src/HOL/Tools/Nitpick/nitpick_kodkod.ML
changeset 34126 8a2c5d7aff51
parent 34124 c4628a1dcf75
child 34288 cf455b5880e1
--- a/src/HOL/Tools/Nitpick/nitpick_kodkod.ML	Thu Dec 17 15:22:27 2009 +0100
+++ b/src/HOL/Tools/Nitpick/nitpick_kodkod.ML	Fri Dec 18 12:00:29 2009 +0100
@@ -49,44 +49,46 @@
 open Nitpick_Rep
 open Nitpick_Nut
 
-type nfa_transition = Kodkod.rel_expr * typ
+structure KK = Kodkod
+
+type nfa_transition = KK.rel_expr * typ
 type nfa_entry = typ * nfa_transition list
 type nfa_table = nfa_entry list
 
 structure NfaGraph = Graph(type key = typ val ord = TermOrd.typ_ord)
 
-(* int -> Kodkod.int_expr list *)
-fun flip_nums n = index_seq 1 n @ [0] |> map Kodkod.Num
+(* int -> KK.int_expr list *)
+fun flip_nums n = index_seq 1 n @ [0] |> map KK.Num
 
-(* int -> int -> int -> Kodkod.bound list -> Kodkod.formula -> int *)
+(* int -> int -> int -> KK.bound list -> KK.formula -> int *)
 fun univ_card nat_card int_card main_j0 bounds formula =
   let
-    (* Kodkod.rel_expr -> int -> int *)
+    (* KK.rel_expr -> int -> int *)
     fun rel_expr_func r k =
       Int.max (k, case r of
-                    Kodkod.Atom j => j + 1
-                  | Kodkod.AtomSeq (k', j0) => j0 + k'
+                    KK.Atom j => j + 1
+                  | KK.AtomSeq (k', j0) => j0 + k'
                   | _ => 0)
-    (* Kodkod.tuple -> int -> int *)
+    (* KK.tuple -> int -> int *)
     fun tuple_func t k =
       case t of
-        Kodkod.Tuple js => fold Integer.max (map (Integer.add 1) js) k
+        KK.Tuple js => fold Integer.max (map (Integer.add 1) js) k
       | _ => k
-    (* Kodkod.tuple_set -> int -> int *)
+    (* KK.tuple_set -> int -> int *)
     fun tuple_set_func ts k =
-      Int.max (k, case ts of Kodkod.TupleAtomSeq (k', j0) => j0 + k' | _ => 0)
+      Int.max (k, case ts of KK.TupleAtomSeq (k', j0) => j0 + k' | _ => 0)
     val expr_F = {formula_func = K I, rel_expr_func = rel_expr_func,
                   int_expr_func = K I}
     val tuple_F = {tuple_func = tuple_func, tuple_set_func = tuple_set_func}
-    val card = fold (Kodkod.fold_bound expr_F tuple_F) bounds 1
-               |> Kodkod.fold_formula expr_F formula
+    val card = fold (KK.fold_bound expr_F tuple_F) bounds 1
+               |> KK.fold_formula expr_F formula
   in Int.max (main_j0 + fold Integer.max [2, nat_card, int_card] 0, card) end
 
-(* int -> Kodkod.formula -> unit *)
+(* int -> KK.formula -> unit *)
 fun check_bits bits formula =
   let
-    (* Kodkod.int_expr -> unit -> unit *)
-    fun int_expr_func (Kodkod.Num k) () =
+    (* KK.int_expr -> unit -> unit *)
+    fun int_expr_func (KK.Num k) () =
         if is_twos_complement_representable bits k then
           ()
         else
@@ -96,39 +98,38 @@
       | int_expr_func _ () = ()
     val expr_F = {formula_func = K I, rel_expr_func = K I,
                   int_expr_func = int_expr_func}
-  in Kodkod.fold_formula expr_F formula () end
+  in KK.fold_formula expr_F formula () end
 
 (* int -> int -> unit *)
 fun check_arity univ_card n =
-  if n > Kodkod.max_arity univ_card then
+  if n > KK.max_arity univ_card then
     raise TOO_LARGE ("Nitpick_Kodkod.check_arity",
                      "arity " ^ string_of_int n ^ " too large for universe of \
                      \cardinality " ^ string_of_int univ_card)
   else
     ()
 
-(* bool -> int -> int list -> Kodkod.tuple *)
+(* bool -> int -> int list -> KK.tuple *)
 fun kk_tuple debug univ_card js =
   if debug then
-    Kodkod.Tuple js
+    KK.Tuple js
   else
-    Kodkod.TupleIndex (length js,
-                       fold (fn j => fn accum => accum * univ_card + j) js 0)
+    KK.TupleIndex (length js,
+                   fold (fn j => fn accum => accum * univ_card + j) js 0)
 
-(* (int * int) list -> Kodkod.tuple_set *)
-val tuple_set_from_atom_schema =
-  foldl1 Kodkod.TupleProduct o map Kodkod.TupleAtomSeq
-(* rep -> Kodkod.tuple_set *)
+(* (int * int) list -> KK.tuple_set *)
+val tuple_set_from_atom_schema = foldl1 KK.TupleProduct o map KK.TupleAtomSeq
+(* rep -> KK.tuple_set *)
 val upper_bound_for_rep = tuple_set_from_atom_schema o atom_schema_of_rep
 
-(* int -> Kodkod.tuple_set *)
-val single_atom = Kodkod.TupleSet o single o Kodkod.Tuple o single
-(* int -> Kodkod.int_bound list *)
+(* int -> KK.tuple_set *)
+val single_atom = KK.TupleSet o single o KK.Tuple o single
+(* int -> KK.int_bound list *)
 fun sequential_int_bounds n = [(NONE, map single_atom (index_seq 0 n))]
-(* int -> int -> Kodkod.int_bound list *)
+(* int -> int -> KK.int_bound list *)
 fun pow_of_two_int_bounds bits j0 univ_card =
   let
-    (* int -> int -> int -> Kodkod.int_bound list *)
+    (* int -> int -> int -> KK.int_bound list *)
     fun aux 0  _ _ = []
       | aux 1 pow_of_two j =
         if j < univ_card then [(SOME (~ pow_of_two), [single_atom j])] else []
@@ -137,11 +138,11 @@
         aux (iter - 1) (2 * pow_of_two) (j + 1)
   in aux (bits + 1) 1 j0 end
 
-(* Kodkod.formula -> Kodkod.n_ary_index list *)
+(* KK.formula -> KK.n_ary_index list *)
 fun built_in_rels_in_formula formula =
   let
-    (* Kodkod.rel_expr -> Kodkod.n_ary_index list -> Kodkod.n_ary_index list *)
-    fun rel_expr_func (r as Kodkod.Rel (x as (n, j))) =
+    (* KK.rel_expr -> KK.n_ary_index list -> KK.n_ary_index list *)
+    fun rel_expr_func (r as KK.Rel (x as (n, j))) =
         if x = unsigned_bit_word_sel_rel orelse x = signed_bit_word_sel_rel then
           I
         else
@@ -151,7 +152,7 @@
       | rel_expr_func _ = I
     val expr_F = {formula_func = K I, rel_expr_func = rel_expr_func,
                   int_expr_func = K I}
-  in Kodkod.fold_formula expr_F formula [] end
+  in KK.fold_formula expr_F formula [] end
 
 val max_table_size = 65536
 
@@ -163,7 +164,7 @@
   else
     ()
 
-(* bool -> int -> int * int -> (int -> int) -> Kodkod.tuple list *)
+(* bool -> int -> int * int -> (int -> int) -> KK.tuple list *)
 fun tabulate_func1 debug univ_card (k, j0) f =
   (check_table_size k;
    map_filter (fn j1 => let val j2 = f j1 in
@@ -172,7 +173,7 @@
                           else
                             NONE
                         end) (index_seq 0 k))
-(* bool -> int -> int * int -> int -> (int * int -> int) -> Kodkod.tuple list *)
+(* bool -> int -> int * int -> int -> (int * int -> int) -> KK.tuple list *)
 fun tabulate_op2 debug univ_card (k, j0) res_j0 f =
   (check_table_size (k * k);
    map_filter (fn j => let
@@ -187,7 +188,7 @@
                            NONE
                        end) (index_seq 0 (k * k)))
 (* bool -> int -> int * int -> int -> (int * int -> int * int)
-   -> Kodkod.tuple list *)
+   -> KK.tuple list *)
 fun tabulate_op2_2 debug univ_card (k, j0) res_j0 f =
   (check_table_size (k * k);
    map_filter (fn j => let
@@ -202,13 +203,13 @@
                          else
                            NONE
                        end) (index_seq 0 (k * k)))
-(* bool -> int -> int * int -> (int * int -> int) -> Kodkod.tuple list *)
+(* bool -> int -> int * int -> (int * int -> int) -> KK.tuple list *)
 fun tabulate_nat_op2 debug univ_card (k, j0) f =
   tabulate_op2 debug univ_card (k, j0) j0 (atom_for_nat (k, 0) o f)
 fun tabulate_int_op2 debug univ_card (k, j0) f =
   tabulate_op2 debug univ_card (k, j0) j0
                (atom_for_int (k, 0) o f o pairself (int_for_atom (k, 0)))
-(* bool -> int -> int * int -> (int * int -> int * int) -> Kodkod.tuple list *)
+(* bool -> int -> int * int -> (int * int -> int * int) -> KK.tuple list *)
 fun tabulate_int_op2_2 debug univ_card (k, j0) f =
   tabulate_op2_2 debug univ_card (k, j0) j0
                  (pairself (atom_for_int (k, 0)) o f
@@ -228,7 +229,7 @@
   else let val p = isa_zgcd (m, n) in (isa_div (m, p), isa_div (n, p)) end
 
 (* bool -> int -> int -> int -> int -> int * int
-   -> string * bool * Kodkod.tuple list *)
+   -> string * bool * KK.tuple list *)
 fun tabulate_built_in_rel debug univ_card nat_card int_card j0 (x as (n, _)) =
   (check_arity univ_card n;
    if x = not3_rel then
@@ -269,15 +270,14 @@
    else
      raise ARG ("Nitpick_Kodkod.tabulate_built_in_rel", "unknown relation"))
 
