux_option ~localize loc context `Term outtype in
145 let do_branch ((_, _, args), term) =
146 let rec do_branch' context = function
147 | [] -> aux ~localize loc context term
148 | (name, typ) :: tl ->
149 let cic_name = cic_name_of_name name in
150 let cic_body = do_branch' (cic_name :: context) tl in
153 | None -> NCic.Implicit `Type
154 | Some typ -> aux ~localize loc context typ
156 NCic.Lambda (cic_name, typ, cic_body)
158 do_branch' context args
160 if create_dummy_ids then
164 Ast.Wildcard,term -> ("wildcard",None,[]), term
166 raise (DisambiguateTypes.Invalid_choice
167 (lazy (loc, "Syntax error: the left hand side of a "^
168 "branch pattern must be \"_\"")))
171 NReference.reference_of_string "cic:/fake_indty.ind(0,0,0)"
173 NCic.Match (indtype_ref, cic_outtype, cic_term,
174 (List.map do_branch branches))
177 match indty_ident with
178 | Some (indty_ident, _) ->
179 (match Disambiguate.resolve ~env ~mk_choice
180 (Id indty_ident) (`Args []) with
181 | NCic.Const (NReference.Ref (_,NReference.Ind _) as r) -> r
183 raise (Disambiguate.Try_again
184 (lazy "The type of the term to be matched is still unknown"))
186 raise (DisambiguateTypes.Invalid_choice
187 (lazy (loc,"The type of the term to be matched "^
188 "is not (co)inductive: " ^ status#ppterm
189 ~metasenv:[] ~subst:[] ~context:[] t))))
191 let rec fst_constructor =
193 (Ast.Pattern (head, _, _), _) :: _ -> head
194 | (Ast.Wildcard, _) :: tl -> fst_constructor tl
195 | [] -> raise (Invalid_choice (lazy (loc,"The type "^
196 "of the term to be matched cannot be determined "^
197 "because it is an inductive type without constructors "^
198 "or because all patterns use wildcards")))
201 DisambiguateTypes.Environment.iter
204 (DisambiguateTypes.string_of_domain_item k ^ " => " ^
205 description_of_alias v)) env;
207 (match Disambiguate.resolve ~env ~mk_choice
208 (Id (fst_constructor branches)) (`Args []) with
209 | NCic.Const (NReference.Ref (_,NReference.Con _) as r) ->
210 let b,_,_,_,_= NCicEnvironment.get_checked_indtys status r in
211 NReference.mk_indty b r
213 raise (Disambiguate.Try_again
214 (lazy "The type of the term to be matched is still unknown"))
216 raise (DisambiguateTypes.Invalid_choice
218 "The type of the term to be matched is not (co)inductive: "
219 ^ status#ppterm ~metasenv:[] ~subst:[] ~context:[] t))))
221 let _,leftsno,itl,_,indtyp_no =
222 NCicEnvironment.get_checked_indtys status indtype_ref in
225 List.nth itl indtyp_no
226 with _ -> assert false in
227 let rec count_prod t =
228 match NCicReduction.whd status ~subst:[] [] t with
229 NCic.Prod (_, _, t) -> 1 + (count_prod t)
232 let rec sort branches cl =
235 let rec analyze unused unrecognized useless =
238 if unrecognized != [] then
239 raise (DisambiguateTypes.Invalid_choice
241 (loc,"Unrecognized constructors: " ^
242 String.concat " " unrecognized)))
243 else if useless > 0 then
244 raise (DisambiguateTypes.Invalid_choice
246 (loc,"The last " ^ string_of_int useless ^
247 "case" ^ if useless > 1 then "s are" else " is" ^
251 | (Ast.Wildcard,_)::tl when not unused ->
252 analyze true unrecognized useless tl
253 | (Ast.Pattern (head,_,_),_)::tl when not unused ->
254 analyze unused (head::unrecognized) useless tl
