open Synthesizer
open Relational
open GT
open OCanren
open OCanren.Std

(* @type answer  = St.ground GT.list with show *)
(* @type answerArgs = (Arg.ground List.ground) GT.list with show *)
(* @type answerValue = Value.ground GT.list with show *)
(* @type answerNat = Nat.ground GT.list with show *)
(* @type answerNats = (Nat.ground List.ground) GT.list with show *)
(* @type answerTag = Tag.ground GT.list with show *)
(* @type answerTags = (Tag.ground List.ground) GT.list with show *)
(* @type answerCopyCap = CopyCap.ground GT.list with show *)
(* @type answerCopyCaps = (CopyCap.ground List.ground) GT.list with show *)

(* let inv_id_t _ = show(answerNat) (Stream.take (run q *)
  (* (fun q -> ocanren { inv_ido 2 1 q }) *)
  (* (fun q -> q#reify Nat.prj_exn))) *)

(* let inv_id_t2 _ = show(answerNat) (Stream.take (run q *)
  (* (fun q -> ocanren { inv_ido 2 0 q }) *)
  (* (fun q -> q#reify Nat.prj_exn))) *)

(* let inv_id_t3 _ = show(answerNat) (Stream.take (run q *)
  (* (fun q -> ocanren { inv_ido 2 q 0 }) *)
  (* (fun q -> q#reify Nat.prj_exn))) *)

(* let list_drop_t _ = show(answerNats) (Stream.take (run q *)
  (* (fun q -> ocanren { list_dropo 2 [1; 2; 3] q }) *)
  (* (fun q -> q#reify (List.prj_exn Nat.prj_exn)))) *)

(* let list_replace_t  _ = show(answerNats) (Stream.take (run q *)
  (* (fun q -> ocanren { list_replaceo [1; 2; 3; 4] 1 0 q }) *)
  (* (fun q -> q#reify (List.prj_exn Nat.prj_exn)))) *)

(* let arg_to_value_t _ = show(answerValue) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* ocanren { *)
    (* fresh s in *)
      (* empty_stateo s & *)
      (* arg_to_valueo s RValue q }) *)
  (* (fun q -> q#reify (Value.prj_exn)))) *)