-(* bool -> int -> int -> int -> int -> int * int -> Kodkod.rel_expr
-   -> Kodkod.bound *)
+(* bool -> int -> int -> int -> int -> int * int -> KK.rel_expr -> KK.bound *)
 fun bound_for_built_in_rel debug univ_card nat_card int_card j0 x =
   let
     val (nick, ts) = tabulate_built_in_rel debug univ_card nat_card int_card
                                            j0 x
-  in ([(x, nick)], [Kodkod.TupleSet ts]) end
+  in ([(x, nick)], [KK.TupleSet ts]) end
 
-(* bool -> int -> int -> int -> int -> Kodkod.formula -> Kodkod.bound list *)
+(* bool -> int -> int -> int -> int -> KK.formula -> KK.bound list *)
 fun bounds_for_built_in_rels_in_formula debug univ_card nat_card int_card j0 =
   map (bound_for_built_in_rel debug univ_card nat_card int_card j0)
   o built_in_rels_in_formula
@@ -288,7 +288,7 @@
   (if debug then " :: " ^ plain_string_from_yxml (Syntax.string_of_typ ctxt T)
    else "") ^ " : " ^ string_for_rep R
 
-(* Proof.context -> bool -> nut -> Kodkod.bound *)
+(* Proof.context -> bool -> nut -> KK.bound *)
 fun bound_for_plain_rel ctxt debug (u as FreeRel (x, T, R, nick)) =
     ([(x, bound_comment ctxt debug nick T R)],
      if nick = @{const_name bisim_iterator_max} then
@@ -296,11 +296,11 @@
          Atom (k, j0) => [single_atom (k - 1 + j0)]
        | _ => raise NUT ("Nitpick_Kodkod.bound_for_plain_rel", [u])
      else
-       [Kodkod.TupleSet [], upper_bound_for_rep R])
+       [KK.TupleSet [], upper_bound_for_rep R])
   | bound_for_plain_rel _ _ u =
     raise NUT ("Nitpick_Kodkod.bound_for_plain_rel", [u])
 
-(* Proof.context -> bool -> dtype_spec list -> nut -> Kodkod.bound *)
+(* Proof.context -> bool -> dtype_spec list -> nut -> KK.bound *)
 fun bound_for_sel_rel ctxt debug dtypes
         (FreeRel (x, T as Type ("fun", [T1, T2]), R as Func (Atom (_, j0), R2),
                   nick)) =
@@ -310,26 +310,24 @@
     in
       ([(x, bound_comment ctxt debug nick T R)],
        if explicit_max = 0 then
-         [Kodkod.TupleSet []]
+         [KK.TupleSet []]
        else
-         let val ts = Kodkod.TupleAtomSeq (epsilon - delta, delta + j0) in
+         let val ts = KK.TupleAtomSeq (epsilon - delta, delta + j0) in
            if R2 = Formula Neut then
-             [ts] |> not exclusive ? cons (Kodkod.TupleSet [])
+             [ts] |> not exclusive ? cons (KK.TupleSet [])
            else
-             [Kodkod.TupleSet [],
-              Kodkod.TupleProduct (ts, upper_bound_for_rep R2)]
+             [KK.TupleSet [], KK.TupleProduct (ts, upper_bound_for_rep R2)]
          end)
     end
   | bound_for_sel_rel _ _ _ u =
     raise NUT ("Nitpick_Kodkod.bound_for_sel_rel", [u])
 
-(* Kodkod.bound list -> Kodkod.bound list *)
+(* KK.bound list -> KK.bound list *)
 fun merge_bounds bs =
   let
-    (* Kodkod.bound -> int *)
+    (* KK.bound -> int *)
     fun arity (zs, _) = fst (fst (hd zs))
-    (* Kodkod.bound list -> Kodkod.bound -> Kodkod.bound list
-       -> Kodkod.bound list *)
+    (* KK.bound list -> KK.bound -> KK.bound list -> KK.bound list *)
     fun add_bound ds b [] = List.revAppend (ds, [b])
       | add_bound ds b (c :: cs) =
         if arity b = arity c andalso snd b = snd c then
@@ -338,40 +336,40 @@
           add_bound (c :: ds) b cs
   in fold (add_bound []) bs [] end
 
-(* int -> int -> Kodkod.rel_expr list *)
-fun unary_var_seq j0 n = map (curry Kodkod.Var 1) (index_seq j0 n)
+(* int -> int -> KK.rel_expr list *)
+fun unary_var_seq j0 n = map (curry KK.Var 1) (index_seq j0 n)
 
-(* int list -> Kodkod.rel_expr *)
-val singleton_from_combination = foldl1 Kodkod.Product o map Kodkod.Atom
-(* rep -> Kodkod.rel_expr list *)
+(* int list -> KK.rel_expr *)
+val singleton_from_combination = foldl1 KK.Product o map KK.Atom
+(* rep -> KK.rel_expr list *)
 fun all_singletons_for_rep R =
   if is_lone_rep R then
     all_combinations_for_rep R |> map singleton_from_combination
   else
     raise REP ("Nitpick_Kodkod.all_singletons_for_rep", [R])
 
-(* Kodkod.rel_expr -> Kodkod.rel_expr list *)
-fun unpack_products (Kodkod.Product (r1, r2)) =
+(* KK.rel_expr -> KK.rel_expr list *)
+fun unpack_products (KK.Product (r1, r2)) =
     unpack_products r1 @ unpack_products r2
   | unpack_products r = [r]
-fun unpack_joins (Kodkod.Join (r1, r2)) = unpack_joins r1 @ unpack_joins r2
+fun unpack_joins (KK.Join (r1, r2)) = unpack_joins r1 @ unpack_joins r2
   | unpack_joins r = [r]
 
-(* rep -> Kodkod.rel_expr *)
+(* rep -> KK.rel_expr *)
 val empty_rel_for_rep = empty_n_ary_rel o arity_of_rep
 fun full_rel_for_rep R =
   case atom_schema_of_rep R of
     [] => raise REP ("Nitpick_Kodkod.full_rel_for_rep", [R])
-  | schema => foldl1 Kodkod.Product (map Kodkod.AtomSeq schema)
+  | schema => foldl1 KK.Product (map KK.AtomSeq schema)
 
-(* int -> int list -> Kodkod.decl list *)
+(* int -> int list -> KK.decl list *)
 fun decls_for_atom_schema j0 schema =
-  map2 (fn j => fn x => Kodkod.DeclOne ((1, j), Kodkod.AtomSeq x))
+  map2 (fn j => fn x => KK.DeclOne ((1, j), KK.AtomSeq x))
        (index_seq j0 (length schema)) schema
 
 (* The type constraint below is a workaround for a Poly/ML bug. *)
 
-(* kodkod_constrs -> rep -> Kodkod.rel_expr -> Kodkod.formula *)
+(* kodkod_constrs -> rep -> KK.rel_expr -> KK.formula *)
 fun d_n_ary_function ({kk_all, kk_join, kk_lone, kk_one, ...} : kodkod_constrs)
                      R r =
   let val body_R = body_rep R in
@@ -380,13 +378,13 @@
         val binder_schema = atom_schema_of_reps (binder_reps R)
         val body_schema = atom_schema_of_rep body_R
         val one = is_one_rep body_R
-        val opt_x = case r of Kodkod.Rel x => SOME x | _ => NONE
+        val opt_x = case r of KK.Rel x => SOME x | _ => NONE
       in
         if opt_x <> NONE andalso length binder_schema = 1
            andalso length body_schema = 1 then
-          (if one then Kodkod.Function else Kodkod.Functional)
-              (the opt_x, Kodkod.AtomSeq (hd binder_schema),
-               Kodkod.AtomSeq (hd body_schema))
+          (if one then KK.Function else KK.Functional)
+              (the opt_x, KK.AtomSeq (hd binder_schema),
+               KK.AtomSeq (hd body_schema))
         else
           let
             val decls = decls_for_atom_schema ~1 binder_schema
@@ -395,12 +393,12 @@
           in kk_all decls (kk_xone (fold kk_join vars r)) end
       end
     else
-      Kodkod.True
+      KK.True
   end
-fun kk_n_ary_function kk R (r as Kodkod.Rel x) =
+fun kk_n_ary_function kk R (r as KK.Rel x) =
     if not (is_opt_rep R) then
       if x = suc_rel then
-        Kodkod.False
+        KK.False
       else if x = nat_add_rel then
         formula_for_bool (card_of_rep (body_rep R) = 1)
       else if x = nat_multiply_rel then
@@ -408,58 +406,56 @@
       else
         d_n_ary_function kk R r
     else if x = nat_subtract_rel then
-      Kodkod.True
+      KK.True
     else
       d_n_ary_function kk R r
   | kk_n_ary_function kk R r = d_n_ary_function kk R r
 
-(* kodkod_constrs -> Kodkod.rel_expr list -> Kodkod.formula *)
-fun kk_disjoint_sets _ [] = Kodkod.True
+(* kodkod_constrs -> KK.rel_expr list -> KK.formula *)
+fun kk_disjoint_sets _ [] = KK.True
   | kk_disjoint_sets (kk as {kk_and, kk_no, kk_intersect, ...} : kodkod_constrs)
                      (r :: rs) =
     fold (kk_and o kk_no o kk_intersect r) rs (kk_disjoint_sets kk rs)
 