255 | _::tl -> analyze unused unrecognized (useless + 1) tl
257 analyze false [] 0 branches
258 | (_,name,ty)::cltl ->
259 let rec find_and_remove =
263 (DisambiguateTypes.Invalid_choice
264 (lazy (loc, "Missing case: " ^ name)))
265 | ((Ast.Wildcard, _) as branch :: _) as branches ->
267 | (Ast.Pattern (name',_,_),_) as branch :: tl
271 let found,rest = find_and_remove tl in
274 let branch,tl = find_and_remove branches in
276 Ast.Pattern (name,y,args),term ->
277 if List.length args = count_prod ty - leftsno then
278 ((name,y,args),term)::sort tl cltl
281 (DisambiguateTypes.Invalid_choice
282 (lazy (loc,"Wrong number of arguments for " ^ name)))
283 | Ast.Wildcard,term ->
289 (`Lambda, (NotationPt.Ident ("_", None), None),
292 (("wildcard",None,[]),
293 mk_lambdas (count_prod ty - leftsno)) :: sort tl cltl
295 let branches = sort branches cl in
296 NCic.Match (indtype_ref, cic_outtype, cic_term,
297 (List.map do_branch branches))
298 | NotationPt.Cast (t1, t2) ->
299 let cic_t1 = aux ~localize loc context t1 in
300 let cic_t2 = aux ~localize loc context t2 in
301 NCic.LetIn ("_",cic_t2,cic_t1, NCic.Rel 1)
302 | NotationPt.LetIn ((name, typ), def, body) ->
303 let cic_def = aux ~localize loc context def in
304 let cic_name = cic_name_of_name name in
307 | None -> NCic.Implicit `Type
308 | Some t -> aux ~localize loc context t
310 let cic_body = aux ~localize loc (cic_name :: context) body in
311 NCic.LetIn (cic_name, cic_typ, cic_def, cic_body)
312 | NotationPt.LetRec (_kind, _defs, _body) -> NCic.Implicit `Term
315 | NotationPt.NRef _ when is_path -> raise Disambiguate.PathNotWellFormed
316 | NotationPt.Ident (name, subst) ->
317 assert (subst = None);
319 NCic.Rel (find_in_context name context)
321 try NCic.Const (List.assoc name obj_context)
323 Disambiguate.resolve ~env ~mk_choice (Id name) (`Args []))
324 | NotationPt.Uri (uri, subst) ->
325 assert (subst = None);
327 NCic.Const (NReference.reference_of_string uri)
328 with NRef.IllFormedReference _ ->
329 NotationPt.fail loc "Ill formed reference")
330 | NotationPt.NRef nref -> NCic.Const nref
331 | NotationPt.NCic t -> t
332 | NotationPt.Implicit `Vector -> NCic.Implicit `Vector
333 | NotationPt.Implicit `JustOne -> NCic.Implicit `Term
334 | NotationPt.Implicit (`Tagged s) -> NCic.Implicit (`Tagged s)
335 | NotationPt.UserInput -> NCic.Implicit `Hole
336 | NotationPt.Num (num, i) ->
337 Disambiguate.resolve ~env ~mk_choice (Num i) (`Num_arg num)
338 | NotationPt.Meta (index, subst) ->
341 (function None -> assert false| Some t -> aux ~localize loc context t)
344 NCic.Meta (index, (0, NCic.Ctx cic_subst))
345 | NotationPt.Sort `Prop -> NCic.Sort NCic.Prop
346 | NotationPt.Sort `Set -> NCic.Sort (NCic.Type
347 [`Type,NUri.uri_of_string "cic:/matita/pts/Type.univ"])
348 | NotationPt.Sort (`NType s) -> NCic.Sort (NCic.Type
349 [`Type,NUri.uri_of_string ("cic:/matita/pts/Type" ^ s ^ ".univ")])
350 | NotationPt.Sort (`NCProp s) -> NCic.Sort (NCic.Type
351 [`CProp,NUri.uri_of_string ("cic:/matita/pts/Type" ^ s ^ ".univ")])
352 | NotationPt.Symbol (symbol, instance) ->
353 Disambiguate.resolve ~env ~mk_choice
354 (Symbol (symbol, instance)) (`Args [])
355 | NotationPt.Variable _
357 | NotationPt.Layout _
358 | NotationPt.Literal _ -> assert false (* god bless Bologna *)