(* let st_add_arg_t _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* ocanren { *)
    (* fresh s, s', cnt in *)
      (* empty_stateo s & *)
      (* empty_stateo s' & *)
      (* st_add_argo s  s' Nat.o rwi_val RValue q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let write_eval_t1 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Bot; Bot], 2, []) & *)
      (* p == [FunDecl ([wi_ref; wi_ref], [Write 0; Write 1])] & *)
      (* stmt == Write 0 & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let write_eval_t2 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Bot; Bot], 2, []) & *)
      (* p == [FunDecl ([wi_ref; wi_ref], [Write 0; Write 1])] & *)
      (* stmt == Write 1 & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let writes_eval_t _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmts in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Bot; Bot], 2, []) & *)
      (* p == [FunDecl ([wi_ref; wi_ref], [Write 0; Write 1])] & *)
      (* stmts == [Write 0; Write 1] & *)
      (* eval_bodyo s p stmts q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let call_eval_t1 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 0 (Std.pair wi_ref 0)], [Unit], 1, []) & *)
      (* p == [FunDecl ([wi_ref], [Write 0])] & *)
      (* stmt == Call (0, [0]) & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let call_eval_t2 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Unit; Unit], 2, []) & *)
      (* p == [FunDecl ([wi_ref], [Write 0])] & *)
      (* stmt == Call (0, [0]) & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let call_eval_t3 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Unit; Unit], 2, []) & *)
      (* p == [FunDecl ([wi_ref], [Write 0])] & *)
      (* stmt == Call (0, [1]) & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let call_eval_t4 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Unit; Unit], 2, []) & *)
      (* p == [FunDecl ([wi_ref; wi_ref], [Write 0; Write 1])] & *)
      (* stmt == Call (0, [0; 1]) & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let call_eval_t5 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* let open Stmt in *)
            (* let open FunDecl in *)
            (* ocanren { *)
    (* fresh s, p, stmt in *)
      (* s == St ([Std.pair 1 (Std.pair wi_ref 1); Std.pair 0 (Std.pair wi_ref 0)], [Unit; Unit], 2, []) & *)
      (* p == [FunDecl ([wi_ref; wi_ref], [Write 0; Write 1])] & *)
      (* stmt == Call (0, [1; 0]) & *)
      (* eval_stmto s p stmt q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let mem_set_t1 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* ocanren { *)
    (* fresh s in *)
      (* s == St ([Std.pair 0 (Std.pair wi_ref 0)], [Bot], 1, []) & *)
      (* mem_seto s 0 Unit q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let mem_set_t2 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* ocanren { *)
    (* fresh s in *)
      (* s == St ([Std.pair 0 (Std.pair wi_ref 0)], [Unit], 1, []) & *)
      (* mem_seto s 0 Bot q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let meem_set_t3 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* let open Value in *)
            (* let open St in *)
            (* ocanren { *)
    (* fresh s in *)
      (* s == St ([Std.pair 0 (Std.pair wi_ref 1)], [Unit; Unit], 2, []) & *)
      (* mem_seto s 0 Bot q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let add_arg_folder_t _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* ocanren { *)
    (* fresh s, s', cnt in *)
      (* empty_stateo s & *)
      (* empty_stateo s' & *)
      (* add_arg_foldero s (Std.pair s' Nat.o) rwi_val RValue (Std.pair q cnt) }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* let foldl2_t _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Arg in *)
            (* let open Tag in *)
            (* ocanren { *)
    (* fresh s, s', cnt, arg_tags, args in *)
      (* arg_tags == [rwi_val] & *)
      (* args == [RValue] & *)
      (* empty_stateo s & *)
      (* empty_stateo s' & *)
      (* list_foldl2o (add_arg_foldero s) (Std.pair s' Nat.o) arg_tags args (Std.pair q cnt) }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)


(* let rvalue_t _ = show(answerArgs) (Stream.take ~n:3 (run q *)
  (* (fun q -> let open Arg in *)
            (* ocanren {fresh v in List.mapo arg_to_rvalueo v q}) *)
  (* (fun q -> q#reify (List.prj_exn Arg.prj_exn)))) *)

(* empty state test *)
(* let empty_state_t _ = show(answer) (Stream.take (run q *)
  (* (fun q -> ocanren {empty_stateo q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* fun eval test *)
(* let fun_eval_t1 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> (* let open Prog in *) *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren { fresh s, p, d in *)
                        (* empty_stateo s & *)
                        (* p == [] & *)
                        (* d == FunDecl ([], []) & *)
                        (* eval_fun_empty_argso s p d q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* fun eval test *)
(* let fun_eval_t2 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> (* let open Prog in *) *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren { fresh s, p, d in *)
                        (* empty_stateo s & *)
                        (* p == [] & *)
                        (* d == FunDecl ([wi_val], [Write 0; Read 0]) & *)
                        (* eval_fun_empty_argso s p d q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* fun eval test *)
(* let fun_eval_t3 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> (* let open Prog in *) *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren { fresh s, p, d in *)
                        (* empty_stateo s & *)
                        (* p == [FunDecl ([wi_ref], [Write 0])] & *)
                        (* d == FunDecl ([wi_val], [Call (0, [0]); Read 0]) & *)
                        (* eval_fun_empty_argso s p d q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* fun eval test *)
(* let fun_eval_t4 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> (* let open Prog in *) *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren { fresh s, p, d in *)
                        (* empty_stateo s & *)
                        (* p == [FunDecl ([wi_ref], [Write 0])] & *)
                        (* d == FunDecl ([wi_val; wi_val], [Call (0, [1]); Write 0; Read 1]) & *)
                        (* eval_fun_empty_argso s p d q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* fun eval test *)
(* let fun_eval_t5 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> (* let open Prog in *) *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren { fresh s, p, d in *)
                        (* empty_stateo s & *)
                        (* p == [FunDecl ([wi_ref; wi_ref], [Write 0; Write 1])] & *)
                        (* d == FunDecl ([wi_val; wi_val], [Call (0, [1; 0]); Write 0; Read 0; Read 1]) & *)
                        (* eval_fun_empty_argso s p d q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* fun eval test *)
(* let fun_eval_t6 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> (* let open Prog in *) *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren { fresh s, p, d in *)
                        (* empty_stateo s & *)
                        (* p == [FunDecl ([wi_val], [Write 0])] & *)
                        (* d == FunDecl ([wi_val], [Call (0, [0])]) & *)
                        (* eval_fun_empty_argso s p d q }) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* prog eval test *)
(* let prog_eval_t1 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([], FunDecl ([wi_val], [Write 0; Read 0]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* prog with func eval test *)
(* let prog_eval_t2 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([FunDecl ([wi_val], [Write 0; Read 0])], *)
                                       (* FunDecl ([wi_val], [Write 0; Read 0; Call (0, [0])]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* prog with func eval test *)
(* let prog_eval_t3 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([FunDecl ([wi_ref], [Write 0; Read 0])], *)
                                       (* FunDecl ([wi_val], [Write 0; Read 0; Call (0, [0])]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* prog with func eval test *)
(* let prog_eval_t4 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([FunDecl ([wi_ref], [Write 0])], *)
                                       (* FunDecl ([wi_val], [Call (0, [0]); Read 0]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* prog with func eval test *)
(* let prog_eval_t5 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([FunDecl ([wi_val], [Write 0])], *)
                                       (* FunDecl ([wi_val], [Call (0, [0]); Read 0]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* prog with func eval test *)
(* let prog_eval_t6 _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([FunDecl ([ri_val], [Write 0])], *)
                                       (* FunDecl ([wi_val], [Call (0, [0]); Read 0]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)