-(* int -> kodkod_constrs -> (Kodkod.rel_expr -> Kodkod.rel_expr)
-   -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* int -> kodkod_constrs -> (KK.rel_expr -> KK.rel_expr) -> KK.rel_expr
+   -> KK.rel_expr *)
 fun basic_rel_rel_let j ({kk_rel_let, ...} : kodkod_constrs) f r =
   if inline_rel_expr r then
     f r
   else
-    let val x = (Kodkod.arity_of_rel_expr r, j) in
-      kk_rel_let [Kodkod.AssignRelReg (x, r)] (f (Kodkod.RelReg x))
+    let val x = (KK.arity_of_rel_expr r, j) in
+      kk_rel_let [KK.AssignRelReg (x, r)] (f (KK.RelReg x))
     end
-(* kodkod_constrs -> (Kodkod.rel_expr -> Kodkod.rel_expr) -> Kodkod.rel_expr
-   -> Kodkod.rel_expr *)
+(* kodkod_constrs -> (KK.rel_expr -> KK.rel_expr) -> KK.rel_expr
+   -> KK.rel_expr *)
 val single_rel_rel_let = basic_rel_rel_let 0
-(* kodkod_constrs -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr)
-   -> Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> (KK.rel_expr -> KK.rel_expr -> KK.rel_expr) -> KK.rel_expr
+   -> KK.rel_expr -> KK.rel_expr *)
 fun double_rel_rel_let kk f r1 r2 =
   single_rel_rel_let kk (fn r1 => basic_rel_rel_let 1 kk (f r1) r2) r1
-(* kodkod_constrs
-   -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr)
-   -> Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr
-   -> Kodkod.rel_expr *)
+(* kodkod_constrs -> (KK.rel_expr -> KK.rel_expr -> KK.rel_expr -> KK.rel_expr)
+   -> KK.rel_expr -> KK.rel_expr -> KK.rel_expr -> KK.rel_expr *)
 fun tripl_rel_rel_let kk f r1 r2 r3 =
   double_rel_rel_let kk
       (fn r1 => fn r2 => basic_rel_rel_let 2 kk (f r1 r2) r3) r1 r2
 
-(* kodkod_constrs -> int -> Kodkod.formula -> Kodkod.rel_expr *)
+(* kodkod_constrs -> int -> KK.formula -> KK.rel_expr *)
 fun atom_from_formula ({kk_rel_if, ...} : kodkod_constrs) j0 f =
-  kk_rel_if f (Kodkod.Atom (j0 + 1)) (Kodkod.Atom j0)
-(* kodkod_constrs -> rep -> Kodkod.formula -> Kodkod.rel_expr *)
+  kk_rel_if f (KK.Atom (j0 + 1)) (KK.Atom j0)
+(* kodkod_constrs -> rep -> KK.formula -> KK.rel_expr *)
 fun rel_expr_from_formula kk R f =
   case unopt_rep R of
     Atom (2, j0) => atom_from_formula kk j0 f
   | _ => raise REP ("Nitpick_Kodkod.rel_expr_from_formula", [R])
 
-(* kodkod_cotrs -> int -> int -> Kodkod.rel_expr -> Kodkod.rel_expr list *)
+(* kodkod_cotrs -> int -> int -> KK.rel_expr -> KK.rel_expr list *)
 fun unpack_vect_in_chunks ({kk_project_seq, ...} : kodkod_constrs) chunk_arity
                           num_chunks r =
   List.tabulate (num_chunks, fn j => kk_project_seq r (j * chunk_arity)
                                                     chunk_arity)
 
-(* kodkod_constrs -> bool -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr
-   -> Kodkod.rel_expr *)
+(* kodkod_constrs -> bool -> rep -> rep -> KK.rel_expr -> KK.rel_expr
+   -> KK.rel_expr *)
 fun kk_n_fold_join
         (kk as {kk_intersect, kk_product, kk_join, kk_project_seq, ...}) one R1
         res_R r1 r2 =
@@ -479,8 +475,8 @@
             arity1 (arity_of_rep res_R)
     end
 
-(* kodkod_constrs -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr list
-   -> Kodkod.rel_expr list -> Kodkod.rel_expr *)
+(* kodkod_constrs -> rep -> rep -> KK.rel_expr -> KK.rel_expr list
+   -> KK.rel_expr list -> KK.rel_expr *)
 fun kk_case_switch (kk as {kk_union, kk_product, ...}) R1 R2 r rs1 rs2 =
   if rs1 = rs2 then r
   else kk_n_fold_join kk true R1 R2 r (fold1 kk_union (map2 kk_product rs1 rs2))
@@ -488,7 +484,7 @@
 val lone_rep_fallback_max_card = 4096
 val some_j0 = 0
 
-(* kodkod_constrs -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> rep -> rep -> KK.rel_expr -> KK.rel_expr *)
 fun lone_rep_fallback kk new_R old_R r =
   if old_R = new_R then
     r
@@ -505,7 +501,7 @@
       else
         raise REP ("Nitpick_Kodkod.lone_rep_fallback", [old_R, new_R])
     end
-(* kodkod_constrs -> int * int -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> int * int -> rep -> KK.rel_expr -> KK.rel_expr *)
 and atom_from_rel_expr kk (x as (k, j0)) old_R r =
   case old_R of
     Func (R1, R2) =>
@@ -518,7 +514,7 @@
     end
   | Opt _ => raise REP ("Nitpick_Kodkod.atom_from_rel_expr", [old_R])
   | _ => lone_rep_fallback kk (Atom x) old_R r
-(* kodkod_constrs -> rep list -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> rep list -> rep -> KK.rel_expr -> KK.rel_expr *)
 and struct_from_rel_expr kk Rs old_R r =
   case old_R of
     Atom _ => lone_rep_fallback kk (Struct Rs) old_R r
@@ -542,7 +538,7 @@
         lone_rep_fallback kk (Struct Rs) old_R r
     end
   | _ => raise REP ("Nitpick_Kodkod.struct_from_rel_expr", [old_R])
-(* kodkod_constrs -> int -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> int -> rep -> rep -> KK.rel_expr -> KK.rel_expr *)
 and vect_from_rel_expr kk k R old_R r =
   case old_R of
     Atom _ => lone_rep_fallback kk (Vect (k, R)) old_R r
@@ -565,7 +561,7 @@
                                          (kk_n_fold_join kk true R1 R2 arg_r r))
                (all_singletons_for_rep R1))
   | _ => raise REP ("Nitpick_Kodkod.vect_from_rel_expr", [old_R])
-(* kodkod_constrs -> rep -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> rep -> rep -> rep -> KK.rel_expr -> KK.rel_expr *)
 and func_from_no_opt_rel_expr kk R1 R2 (Atom x) r =
     let
       val dom_card = card_of_rep R1
@@ -594,9 +590,9 @@
        let
          val args_rs = all_singletons_for_rep R1
          val vals_rs = unpack_vect_in_chunks kk 1 k r
-         (* Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+         (* KK.rel_expr -> KK.rel_expr -> KK.rel_expr *)
          fun empty_or_singleton_set_for arg_r val_r =
-           #kk_join kk val_r (#kk_product kk (Kodkod.Atom (j0 + 1)) arg_r)
+           #kk_join kk val_r (#kk_product kk (KK.Atom (j0 + 1)) arg_r)
        in
          fold1 (#kk_union kk) (map2 empty_or_singleton_set_for args_rs vals_rs)
        end
@@ -613,11 +609,11 @@
            #kk_comprehension kk (decls_for_atom_schema ~1 schema) (kk_xeq r1 r)
          end
      | Func (Unit, (Atom (2, j0))) =>
-       #kk_rel_if kk (#kk_rel_eq kk r (Kodkod.Atom (j0 + 1)))
+       #kk_rel_if kk (#kk_rel_eq kk r (KK.Atom (j0 + 1)))
                   (full_rel_for_rep R1) (empty_rel_for_rep R1)
      | Func (R1', Atom (2, j0)) =>
        func_from_no_opt_rel_expr kk R1 (Formula Neut)
-           (Func (R1', Formula Neut)) (#kk_join kk r (Kodkod.Atom (j0 + 1)))
+           (Func (R1', Formula Neut)) (#kk_join kk r (KK.Atom (j0 + 1)))
      | _ => raise REP ("Nitpick_Kodkod.func_from_no_opt_rel_expr",
                        [old_R, Func (R1, Formula Neut)]))
   | func_from_no_opt_rel_expr kk R1 R2 old_R r =
@@ -633,14 +629,14 @@
          Atom (x as (2, j0)) =>
          let val schema = atom_schema_of_rep R1 in
            if length schema = 1 then
-             #kk_override kk (#kk_product kk (Kodkod.AtomSeq (hd schema))
-                                             (Kodkod.Atom j0))
-                             (#kk_product kk r (Kodkod.Atom (j0 + 1)))
+             #kk_override kk (#kk_product kk (KK.AtomSeq (hd schema))
+                                             (KK.Atom j0))
+                             (#kk_product kk r (KK.Atom (j0 + 1)))
            else
              let
                val r1 = fold1 (#kk_product kk) (unary_var_seq ~1 (length schema))
                         |> rel_expr_from_rel_expr kk R1' R1
-               val r2 = Kodkod.Var (1, ~(length schema) - 1)
+               val r2 = KK.Var (1, ~(length schema) - 1)
                val r3 = atom_from_formula kk j0 (#kk_subset kk r1 r)
              in
                #kk_comprehension kk (decls_for_atom_schema ~1 (schema @ [x]))
@@ -652,7 +648,7 @@
     | Func (Unit, R2') =>
       let val j0 = some_j0 in
         func_from_no_opt_rel_expr kk R1 R2 (Func (Atom (1, j0), R2'))
-                                  (#kk_product kk (Kodkod.Atom j0) r)
+                                  (#kk_product kk (KK.Atom j0) r)
       end
     | Func (R1', R2') =>
       if R1 = R1' andalso R2 = R2' then
@@ -677,7 +673,7 @@
         end
     | _ => raise REP ("Nitpick_Kodkod.func_from_no_opt_rel_expr",
                       [old_R, Func (R1, R2)])
-(* kodkod_constrs -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> rep -> rep -> KK.rel_expr -> KK.rel_expr *)
 and rel_expr_from_rel_expr kk new_R old_R r =
   let
     val unopt_old_R = unopt_rep old_R
@@ -697,43 +693,43 @@
                          [old_R, new_R]))
           unopt_old_R r
   end
-(* kodkod_constrs -> rep -> rep -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> rep -> rep -> rep -> KK.rel_expr -> KK.rel_expr *)
 and rel_expr_to_func kk R1 R2 = rel_expr_from_rel_expr kk (Func (R1, R2))
 