359 and aux_option ~localize loc context annotation = function
360 | None -> NCic.Implicit annotation
361 | Some (NotationPt.AttributedTerm (`Loc loc, term)) ->
362 let res = aux_option ~localize loc context annotation (Some term) in
364 NCicUntrusted.NCicHash.add localization_tbl res loc;
366 | Some (NotationPt.AttributedTerm (_, term)) ->
367 aux_option ~localize loc context annotation (Some term)
368 | Some NotationPt.Implicit `JustOne -> NCic.Implicit annotation
369 | Some NotationPt.Implicit `Vector -> NCic.Implicit `Vector
370 | Some term -> aux ~localize loc context term
372 (fun ~context -> aux ~localize:true HExtlib.dummy_floc context),
373 (fun ~context -> aux_option ~localize:true HExtlib.dummy_floc context)
376 let interpretate_term status ?(create_dummy_ids=false) ~context ~env ~uri
377 ~is_path ast ~obj_context ~localization_tbl ~mk_choice
379 let context = List.map fst context in
381 (interpretate_term_and_interpretate_term_option status
382 ~obj_context ~mk_choice ~create_dummy_ids ~env ~uri ~is_path
387 let interpretate_term_option status ?(create_dummy_ids=false) ~context ~env ~uri
388 ~is_path ~localization_tbl ~mk_choice ~obj_context
390 let context = List.map fst context in
392 (interpretate_term_and_interpretate_term_option status
393 ~obj_context ~mk_choice ~create_dummy_ids ~env ~uri ~is_path
398 let disambiguate_path status path =
399 let localization_tbl = NCicUntrusted.NCicHash.create 23 in
401 (interpretate_term_and_interpretate_term_option status
402 ~obj_context:[] ~mk_choice:(fun _ -> assert false)
403 ~create_dummy_ids:true ~env:DisambiguateTypes.Environment.empty
404 ~uri:None ~is_path:true ~localization_tbl) ~context:[] path
407 let ncic_name_of_ident = function
408 | Ast.Ident (name, None) -> name
412 let interpretate_obj status
413 (* ?(create_dummy_ids=false) *)
414 ~context ~env ~uri ~is_path obj ~localization_tbl ~mk_choice
416 assert (context = []);
417 assert (is_path = false);
418 let interpretate_term ~obj_context =
419 interpretate_term ~mk_choice ~localization_tbl ~obj_context in
420 let interpretate_term_option ~obj_context =
421 interpretate_term_option ~mk_choice ~localization_tbl ~obj_context in
422 let uri = match uri with | None -> assert false | Some u -> u in
424 | NotationPt.Theorem (flavour, name, ty, bo, pragma) ->
426 interpretate_term status
427 ~obj_context:[] ~context:[] ~env ~uri:None ~is_path:false ty
429 let height = (* XXX calculate *) 0 in
431 (match bo,flavour with
433 let attrs = `Provided, flavour, pragma in
434 NCic.Constant ([],name,None,ty',attrs)
435 | Some _,`Axiom -> assert false
437 let attrs = `Provided, flavour, pragma in
438 NCic.Constant ([],name,Some (NCic.Implicit `Term),ty',attrs)
441 | NotationPt.LetRec (kind, defs, _) ->
442 let inductive = kind = `Inductive in
445 (fun (i,acc) (_,(name,_),_,k) ->
447 (ncic_name_of_ident name, NReference.reference_of_spec uri
448 (if inductive then NReference.Fix (i,k,0)
449 else NReference.CoFix i)) :: acc))
454 (fun (params, (name, typ), body, decr_idx) ->
455 let add_binders kind t =
458 NotationPt.Binder (kind, var, t)) params t
461 interpretate_term status
462 ~obj_context ~context ~env ~uri:None ~is_path:false