(* annotation gen prog test *)
(* let synt_t1 _ = show(answerTag) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {i_any q & *)
                     (* eval_progo (Prog ([FunDecl ([q], [Write 0])], *)
                                       (* FunDecl ([wi_val], [Call (0, [0]); Read 0]))) (St ([], [], 0, [0]))}) *)
  (* (fun q -> q#reify (Tag.prj_exn)))) *)

(* annotation gen prog test *)
(* let synt_t2 _ = show(answerTag) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {i_any q & is_not_reado q & *)
                     (* eval_progo (Prog ([FunDecl ([q], [Write 0])], *)
                                       (* FunDecl ([wi_val], [Call (0, [0]); Write 0; Read 0]))) (St ([], [], 0, [0]))}) *)
  (* (fun q -> q#reify (Tag.prj_exn)))) *)

(* annotation gen prog test *)
(* let synt_t3 _ = show(answerTags) (Stream.take (run qr *)
  (* (fun q r -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {i_any q & is_not_reado q & i_any r & is_not_reado r & *)
                     (* eval_progo (Prog ([FunDecl ([q], [Write 0])], *)
                                       (* FunDecl ([r], [Call (0, [0]); Write 0; Read 0]))) (St ([], [], 0, [0]))}) *)
  (* (fun q r -> [q#reify (Tag.prj_exn); r#reify (Tag.prj_exn)]))) *)

(* annotation gen prog test *)
(* let synt_t4 _ = show(answerTags) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {i_any q & is_not_reado q & *)
                     (* eval_progo (Prog ([FunDecl ([q], [Write 0])], *)
                                       (* FunDecl ([wi_val; wi_val], [Call (0, [1]); Write 0; Read 1]))) (St ([], [], 0, [0]))}) *)
  (* (fun q -> [q#reify (Tag.prj_exn)]))) (* -> [Val] *) *)

(* annotation gen prog test *)
(* let synt_t5 _ = show(answerCopyCaps) (Stream.take (run qr *)
  (* (fun q r -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {fresh q', r' in *)
                     (* i_any q' & is_not_reado q' & *)
                     (* i_any r' & is_not_reado r' & is_never_writeo r' & *)
                     (* eq_copyo q' q & eq_copyo r' r & *)
                     (* eval_progo (Prog ([FunDecl ([q'; r'], [Write 0])], *)
                                       (* FunDecl ([wi_val; wi_val], [Call (0, [0; 1]); Write 0; Read 0]))) (St ([], [], 0, [0]))}) *)
  (* (fun q r -> [q#reify (CopyCap.prj_exn); r#reify (CopyCap.prj_exn)]))) (* all variants *) *)