-(* kodkod_constrs -> typ -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+(* kodkod_constrs -> typ -> KK.rel_expr -> KK.rel_expr *)
 fun bit_set_from_atom ({kk_join, ...} : kodkod_constrs) T r =
-  kk_join r (Kodkod.Rel (if T = @{typ "unsigned_bit word"} then
-                           unsigned_bit_word_sel_rel
-                         else
-                           signed_bit_word_sel_rel))
-(* kodkod_constrs -> typ -> Kodkod.rel_expr -> Kodkod.int_expr *)
-val int_expr_from_atom = Kodkod.SetSum ooo bit_set_from_atom
-(* kodkod_constrs -> typ -> rep -> Kodkod.int_expr -> Kodkod.rel_expr *)
+  kk_join r (KK.Rel (if T = @{typ "unsigned_bit word"} then
+                       unsigned_bit_word_sel_rel
+                     else
+                       signed_bit_word_sel_rel))
+(* kodkod_constrs -> typ -> KK.rel_expr -> KK.int_expr *)
+val int_expr_from_atom = KK.SetSum ooo bit_set_from_atom
+(* kodkod_constrs -> typ -> rep -> KK.int_expr -> KK.rel_expr *)
 fun atom_from_int_expr (kk as {kk_rel_eq, kk_comprehension, ...}
                         : kodkod_constrs) T R i =
   kk_comprehension (decls_for_atom_schema ~1 (atom_schema_of_rep R))
-                   (kk_rel_eq (bit_set_from_atom kk T (Kodkod.Var (1, ~1)))
-                              (Kodkod.Bits i))
+                   (kk_rel_eq (bit_set_from_atom kk T (KK.Var (1, ~1)))
+                              (KK.Bits i))
 
-(* kodkod_constrs -> nut -> Kodkod.formula *)
+(* kodkod_constrs -> nut -> KK.formula *)
 fun declarative_axiom_for_plain_rel kk (FreeRel (x, _, R as Func _, nick)) =
     kk_n_ary_function kk (R |> nick = @{const_name List.set} ? unopt_rep)
-                      (Kodkod.Rel x)
+                      (KK.Rel x)
   | declarative_axiom_for_plain_rel ({kk_lone, kk_one, ...} : kodkod_constrs)
                                     (FreeRel (x, _, R, _)) =
-    if is_one_rep R then kk_one (Kodkod.Rel x)
-    else if is_lone_rep R andalso card_of_rep R > 1 then kk_lone (Kodkod.Rel x)
-    else Kodkod.True
+    if is_one_rep R then kk_one (KK.Rel x)
+    else if is_lone_rep R andalso card_of_rep R > 1 then kk_lone (KK.Rel x)
+    else KK.True
   | declarative_axiom_for_plain_rel _ u =
     raise NUT ("Nitpick_Kodkod.declarative_axiom_for_plain_rel", [u])
 
-(* nut NameTable.table -> styp -> Kodkod.rel_expr * rep * int *)
+(* nut NameTable.table -> styp -> KK.rel_expr * rep * int *)
 fun const_triple rel_table (x as (s, T)) =
   case the_name rel_table (ConstName (s, T, Any)) of
-    FreeRel ((n, j), _, R, _) => (Kodkod.Rel (n, j), R, n)
+    FreeRel ((n, j), _, R, _) => (KK.Rel (n, j), R, n)
   | _ => raise TERM ("Nitpick_Kodkod.const_triple", [Const x])
 
-(* nut NameTable.table -> styp -> Kodkod.rel_expr *)
+(* nut NameTable.table -> styp -> KK.rel_expr *)
 fun discr_rel_expr rel_table = #1 o const_triple rel_table o discr_for_constr
 
 (* extended_context -> kodkod_constrs -> nut NameTable.table -> dtype_spec list
@@ -747,7 +743,7 @@
   in
     map_filter (fn (j, T) =>
                    if forall (not_equal T o #typ) dtypes then NONE
-                   else SOME (kk_project r (map Kodkod.Num [0, j]), T))
+                   else SOME (kk_project r (map KK.Num [0, j]), T))
                (index_seq 1 (arity - 1) ~~ tl type_schema)
   end
 (* extended_context -> kodkod_constrs -> nut NameTable.table -> dtype_spec list
@@ -763,28 +759,28 @@
     SOME (typ, maps (nfa_transitions_for_constr ext_ctxt kk rel_table dtypes
                      o #const) constrs)
 
-val empty_rel = Kodkod.Product (Kodkod.None, Kodkod.None)
+val empty_rel = KK.Product (KK.None, KK.None)
 
-(* nfa_table -> typ -> typ -> Kodkod.rel_expr list *)
+(* nfa_table -> typ -> typ -> KK.rel_expr list *)
 fun direct_path_rel_exprs nfa start final =
   case AList.lookup (op =) nfa final of
     SOME trans => map fst (filter (curry (op =) start o snd) trans)
   | NONE => []
-(* kodkod_constrs -> nfa_table -> typ list -> typ -> typ -> Kodkod.rel_expr *)
+(* kodkod_constrs -> nfa_table -> typ list -> typ -> typ -> KK.rel_expr *)
 and any_path_rel_expr ({kk_union, ...} : kodkod_constrs) nfa [] start final =
     fold kk_union (direct_path_rel_exprs nfa start final)
-         (if start = final then Kodkod.Iden else empty_rel)
+         (if start = final then KK.Iden else empty_rel)
   | any_path_rel_expr (kk as {kk_union, ...}) nfa (q :: qs) start final =
     kk_union (any_path_rel_expr kk nfa qs start final)
              (knot_path_rel_expr kk nfa qs start q final)
 (* kodkod_constrs -> nfa_table -> typ list -> typ -> typ -> typ
-   -> Kodkod.rel_expr *)
+   -> KK.rel_expr *)
 and knot_path_rel_expr (kk as {kk_join, kk_reflexive_closure, ...}) nfa qs start
                        knot final =
   kk_join (kk_join (any_path_rel_expr kk nfa qs knot final)
                    (kk_reflexive_closure (loop_path_rel_expr kk nfa qs knot)))
           (any_path_rel_expr kk nfa qs start knot)
-(* kodkod_constrs -> nfa_table -> typ list -> typ -> Kodkod.rel_expr *)
+(* kodkod_constrs -> nfa_table -> typ list -> typ -> KK.rel_expr *)
 and loop_path_rel_expr ({kk_union, ...} : kodkod_constrs) nfa [] start =
     fold kk_union (direct_path_rel_exprs nfa start start) empty_rel
   | loop_path_rel_expr (kk as {kk_union, kk_closure, ...}) nfa (q :: qs) start =
@@ -812,12 +808,12 @@
   nfa |> graph_for_nfa |> NfaGraph.strong_conn
       |> map (fn keys => filter (member (op =) keys o fst) nfa)
 
-(* dtype_spec list -> kodkod_constrs -> nfa_table -> typ -> Kodkod.formula *)
+(* dtype_spec list -> kodkod_constrs -> nfa_table -> typ -> KK.formula *)
 fun acyclicity_axiom_for_datatype dtypes kk nfa start =
   #kk_no kk (#kk_intersect kk
-                 (loop_path_rel_expr kk nfa (map fst nfa) start) Kodkod.Iden)
+                 (loop_path_rel_expr kk nfa (map fst nfa) start) KK.Iden)
 (* extended_context -> kodkod_constrs -> nut NameTable.table -> dtype_spec list
-   -> Kodkod.formula list *)
+   -> KK.formula list *)
 fun acyclicity_axioms_for_datatypes ext_ctxt kk rel_table dtypes =
   map_filter (nfa_entry_for_datatype ext_ctxt kk rel_table dtypes) dtypes
   |> strongly_connected_sub_nfas
@@ -825,7 +821,7 @@
                          nfa)
 
 (* extended_context -> int -> kodkod_constrs -> nut NameTable.table
-   -> Kodkod.rel_expr -> constr_spec -> int -> Kodkod.formula *)
+   -> KK.rel_expr -> constr_spec -> int -> KK.formula *)
 fun sel_axiom_for_sel ext_ctxt j0
         (kk as {kk_all, kk_implies, kk_formula_if, kk_subset, kk_rel_eq, kk_no,
                 kk_join, ...}) rel_table dom_r
@@ -840,15 +836,14 @@
     if exclusive then
       kk_n_ary_function kk (Func (Atom z, R2)) r
     else
-      let val r' = kk_join (Kodkod.Var (1, 0)) r in
-        kk_all [Kodkod.DeclOne ((1, 0), Kodkod.AtomSeq z)]
-               (kk_formula_if (kk_subset (Kodkod.Var (1, 0)) dom_r)
-                              (kk_n_ary_function kk R2 r')
-                              (kk_no r'))
+      let val r' = kk_join (KK.Var (1, 0)) r in
+        kk_all [KK.DeclOne ((1, 0), KK.AtomSeq z)]
+               (kk_formula_if (kk_subset (KK.Var (1, 0)) dom_r)
+                              (kk_n_ary_function kk R2 r') (kk_no r'))
       end
   end
 (* extended_context -> int -> int -> kodkod_constrs -> nut NameTable.table
-   -> constr_spec -> Kodkod.formula list *)
+   -> constr_spec -> KK.formula list *)
 fun sel_axioms_for_constr ext_ctxt bits j0 kk rel_table
         (constr as {const, delta, epsilon, explicit_max, ...}) =
   let
@@ -862,9 +857,9 @@
         val ran_r = discr_rel_expr rel_table const
         val max_axiom =
           if honors_explicit_max then
-            Kodkod.True
+            KK.True
           else if is_twos_complement_representable bits (epsilon - delta) then
-            Kodkod.LE (Kodkod.Cardinality ran_r, Kodkod.Num explicit_max)
+            KK.LE (KK.Cardinality ran_r, KK.Num explicit_max)
           else
             raise TOO_SMALL ("Nitpick_Kodkod.sel_axioms_for_constr",
                              "\"bits\" value " ^ string_of_int bits ^
@@ -876,21 +871,20 @@
       end
   end
 (* extended_context -> int -> int -> kodkod_constrs -> nut NameTable.table
-   -> dtype_spec -> Kodkod.formula list *)
+   -> dtype_spec -> KK.formula list *)
 fun sel_axioms_for_datatype ext_ctxt bits j0 kk rel_table
                             ({constrs, ...} : dtype_spec) =
   maps (sel_axioms_for_constr ext_ctxt bits j0 kk rel_table) constrs
 