463 (add_binders `Lambda body)
466 interpretate_term_option status
468 ~context ~env ~uri:None ~is_path:false `Type
469 (HExtlib.map_option (add_binders `Pi) typ)
471 ([],ncic_name_of_ident name, decr_idx, cic_type, cic_body))
474 let attrs = `Provided, flavour, pragma in
475 NCic.Fixpoint (inductive,inductiveFuns,attrs)
478 interpretate_term status
479 ~obj_context:[] ~context:[] ~env ~uri:None ~is_path:false bo
481 let attrs = `Provided, flavour, pragma in
482 NCic.Constant ([],name,Some bo,ty',attrs)))
483 | NotationPt.Inductive (params,tyl) ->
487 (fun (context,res) (name,t) ->
490 None -> NotationPt.Implicit `JustOne
492 let name = cic_name_of_name name in
494 interpretate_term status ~obj_context:[] ~context ~env ~uri:None
497 (name,NCic.Decl t)::context,(name,t)::res
500 context,List.rev res in
502 List.fold_right (fun (name,ty) t -> NCic.Prod (name,ty,t)) params in
503 let leftno = List.length params in
504 let _,inductive,_,_ = try List.hd tyl with Failure _ -> assert false in
508 (fun (i,res) (name,_,_,_) ->
510 NReference.reference_of_spec uri (NReference.Ind (inductive,i,leftno))
512 i+1,(name,nref)::res)
516 (fun (name,_,ty,cl) ->
519 (interpretate_term status ~obj_context:[] ~context ~env ~uri:None
520 ~is_path:false ty) in
526 (interpretate_term status ~obj_context ~context ~env ~uri:None
527 ~is_path:false ty) in
528 let relevance = [] in
531 let relevance = [] in
532 relevance,name,ty',cl'
535 let height = (* XXX calculate *) 0 in
536 let attrs = `Provided, `Regular in
538 NCic.Inductive (inductive,leftno,tyl,attrs)
539 | NotationPt.Record (params,name,ty,fields) ->
543 (fun (context,res) (name,t) ->
546 None -> NotationPt.Implicit `JustOne
548 let name = cic_name_of_name name in
550 interpretate_term status ~obj_context:[] ~context ~env ~uri:None
553 (name,NCic.Decl t)::context,(name,t)::res
556 context,List.rev res in
558 List.fold_right (fun (name,ty) t -> NCic.Prod (name,ty,t)) params in
559 let leftno = List.length params in
562 (interpretate_term status ~obj_context:[] ~context ~env ~uri:None
563 ~is_path:false ty) in
565 NReference.reference_of_spec uri (NReference.Ind (true,0,leftno)) in
566 let obj_context = [name,nref] in
570 (fun (context,res) (name,ty,_coercion,_arity) ->
572 interpretate_term status ~obj_context ~context ~env ~uri:None
574 let context' = (name,NCic.Decl ty)::context in
575 context',(name,ty)::res
576 ) (context,[]) fields) in
578 let mutind = NCic.Const nref in
579 if params = [] then mutind
582 (mutind::mk_rels (List.length params) (List.length fields)) in
584 List.fold_left (fun t (name,ty) -> NCic.Prod (name,ty,t)) concl fields' in
585 let con' = add_params con in
586 let relevance = [] in
587 let tyl = [relevance,name,ty',[relevance,"mk_" ^ name,con']] in
588 let field_names = List.map (fun (x,_,y,z) -> x,y,z) fields in
589 let height = (* XXX calculate *) 0 in
590 let attrs = `Provided, `Record field_names in
592 NCic.Inductive (true,leftno,tyl,attrs)
595 let disambiguate_term (status: #NCicCoercion.status) ~context ~metasenv ~subst
596 ~expty ~mk_implicit ~description_of_alias ~fix_instance ~mk_choice
597 ~aliases ~universe ~lookup_in_library (text,prefix_len,term)
599 let mk_localization_tbl x = NCicUntrusted.NCicHash.create x in