(* annotation gen prog test *)
(* let synt_t6 _ = show(answerCopyCaps) (Stream.take (run qr *)
  (* (fun q r -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {fresh q', r' in *)
                     (* i_any q' & is_not_reado q' & *)
                     (* i_any r' & is_not_reado r' & is_never_writeo r' & *)
                     (* eq_copyo q' q & eq_copyo r' r & *)
                     (* eval_progo (Prog ([FunDecl ([q'; r'], [Write 0])], *)
                                       (* FunDecl ([wi_val; wi_val], [Call (0, [1; 0]); Write 0; Read 0]))) (St ([], [], 0, [0]))}) *)
  (* (fun q r -> [q#reify (CopyCap.prj_exn); r#reify (CopyCap.prj_exn)]))) (* all variants *) *)

(* annotation gen prog test *)
(* let synt_t7 _ = show(answerCopyCaps) (Stream.take (run qr *)
  (* (fun q r -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {fresh q', r' in *)
                     (* i_any q' & is_not_reado q' & i_any r' & is_not_reado r' & *)
                     (* eq_copyo q' q & eq_copyo r' r & *)
                     (* eval_progo (Prog ([FunDecl ([q'; r'], [Write 0; Write 1])], *)
                                       (* FunDecl ([wi_val; wi_val], [Call (0, [0; 1]); Write 0; Read 0; Read 1]))) (St ([], [], 0, [0]))}) *)
  (* (fun q r -> [q#reify (CopyCap.prj_exn); r#reify (CopyCap.prj_exn)]))) *)

(* annotation gen prog test *)
(* let synt_t8 _ = show(answerCopyCaps) (Stream.take (run qr *)
  (* (fun q r -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {fresh q', r' in *)
                     (* i_any q' & is_not_reado q' & i_any r' & is_not_reado r' & *)
                     (* eq_copyo q' q & eq_copyo r' r & *)
                     (* eval_progo (Prog ([FunDecl ([q'; r'], [Write 0; Write 1])], *)
                                       (* FunDecl ([wi_val; wi_val], [Call (0, [1; 0]); Write 0; Read 0; Read 1]))) (St ([], [], 0, [0]))}) *)
  (* (fun q r -> [q#reify (CopyCap.prj_exn); r#reify (CopyCap.prj_exn)]))) *)

(* annotation gen prog test *)
(* let synt_t9 _ = show(answerCopyCaps) (Stream.take (run qr *)
  (* (fun q r -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* let open St in *)
            (* ocanren {fresh q', r' in *)
                     (* i_any q' & is_not_reado q' & *)
                     (* i_any r' & is_reado r' & is_never_writeo r' & *)
                     (* eq_copyo q' q & eq_copyo r' r & *)
                     (* eval_progo (Prog ([FunDecl ([q'; r'], [Write 0; Read 1])], *)
                                       (* FunDecl ([wi_val; wi_val], [Call (0, [0; 1]); Read 0; Read 1]))) (St ([], [], 0, [0]))}) *)
  (* (fun q r -> [q#reify (CopyCap.prj_exn); r#reify (CopyCap.prj_exn)]))) *)

(* TODO: FIXME: implement memoization cuts *)
(* prog with recursive function call *)
(* let rec_eval_t _ = show(answer) (Stream.take (run q *)
  (* (fun q -> let open Prog in *)
            (* let open FunDecl in *)
            (* let open Tag in *)
            (* let open Stmt in *)
            (* ocanren {eval_progo (Prog ([FunDecl ([wi_ref], [Write 0; Call (0, [0])])], *)
                                       (* FunDecl ([wi_val], [Call (0, [0]); Write 0; Read 0]))) q}) *)
  (* (fun q -> q#reify (St.prj_exn)))) *)