 (* extended_context -> kodkod_constrs -> nut NameTable.table -> constr_spec
-   -> Kodkod.formula list *)
+   -> KK.formula list *)
 fun uniqueness_axiom_for_constr ext_ctxt
         ({kk_all, kk_implies, kk_and, kk_rel_eq, kk_lone, kk_join, ...}
          : kodkod_constrs) rel_table ({const, ...} : constr_spec) =
   let
-    (* Kodkod.rel_expr -> Kodkod.formula *)
+    (* KK.rel_expr -> KK.formula *)
     fun conjunct_for_sel r =
-      kk_rel_eq (kk_join (Kodkod.Var (1, 0)) r)
-                (kk_join (Kodkod.Var (1, 1)) r)
+      kk_rel_eq (kk_join (KK.Var (1, 0)) r) (kk_join (KK.Var (1, 1)) r)
     val num_sels = num_sels_for_constr_type (snd const)
     val triples = map (const_triple rel_table
                        o boxed_nth_sel_for_constr ext_ctxt const)
@@ -904,13 +898,13 @@
     if num_sels = 0 then
       kk_lone set_r
     else
-      kk_all (map (Kodkod.DeclOne o rpair set_r o pair 1) [0, 1])
+      kk_all (map (KK.DeclOne o rpair set_r o pair 1) [0, 1])
              (kk_implies
                   (fold1 kk_and (map (conjunct_for_sel o #1) (tl triples)))
-                  (kk_rel_eq (Kodkod.Var (1, 0)) (Kodkod.Var (1, 1))))
+                  (kk_rel_eq (KK.Var (1, 0)) (KK.Var (1, 1))))
   end
 (* extended_context -> kodkod_constrs -> nut NameTable.table -> dtype_spec
-   -> Kodkod.formula list *)
+   -> KK.formula list *)
 fun uniqueness_axioms_for_datatype ext_ctxt kk rel_table
                                    ({constrs, ...} : dtype_spec) =
   map (uniqueness_axiom_for_constr ext_ctxt kk rel_table) constrs
@@ -918,7 +912,7 @@
 (* constr_spec -> int *)
 fun effective_constr_max ({delta, epsilon, ...} : constr_spec) = epsilon - delta
 (* int -> kodkod_constrs -> nut NameTable.table -> dtype_spec
-   -> Kodkod.formula list *)
+   -> KK.formula list *)
 fun partition_axioms_for_datatype j0 (kk as {kk_rel_eq, kk_union, ...})
                                   rel_table
                                   ({card, constrs, ...} : dtype_spec) =
@@ -926,12 +920,12 @@
     [Integer.sum (map effective_constr_max constrs) = card |> formula_for_bool]
   else
     let val rs = map (discr_rel_expr rel_table o #const) constrs in
-      [kk_rel_eq (fold1 kk_union rs) (Kodkod.AtomSeq (card, j0)),
+      [kk_rel_eq (fold1 kk_union rs) (KK.AtomSeq (card, j0)),
        kk_disjoint_sets kk rs]
     end
 
 (* extended_context -> int -> int Typtab.table -> kodkod_constrs
-   -> nut NameTable.table -> dtype_spec -> Kodkod.formula list *)
+   -> nut NameTable.table -> dtype_spec -> KK.formula list *)
 fun other_axioms_for_datatype _ _ _ _ _ {shallow = true, ...} = []
   | other_axioms_for_datatype ext_ctxt bits ofs kk rel_table
                               (dtype as {typ, ...}) =
@@ -942,12 +936,12 @@
     end
 
 (* extended_context -> int -> int Typtab.table -> kodkod_constrs
-   -> nut NameTable.table -> dtype_spec list -> Kodkod.formula list *)
+   -> nut NameTable.table -> dtype_spec list -> KK.formula list *)
 fun declarative_axioms_for_datatypes ext_ctxt bits ofs kk rel_table dtypes =
   acyclicity_axioms_for_datatypes ext_ctxt kk rel_table dtypes @
   maps (other_axioms_for_datatype ext_ctxt bits ofs kk rel_table) dtypes
 
-(* int -> int Typtab.table -> bool -> kodkod_constrs -> nut -> Kodkod.formula *)
+(* int -> int Typtab.table -> bool -> kodkod_constrs -> nut -> KK.formula *)
 fun kodkod_formula_from_nut bits ofs liberal
         (kk as {kk_all, kk_exist, kk_formula_let, kk_formula_if, kk_or, kk_not,
                 kk_iff, kk_implies, kk_and, kk_subset, kk_rel_eq, kk_no, kk_one,
@@ -959,20 +953,20 @@
     val main_j0 = offset_of_type ofs bool_T
     val bool_j0 = main_j0
     val bool_atom_R = Atom (2, main_j0)
-    val false_atom = Kodkod.Atom bool_j0
-    val true_atom = Kodkod.Atom (bool_j0 + 1)
+    val false_atom = KK.Atom bool_j0
+    val true_atom = KK.Atom (bool_j0 + 1)
 
-    (* polarity -> int -> Kodkod.rel_expr -> Kodkod.formula *)
+    (* polarity -> int -> KK.rel_expr -> KK.formula *)
     fun formula_from_opt_atom polar j0 r =
       case polar of
-        Neg => kk_not (kk_rel_eq r (Kodkod.Atom j0))
-      | _ => kk_rel_eq r (Kodkod.Atom (j0 + 1))
-    (* int -> Kodkod.rel_expr -> Kodkod.formula *)
+        Neg => kk_not (kk_rel_eq r (KK.Atom j0))
+      | _ => kk_rel_eq r (KK.Atom (j0 + 1))
+    (* int -> KK.rel_expr -> KK.formula *)
     val formula_from_atom = formula_from_opt_atom Pos
 
-    (* Kodkod.formula -> Kodkod.formula -> Kodkod.formula *)
+    (* KK.formula -> KK.formula -> KK.formula *)
     fun kk_notimplies f1 f2 = kk_and f1 (kk_not f2)
-    (* Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+    (* KK.rel_expr -> KK.rel_expr -> KK.rel_expr *)
     val kk_or3 =
       double_rel_rel_let kk
           (fn r1 => fn r2 =>
@@ -985,27 +979,27 @@
                         (kk_intersect r1 r2))
     fun kk_notimplies3 r1 r2 = kk_and3 r1 (kk_not3 r2)
 
-    (* int -> Kodkod.rel_expr -> Kodkod.formula list *)
+    (* int -> KK.rel_expr -> KK.formula list *)
     val unpack_formulas =
       map (formula_from_atom bool_j0) oo unpack_vect_in_chunks kk 1
-    (* (Kodkod.formula -> Kodkod.formula -> Kodkod.formula) -> int
-       -> Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+    (* (KK.formula -> KK.formula -> KK.formula) -> int -> KK.rel_expr
+       -> KK.rel_expr -> KK.rel_expr *)
     fun kk_vect_set_op connective k r1 r2 =
       fold1 kk_product (map2 (atom_from_formula kk bool_j0 oo connective)
                              (unpack_formulas k r1) (unpack_formulas k r2))
-    (* (Kodkod.formula -> Kodkod.formula -> Kodkod.formula) -> int
-       -> Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.formula *)
+    (* (KK.formula -> KK.formula -> KK.formula) -> int -> KK.rel_expr
+       -> KK.rel_expr -> KK.formula *)
     fun kk_vect_set_bool_op connective k r1 r2 =
       fold1 kk_and (map2 connective (unpack_formulas k r1)
                          (unpack_formulas k r2))
 