601 MultiPassDisambiguator.disambiguate_thing
602 ~freshen_thing:NotationUtil.freshen_term
603 ~context ~metasenv ~initial_ugraph:() ~aliases
604 ~mk_implicit ~description_of_alias ~fix_instance
605 ~string_context_of_context:(List.map (fun (x,_) -> Some x))
606 ~universe ~uri:None ~pp_thing:(NotationPp.pp_term status)
607 ~passes:(MultiPassDisambiguator.passes ())
608 ~lookup_in_library ~domain_of_thing:Disambiguate.domain_of_term
609 ~interpretate_thing:(interpretate_term status ~obj_context:[] ~mk_choice (?create_dummy_ids:None))
610 ~refine_thing:(refine_term status) (text,prefix_len,term)
611 ~mk_localization_tbl ~expty ~subst
613 List.map (function (a,b,c,d,_) -> a,b,c,d) res, b
616 let disambiguate_obj (status: #NCicCoercion.status)
617 ~mk_implicit ~description_of_alias ~fix_instance ~mk_choice
618 ~aliases ~universe ~lookup_in_library ~uri (text,prefix_len,obj)
620 let mk_localization_tbl x = NCicUntrusted.NCicHash.create x in
622 MultiPassDisambiguator.disambiguate_thing
623 ~freshen_thing:NotationUtil.freshen_obj
624 ~context:[] ~metasenv:[] ~subst:[] ~initial_ugraph:() ~aliases
625 ~mk_implicit ~description_of_alias ~fix_instance
626 ~string_context_of_context:(List.map (fun (x,_) -> Some x))
629 ~pp_thing:(NotationPp.pp_obj (NotationPp.pp_term status))
630 ~passes:(MultiPassDisambiguator.passes ())
631 ~lookup_in_library ~domain_of_thing:Disambiguate.domain_of_obj
632 ~interpretate_thing:(interpretate_obj status ~mk_choice)
633 ~refine_thing:(refine_obj status)
634 (text,prefix_len,obj)
635 ~mk_localization_tbl ~expty:None
637 List.map (function (a,b,c,d,_) -> a,b,c,d) res, b
643 [false, NUri.uri_of_string ("cic:/matita/pts/Type.univ")]
645 [false, NUri.uri_of_string ("cic:/matita/pts/Type"^string_of_int n^".univ")]
649 [false, NUri.uri_of_string ("cic:/matita/pts/CProp.univ")]
651 [false, NUri.uri_of_string ("cic:/matita/pts/CProp"^string_of_int n^".univ")]
653 NCicEnvironment.add_constraint true (mk_type 0) (mk_type 1);
654 NCicEnvironment.add_constraint true (mk_cprop 0) (mk_cprop 1);
655 NCicEnvironment.add_constraint true (mk_cprop 0) (mk_type 1);
656 NCicEnvironment.add_constraint true (mk_type 0) (mk_cprop 1);
657 NCicEnvironment.add_constraint false (mk_cprop 0) (mk_type 0);
658 NCicEnvironment.add_constraint false (mk_type 0) (mk_cprop 0);
660 NCicEnvironment.add_constraint true (mk_type 1) (mk_type 2);
661 NCicEnvironment.add_constraint true (mk_cprop 1) (mk_cprop 2);
662 NCicEnvironment.add_constraint true (mk_cprop 1) (mk_type 2);
663 NCicEnvironment.add_constraint true (mk_type 1) (mk_cprop 2);
664 NCicEnvironment.add_constraint false (mk_cprop 1) (mk_type 1);
665 NCicEnvironment.add_constraint false (mk_type 1) (mk_cprop 1);
667 NCicEnvironment.add_constraint true (mk_type 2) (mk_type 3);
668 NCicEnvironment.add_constraint true (mk_cprop 2) (mk_cprop 3);
669 NCicEnvironment.add_constraint true (mk_cprop 2) (mk_type 3);
670 NCicEnvironment.add_constraint true (mk_type 2) (mk_cprop 3);
671 NCicEnvironment.add_constraint false (mk_cprop 2) (mk_type 2);
672 NCicEnvironment.add_constraint false (mk_type 2) (mk_cprop 2);
674 NCicEnvironment.add_constraint false (mk_cprop 3) (mk_type 3);
675 NCicEnvironment.add_constraint false (mk_type 3) (mk_cprop 3);