-    (* nut -> Kodkod.formula *)
+    (* nut -> KK.formula *)
     fun to_f u =
       case rep_of u of
         Formula polar =>
         (case u of
-           Cst (False, _, _) => Kodkod.False
-         | Cst (True, _, _) => Kodkod.True
+           Cst (False, _, _) => KK.False
+         | Cst (True, _, _) => KK.True
          | Op1 (Not, _, _, u1) =>
            kk_not (to_f_with_polarity (flip_polarity polar) u1)
          | Op1 (Finite, _, _, u1) =>
@@ -1014,9 +1008,9 @@
                Neut => if opt1 then
                          raise NUT ("Nitpick_Kodkod.to_f (Finite)", [u])
                        else
-                         Kodkod.True
+                         KK.True
              | Pos => formula_for_bool (not opt1)
-             | Neg => Kodkod.True
+             | Neg => KK.True
            end
          | Op1 (Cast, _, _, u1) => to_f_with_polarity polar u1
          | Op2 (All, _, _, u1, u2) =>
@@ -1052,7 +1046,7 @@
              else
                let
                  (* FIXME: merge with similar code below *)
-                 (* bool -> nut -> Kodkod.rel_expr *)
+                 (* bool -> nut -> KK.rel_expr *)
                  fun set_to_r widen u =
                    if widen then
                      kk_difference (full_rel_for_rep dom_R)
@@ -1065,7 +1059,7 @@
            end
          | Op2 (DefEq, _, _, u1, u2) =>
            (case min_rep (rep_of u1) (rep_of u2) of
-              Unit => Kodkod.True
+              Unit => KK.True
             | Formula polar =>
               kk_iff (to_f_with_polarity polar u1) (to_f_with_polarity polar u2)
             | min_R =>
@@ -1085,7 +1079,7 @@
               end)
          | Op2 (Eq, T, R, u1, u2) =>
            (case min_rep (rep_of u1) (rep_of u2) of
-              Unit => Kodkod.True
+              Unit => KK.True
             | Formula polar =>
               kk_iff (to_f_with_polarity polar u1) (to_f_with_polarity polar u2)
             | min_R =>
@@ -1114,7 +1108,7 @@
                      else
                        if is_lone_rep min_R then
                          if arity_of_rep min_R = 1 then
-                           kk_subset (kk_product r1 r2) Kodkod.Iden
+                           kk_subset (kk_product r1 r2) KK.Iden
                          else if not both_opt then
                            (r1, r2) |> is_opt_rep (rep_of u2) ? swap
                                     |-> kk_subset
@@ -1139,8 +1133,8 @@
                       val rs2 = unpack_products r2
                     in
                       if length rs1 = length rs2
-                         andalso map Kodkod.arity_of_rel_expr rs1
-                                 = map Kodkod.arity_of_rel_expr rs2 then
+                         andalso map KK.arity_of_rel_expr rs1
+                                 = map KK.arity_of_rel_expr rs2 then
                         fold1 kk_and (map2 kk_subset rs1 rs2)
                       else
                         kk_subset r1 r2
@@ -1165,26 +1159,25 @@
          | Op3 (If, _, _, u1, u2, u3) =>
            kk_formula_if (to_f u1) (to_f_with_polarity polar u2)
                          (to_f_with_polarity polar u3)
-         | FormulaReg (j, _, _) => Kodkod.FormulaReg j
+         | FormulaReg (j, _, _) => KK.FormulaReg j
          | _ => raise NUT ("Nitpick_Kodkod.to_f", [u]))
       | Atom (2, j0) => formula_from_atom j0 (to_r u)
       | _ => raise NUT ("Nitpick_Kodkod.to_f", [u])
-    (* polarity -> nut -> Kodkod.formula *)
+    (* polarity -> nut -> KK.formula *)
     and to_f_with_polarity polar u =
       case rep_of u of
         Formula _ => to_f u
       | Atom (2, j0) => formula_from_atom j0 (to_r u)
       | Opt (Atom (2, j0)) => formula_from_opt_atom polar j0 (to_r u)
       | _ => raise NUT ("Nitpick_Kodkod.to_f_with_polarity", [u])
-    (* nut -> Kodkod.rel_expr *)
+    (* nut -> KK.rel_expr *)
     and to_r u =
       case u of
         Cst (False, _, Atom _) => false_atom
       | Cst (True, _, Atom _) => true_atom
       | Cst (Iden, T, Func (Struct [R1, R2], Formula Neut)) =>
         if R1 = R2 andalso arity_of_rep R1 = 1 then
-          kk_intersect Kodkod.Iden (kk_product (full_rel_for_rep R1)
-                                               Kodkod.Univ)
+          kk_intersect KK.Iden (kk_product (full_rel_for_rep R1) KK.Univ)
         else
           let
             val schema1 = atom_schema_of_rep R1
@@ -1200,106 +1193,100 @@
                 (kk_rel_eq (rel_expr_from_rel_expr kk min_R R1 r1)
                            (rel_expr_from_rel_expr kk min_R R2 r2))
           end
-      | Cst (Iden, T, Func (Atom (1, j0), Formula Neut)) => Kodkod.Atom j0
+      | Cst (Iden, T, Func (Atom (1, j0), Formula Neut)) => KK.Atom j0
       | Cst (Iden, T as Type ("fun", [T1, _]), R as Func (R1, _)) =>
         to_rep R (Cst (Iden, T, Func (one_rep ofs T1 R1, Formula Neut)))
       | Cst (Num j, T, R) =>
         if is_word_type T then
-          atom_from_int_expr kk T R (Kodkod.Num j)
+          atom_from_int_expr kk T R (KK.Num j)
         else if T = int_T then
           case atom_for_int (card_of_rep R, offset_of_type ofs int_T) j of
-            ~1 => if is_opt_rep R then Kodkod.None
+            ~1 => if is_opt_rep R then KK.None
                   else raise NUT ("Nitpick_Kodkod.to_r (Num)", [u])
-          | j' => Kodkod.Atom j'
+          | j' => KK.Atom j'
         else
-          if j < card_of_rep R then Kodkod.Atom (j + offset_of_type ofs T)
-          else if is_opt_rep R then Kodkod.None
+          if j < card_of_rep R then KK.Atom (j + offset_of_type ofs T)
+          else if is_opt_rep R then KK.None
           else raise NUT ("Nitpick_Kodkod.to_r (Num)", [u])
       | Cst (Unknown, _, R) => empty_rel_for_rep R
       | Cst (Unrep, _, R) => empty_rel_for_rep R
-      | Cst (Suc, T, Func (Atom x, _)) =>
-        if domain_type T <> nat_T then
-          Kodkod.Rel suc_rel
-        else
-          kk_intersect (Kodkod.Rel suc_rel)
-                       (kk_product Kodkod.Univ (Kodkod.AtomSeq x))
-      | Cst (Add, Type ("fun", [@{typ nat}, _]), _) => Kodkod.Rel nat_add_rel
-      | Cst (Add, Type ("fun", [@{typ int}, _]), _) => Kodkod.Rel int_add_rel
+      | Cst (Suc, T as @{typ "unsigned_bit word => unsigned_bit word"}, R) =>
+        to_bit_word_unary_op T R (curry KK.Add (KK.Num 1))
+      | Cst (Suc, @{typ "nat => nat"}, Func (Atom x, _)) =>
+        kk_intersect (KK.Rel suc_rel) (kk_product KK.Univ (KK.AtomSeq x))
+      | Cst (Suc, _, Func (Atom x, _)) => KK.Rel suc_rel
+      | Cst (Add, Type ("fun", [@{typ nat}, _]), _) => KK.Rel nat_add_rel
+      | Cst (Add, Type ("fun", [@{typ int}, _]), _) => KK.Rel int_add_rel
       | Cst (Add, T as Type ("fun", [@{typ "unsigned_bit word"}, _]), R) =>
-        to_bit_word_binary_op T R NONE (SOME (curry Kodkod.Add))
+        to_bit_word_binary_op T R NONE (SOME (curry KK.Add))
       | Cst (Add, T as Type ("fun", [@{typ "signed_bit word"}, _]), R) =>
         to_bit_word_binary_op T R
             (SOME (fn i1 => fn i2 => fn i3 =>
-                 kk_implies (Kodkod.LE (Kodkod.Num 0, Kodkod.BitXor (i1, i2)))
-                            (Kodkod.LE (Kodkod.Num 0, Kodkod.BitXor (i2, i3)))))
-            (SOME (curry Kodkod.Add))
+                 kk_implies (KK.LE (KK.Num 0, KK.BitXor (i1, i2)))
+                            (KK.LE (KK.Num 0, KK.BitXor (i2, i3)))))
+            (SOME (curry KK.Add))
       | Cst (Subtract, Type ("fun", [@{typ nat}, _]), _) =>
-        Kodkod.Rel nat_subtract_rel
+        KK.Rel nat_subtract_rel
       | Cst (Subtract, Type ("fun", [@{typ int}, _]), _) =>
-        Kodkod.Rel int_subtract_rel
+        KK.Rel int_subtract_rel
       | Cst (Subtract, T as Type ("fun", [@{typ "unsigned_bit word"}, _]), R) =>
         to_bit_word_binary_op T R NONE
             (SOME (fn i1 => fn i2 =>
-                      Kodkod.IntIf (Kodkod.LE (i1, i2), Kodkod.Num 0,
-                                    Kodkod.Sub (i1, i2))))
+                      KK.IntIf (KK.LE (i1, i2), KK.Num 0, KK.Sub (i1, i2))))
       | Cst (Subtract, T as Type ("fun", [@{typ "signed_bit word"}, _]), R) =>
         to_bit_word_binary_op T R
             (SOME (fn i1 => fn i2 => fn i3 =>
-                 kk_implies (Kodkod.LT (Kodkod.BitXor (i1, i2), Kodkod.Num 0))
-                            (Kodkod.LT (Kodkod.BitXor (i2, i3), Kodkod.Num 0))))
-            (SOME (curry Kodkod.Sub))
+                 kk_implies (KK.LT (KK.BitXor (i1, i2), KK.Num 0))
+                            (KK.LT (KK.BitXor (i2, i3), KK.Num 0))))
+            (SOME (curry KK.Sub))
       | Cst (Multiply, Type ("fun", [@{typ nat}, _]), _) =>
-        Kodkod.Rel nat_multiply_rel
+        KK.Rel nat_multiply_rel
       | Cst (Multiply, Type ("fun", [@{typ int}, _]), _) =>
-        Kodkod.Rel int_multiply_rel
+        KK.Rel int_multiply_rel
       | Cst (Multiply,
              T as Type ("fun", [Type (@{type_name word}, [bit_T]), _]), R) =>
         to_bit_word_binary_op T R
             (SOME (fn i1 => fn i2 => fn i3 =>
-                kk_or (Kodkod.IntEq (i2, Kodkod.Num 0))
-                      (Kodkod.IntEq (Kodkod.Div (i3, i2), i1)
+                kk_or (KK.IntEq (i2, KK.Num 0))
+                      (KK.IntEq (KK.Div (i3, i2), i1)
                        |> bit_T = @{typ signed_bit}
-                          ? kk_and (Kodkod.LE (Kodkod.Num 0,
-                                          foldl1 Kodkod.BitAnd [i1, i2, i3])))))
-            (SOME (curry Kodkod.Mult))
-      | Cst (Divide, Type ("fun", [@{typ nat}, _]), _) =>
-        Kodkod.Rel nat_divide_rel
-      | Cst (Divide, Type ("fun", [@{typ int}, _]), _) =>
-        Kodkod.Rel int_divide_rel
+                          ? kk_and (KK.LE (KK.Num 0,
+                                           foldl1 KK.BitAnd [i1, i2, i3])))))
+            (SOME (curry KK.Mult))
+      | Cst (Divide, Type ("fun", [@{typ nat}, _]), _) => KK.Rel nat_divide_rel
+      | Cst (Divide, Type ("fun", [@{typ int}, _]), _) => KK.Rel int_divide_rel
       | Cst (Divide, T as Type ("fun", [@{typ "unsigned_bit word"}, _]), R) =>
         to_bit_word_binary_op T R NONE
             (SOME (fn i1 => fn i2 =>
-                      Kodkod.IntIf (Kodkod.IntEq (i2, Kodkod.Num 0),
-                                    Kodkod.Num 0, Kodkod.Div (i1, i2))))
+                      KK.IntIf (KK.IntEq (i2, KK.Num 0),
+                                KK.Num 0, KK.Div (i1, i2))))
       | Cst (Divide, T as Type ("fun", [@{typ "signed_bit word"}, _]), R) =>
         to_bit_word_binary_op T R
             (SOME (fn i1 => fn i2 => fn i3 =>
-                Kodkod.LE (Kodkod.Num 0, foldl1 Kodkod.BitAnd [i1, i2, i3])))
+                      KK.LE (KK.Num 0, foldl1 KK.BitAnd [i1, i2, i3])))
             (SOME (fn i1 => fn i2 =>
-                 Kodkod.IntIf (kk_and (Kodkod.LT (i1, Kodkod.Num 0))
-                                      (Kodkod.LT (Kodkod.Num 0, i2)),
-                     Kodkod.Sub (Kodkod.Div (Kodkod.Add (i1, Kodkod.Num 1), i2),
-                                 Kodkod.Num 1),
-                     Kodkod.IntIf (kk_and (Kodkod.LT (Kodkod.Num 0, i1))
-                                          (Kodkod.LT (i2, Kodkod.Num 0)),
-                         Kodkod.Sub (Kodkod.Div (Kodkod.Sub (i1, Kodkod.Num 1),
-                                                 i2), Kodkod.Num 1),
-                         Kodkod.IntIf (Kodkod.IntEq (i2, Kodkod.Num 0),
-                                       Kodkod.Num 0, Kodkod.Div (i1, i2))))))
-      | Cst (Gcd, _, _) => Kodkod.Rel gcd_rel
-      | Cst (Lcm, _, _) => Kodkod.Rel lcm_rel
-      | Cst (Fracs, _, Func (Atom (1, _), _)) => Kodkod.None
+                 KK.IntIf (kk_and (KK.LT (i1, KK.Num 0))
+                                  (KK.LT (KK.Num 0, i2)),
+                     KK.Sub (KK.Div (KK.Add (i1, KK.Num 1), i2), KK.Num 1),
+                     KK.IntIf (kk_and (KK.LT (KK.Num 0, i1))
+                                      (KK.LT (i2, KK.Num 0)),
+                         KK.Sub (KK.Div (KK.Sub (i1, KK.Num 1), i2), KK.Num 1),
+                         KK.IntIf (KK.IntEq (i2, KK.Num 0),
+                                   KK.Num 0, KK.Div (i1, i2))))))
+      | Cst (Gcd, _, _) => KK.Rel gcd_rel
+      | Cst (Lcm, _, _) => KK.Rel lcm_rel
+      | Cst (Fracs, _, Func (Atom (1, _), _)) => KK.None
       | Cst (Fracs, _, Func (Struct _, _)) =>
-        kk_project_seq (Kodkod.Rel norm_frac_rel) 2 2
-      | Cst (NormFrac, _, _) => Kodkod.Rel norm_frac_rel
+        kk_project_seq (KK.Rel norm_frac_rel) 2 2
+      | Cst (NormFrac, _, _) => KK.Rel norm_frac_rel
       | Cst (NatToInt, Type ("fun", [@{typ nat}, _]), Func (Atom _, Atom _)) =>
-        Kodkod.Iden
+        KK.Iden
       | Cst (NatToInt, Type ("fun", [@{typ nat}, _]),
              Func (Atom (nat_k, nat_j0), Opt (Atom (int_k, int_j0)))) =>
         if nat_j0 = int_j0 then
-          kk_intersect Kodkod.Iden
-              (kk_product (Kodkod.AtomSeq (max_int_for_card int_k + 1, nat_j0))
-                          Kodkod.Univ)
+          kk_intersect KK.Iden
+              (kk_product (KK.AtomSeq (max_int_for_card int_k + 1, nat_j0))
+                          KK.Univ)
         else
           raise BAD ("Nitpick_Kodkod.to_r (NatToInt)", "\"nat_j0 <> int_j0\"")
       | Cst (NatToInt, T as Type ("fun", [@{typ "unsigned_bit word"}, _]), R) =>
@@ -1312,21 +1299,19 @@
           val overlap = Int.min (nat_k, abs_card)
         in
           if nat_j0 = int_j0 then
-            kk_union (kk_product (Kodkod.AtomSeq (int_k - abs_card,
-                                                  int_j0 + abs_card))
-                                 (Kodkod.Atom nat_j0))
-                     (kk_intersect Kodkod.Iden
-                          (kk_product (Kodkod.AtomSeq (overlap, int_j0))
-                                      Kodkod.Univ))
+            kk_union (kk_product (KK.AtomSeq (int_k - abs_card,
+                                              int_j0 + abs_card))
+                                 (KK.Atom nat_j0))
+                     (kk_intersect KK.Iden
+                          (kk_product (KK.AtomSeq (overlap, int_j0)) KK.Univ))
           else
             raise BAD ("Nitpick_Kodkod.to_r (IntToNat)", "\"nat_j0 <> int_j0\"")
         end
       | Cst (IntToNat, T as Type ("fun", [@{typ "signed_bit word"}, _]), R) =>
         to_bit_word_unary_op T R
-            (fn i => Kodkod.IntIf (Kodkod.LE (i, Kodkod.Num 0),
-                                   Kodkod.Num 0, i))
+            (fn i => KK.IntIf (KK.LE (i, KK.Num 0), KK.Num 0, i))
       | Op1 (Not, _, R, u1) => kk_not3 (to_rep R u1)
-      | Op1 (Finite, _, Opt (Atom _), _) => Kodkod.None
+      | Op1 (Finite, _, Opt (Atom _), _) => KK.None
       | Op1 (Converse, T, R, u1) =>
         let
           val (b_T, a_T) = HOLogic.dest_prodT (domain_type T)
@@ -1346,9 +1331,9 @@
           val body_arity = arity_of_rep body_R
         in
           kk_project (to_rep (Func (Struct [a_R, b_R], body_R)) u1)
-                     (map Kodkod.Num (index_seq a_arity b_arity @
-                                      index_seq 0 a_arity @
-                                      index_seq ab_arity body_arity))
+                     (map KK.Num (index_seq a_arity b_arity @
+                                  index_seq 0 a_arity @
+                                  index_seq ab_arity body_arity))
           |> rel_expr_from_rel_expr kk R (Func (Struct [b_R, a_R], body_R))
         end
       | Op1 (Closure, _, R, u1) =>
@@ -1410,13 +1395,13 @@
       | Op2 (Exist, T, Opt _, u1, u2) =>
         let val rs1 = untuple to_decl u1 in
           if not (is_opt_rep (rep_of u2)) then
-            kk_rel_if (kk_exist rs1 (to_f u2)) true_atom Kodkod.None
+            kk_rel_if (kk_exist rs1 (to_f u2)) true_atom KK.None
           else
             let val r2 = to_r u2 in
               kk_union (kk_rel_if (kk_exist rs1 (kk_rel_eq r2 true_atom))
-                                  true_atom Kodkod.None)
+                                  true_atom KK.None)
                        (kk_rel_if (kk_all rs1 (kk_rel_eq r2 false_atom))
-                                  false_atom Kodkod.None)
+                                  false_atom KK.None)
             end
         end
       | Op2 (Or, _, _, u1, u2) =>
@@ -1437,10 +1422,10 @@
                         kk_rel_if
                             (fold kk_and (map_filter (fn (u, r) =>
                                  if is_opt_rep (rep_of u) then SOME (kk_some r)
-                                 else NONE) [(u1, r1), (u2, r2)]) Kodkod.True)
-                            (atom_from_formula kk bool_j0 (Kodkod.LT (pairself
+                                 else NONE) [(u1, r1), (u2, r2)]) KK.True)
+                            (atom_from_formula kk bool_j0 (KK.LT (pairself
                                 (int_expr_from_atom kk (type_of u1)) (r1, r2))))
-                            Kodkod.None)
+                            KK.None)
                     (to_r u1) (to_r u2))
       | Op2 (The, T, R, u1, u2) =>
         if is_opt_rep R then
@@ -1485,8 +1470,8 @@
           if f1 = f2 then
             atom_from_formula kk j0 f1
           else
-            kk_union (kk_rel_if f1 true_atom Kodkod.None)
-                     (kk_rel_if f2 Kodkod.None false_atom)
+            kk_union (kk_rel_if f1 true_atom KK.None)
+                     (kk_rel_if f2 KK.None false_atom)
         end
       | Op2 (Union, _, R, u1, u2) =>
         to_set_op kk_or kk_or3 kk_union kk_union kk_intersect false R u1 u2
@@ -1518,7 +1503,7 @@
            | Opt (Atom (2, _)) =>
              let
                (* FIXME: merge with similar code above *)
-               (* rep -> rep -> nut -> Kodkod.rel_expr *)
+               (* rep -> rep -> nut -> KK.rel_expr *)
                fun must R1 R2 u =
                  kk_join (to_rep (Func (Struct [R1, R2], body_R)) u) true_atom
                fun may R1 R2 u =
@@ -1553,9 +1538,9 @@
                         (to_rep (Func (b_R, Formula Neut)) u2)
            | Opt (Atom (2, _)) =>
              let
-               (* Kodkod.rel_expr -> rep -> nut -> Kodkod.rel_expr *)
+               (* KK.rel_expr -> rep -> nut -> KK.rel_expr *)
                fun do_nut r R u = kk_join (to_rep (Func (R, body_R)) u) r
-               (* Kodkod.rel_expr -> Kodkod.rel_expr *)
+               (* KK.rel_expr -> KK.rel_expr *)
                fun do_term r =
                  kk_product (kk_product (do_nut r a_R u1) (do_nut r b_R u2)) r
              in kk_union (do_term true_atom) (do_term false_atom) end
@@ -1567,7 +1552,7 @@
            (Func (R11, R12), Func (R21, Formula Neut)) =>
            if R21 = R11 andalso is_lone_rep R12 then
              let
-               (* Kodkod.rel_expr -> Kodkod.rel_expr *)
+               (* KK.rel_expr -> KK.rel_expr *)
                fun big_join r = kk_n_fold_join kk false R21 R12 r (to_r u1)
                val core_r = big_join (to_r u2)
                val core_R = Func (R12, Formula Neut)
@@ -1593,9 +1578,9 @@
       | Op2 (Apply, @{typ nat}, _,
              Op2 (Apply, _, _, Cst (Subtract, _, _), u1), u2) =>
         if is_Cst Unrep u2 andalso not (is_opt_rep (rep_of u1)) then
-          Kodkod.Atom (offset_of_type ofs nat_T)
+          KK.Atom (offset_of_type ofs nat_T)
         else
-          fold kk_join (map to_integer [u1, u2]) (Kodkod.Rel nat_subtract_rel)
+          fold kk_join (map to_integer [u1, u2]) (KK.Rel nat_subtract_rel)
       | Op2 (Apply, _, R, u1, u2) =>
         if is_Cst Unrep u2 andalso is_set_type (type_of u1)
            andalso is_FreeName u1 then
@@ -1603,7 +1588,7 @@
         else
           to_apply R u1 u2
       | Op2 (Lambda, T, R as Opt (Atom (1, j0)), u1, u2) =>
-        to_guard [u1, u2] R (Kodkod.Atom j0)
+        to_guard [u1, u2] R (KK.Atom j0)
       | Op2 (Lambda, T, Func (_, Formula Neut), u1, u2) =>
         kk_comprehension (untuple to_decl u1) (to_f u2)
       | Op2 (Lambda, T, Func (_, R2), u1, u2) =>
@@ -1639,10 +1624,9 @@
          | Vect (k, R) => to_product (replicate k R) us
          | Atom (1, j0) =>
            (case filter (not_equal Unit o rep_of) us of
-              [] => Kodkod.Atom j0
-            | us' =>
-              kk_rel_if (kk_some (fold1 kk_product (map to_r us')))
-                        (Kodkod.Atom j0) Kodkod.None)
+              [] => KK.Atom j0
+            | us' => kk_rel_if (kk_some (fold1 kk_product (map to_r us')))
+                               (KK.Atom j0) KK.None)
          | _ => raise NUT ("Nitpick_Kodkod.to_r (Tuple)", [u]))
       | Construct ([u'], _, _, []) => to_r u'
       | Construct (_ :: sel_us, T, R, arg_us) =>
@@ -1660,47 +1644,46 @@
                        else
                          kk_comprehension
                              (decls_for_atom_schema ~1 (atom_schema_of_rep R1))
-                             (kk_rel_eq (kk_join (Kodkod.Var (1, ~1)) sel_r)
-                                        arg_r)
+                             (kk_rel_eq (kk_join (KK.Var (1, ~1)) sel_r) arg_r)
                      end) sel_us arg_us
         in fold1 kk_intersect set_rs end
-      | BoundRel (x, _, _, _) => Kodkod.Var x
-      | FreeRel (x, _, _, _) => Kodkod.Rel x
-      | RelReg (j, _, R) => Kodkod.RelReg (arity_of_rep R, j)
+      | BoundRel (x, _, _, _) => KK.Var x
+      | FreeRel (x, _, _, _) => KK.Rel x
+      | RelReg (j, _, R) => KK.RelReg (arity_of_rep R, j)
       | u => raise NUT ("Nitpick_Kodkod.to_r", [u])
-    (* nut -> Kodkod.decl *)
+    (* nut -> KK.decl *)
     and to_decl (BoundRel (x, _, R, _)) =
-        Kodkod.DeclOne (x, Kodkod.AtomSeq (the_single (atom_schema_of_rep R)))
+        KK.DeclOne (x, KK.AtomSeq (the_single (atom_schema_of_rep R)))
       | to_decl u = raise NUT ("Nitpick_Kodkod.to_decl", [u])
-    (* nut -> Kodkod.expr_assign *)
+    (* nut -> KK.expr_assign *)
     and to_expr_assign (FormulaReg (j, _, R)) u =
-        Kodkod.AssignFormulaReg (j, to_f u)
+        KK.AssignFormulaReg (j, to_f u)
       | to_expr_assign (RelReg (j, _, R)) u =
-        Kodkod.AssignRelReg ((arity_of_rep R, j), to_r u)
+        KK.AssignRelReg ((arity_of_rep R, j), to_r u)
       | to_expr_assign u1 _ = raise NUT ("Nitpick_Kodkod.to_expr_assign", [u1])
-    (* int * int -> nut -> Kodkod.rel_expr *)
+    (* int * int -> nut -> KK.rel_expr *)
     and to_atom (x as (k, j0)) u =
       case rep_of u of
         Formula _ => atom_from_formula kk j0 (to_f u)
-      | Unit => if k = 1 then Kodkod.Atom j0
+      | Unit => if k = 1 then KK.Atom j0
                 else raise NUT ("Nitpick_Kodkod.to_atom", [u])
       | R => atom_from_rel_expr kk x R (to_r u)
-    (* rep list -> nut -> Kodkod.rel_expr *)
+    (* rep list -> nut -> KK.rel_expr *)
     and to_struct Rs u =
       case rep_of u of
         Unit => full_rel_for_rep (Struct Rs)
       | R' => struct_from_rel_expr kk Rs R' (to_r u)
-    (* int -> rep -> nut -> Kodkod.rel_expr *)
+    (* int -> rep -> nut -> KK.rel_expr *)
     and to_vect k R u =
       case rep_of u of
         Unit => full_rel_for_rep (Vect (k, R))
       | R' => vect_from_rel_expr kk k R R' (to_r u)
-    (* rep -> rep -> nut -> Kodkod.rel_expr *)
+    (* rep -> rep -> nut -> KK.rel_expr *)
     and to_func R1 R2 u =
       case rep_of u of
         Unit => full_rel_for_rep (Func (R1, R2))
       | R' => rel_expr_to_func kk R1 R2 R' (to_r u)
-    (* rep -> nut -> Kodkod.rel_expr *)
+    (* rep -> nut -> KK.rel_expr *)
     and to_opt R u =
       let val old_R = rep_of u in
         if is_opt_rep old_R then
@@ -1708,16 +1691,16 @@
         else
           to_rep R u
       end
-    (* rep -> nut -> Kodkod.rel_expr *)
+    (* rep -> nut -> KK.rel_expr *)
     and to_rep (Atom x) u = to_atom x u
       | to_rep (Struct Rs) u = to_struct Rs u
       | to_rep (Vect (k, R)) u = to_vect k R u
       | to_rep (Func (R1, R2)) u = to_func R1 R2 u
       | to_rep (Opt R) u = to_opt R u
       | to_rep R _ = raise REP ("Nitpick_Kodkod.to_rep", [R])
-    (* nut -> Kodkod.rel_expr *)
+    (* nut -> KK.rel_expr *)
     and to_integer u = to_opt (one_rep ofs (type_of u) (rep_of u)) u
-    (* nut list -> rep -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+    (* nut list -> rep -> KK.rel_expr -> KK.rel_expr *)
     and to_guard guard_us R r =
       let
         val unpacked_rs = unpack_joins r
@@ -1737,16 +1720,16 @@
         else
           kk_rel_if (fold1 kk_or guard_fs) (empty_rel_for_rep R) r
       end
-    (* rep -> rep -> Kodkod.rel_expr -> int -> Kodkod.rel_expr *)
+    (* rep -> rep -> KK.rel_expr -> int -> KK.rel_expr *)
     and to_project new_R old_R r j0 =
       rel_expr_from_rel_expr kk new_R old_R
                              (kk_project_seq r j0 (arity_of_rep old_R))
-    (* rep list -> nut list -> Kodkod.rel_expr *)
+    (* rep list -> nut list -> KK.rel_expr *)
     and to_product Rs us =
       case map (uncurry to_opt) (filter (not_equal Unit o fst) (Rs ~~ us)) of
         [] => raise REP ("Nitpick_Kodkod.to_product", Rs)
       | rs => fold1 kk_product rs
-    (* int -> typ -> rep -> nut -> Kodkod.rel_expr *)
+    (* int -> typ -> rep -> nut -> KK.rel_expr *)
     and to_nth_pair_sel n res_T res_R u =
       case u of
         Tuple (_, _, us) => to_rep res_R (nth us n)
@@ -1774,9 +1757,9 @@
                                (to_rep res_R (Cst (Unity, res_T, Unit)))
                | arity => to_project res_R nth_R (to_rep (Opt (Struct Rs)) u) j0
              end
-    (* (Kodkod.formula -> Kodkod.formula -> Kodkod.formula)
-       -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.formula) -> nut -> nut
-       -> Kodkod.formula *)
+    (* (KK.formula -> KK.formula -> KK.formula)
+       -> (KK.rel_expr -> KK.rel_expr -> KK.formula) -> nut -> nut
+       -> KK.formula *)
     and to_set_bool_op connective set_oper u1 u2 =
       let
         val min_R = min_rep (rep_of u1) (rep_of u2)
@@ -1792,12 +1775,12 @@
                                         (kk_join r2 true_atom)
         | _ => raise REP ("Nitpick_Kodkod.to_set_bool_op", [min_R])
       end
-    (* (Kodkod.formula -> Kodkod.formula -> Kodkod.formula)
-       -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.rel_expr)
-       -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.formula)
-       -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.formula)
-       -> (Kodkod.rel_expr -> Kodkod.rel_expr -> Kodkod.formula) -> bool -> rep
-       -> nut -> nut -> Kodkod.rel_expr *)
+    (* (KK.formula -> KK.formula -> KK.formula)
+       -> (KK.rel_expr -> KK.rel_expr -> KK.rel_expr)
+       -> (KK.rel_expr -> KK.rel_expr -> KK.formula)
+       -> (KK.rel_expr -> KK.rel_expr -> KK.formula)
+       -> (KK.rel_expr -> KK.rel_expr -> KK.formula) -> bool -> rep -> nut
+       -> nut -> KK.rel_expr *)
     and to_set_op connective connective3 set_oper true_set_oper false_set_oper
                   neg_second R u1 u2 =
       let
@@ -1829,51 +1812,47 @@
                    r1 r2
              | _ => raise REP ("Nitpick_Kodkod.to_set_op", [min_R]))
       end
-    (* typ -> rep -> (Kodkod.int_expr -> Kodkod.int_expr) -> Kodkod.rel_expr *)
+    (* typ -> rep -> (KK.int_expr -> KK.int_expr) -> KK.rel_expr *)
     and to_bit_word_unary_op T R oper =
       let
         val Ts = strip_type T ||> single |> op @
-        (* int -> Kodkod.int_expr *)
-        fun int_arg j = int_expr_from_atom kk (nth Ts j) (Kodkod.Var (1, j))
+        (* int -> KK.int_expr *)
+        fun int_arg j = int_expr_from_atom kk (nth Ts j) (KK.Var (1, j))
       in
         kk_comprehension (decls_for_atom_schema 0 (atom_schema_of_rep R))
-            (Kodkod.FormulaLet
-                 (map (fn j => Kodkod.AssignIntReg (j, int_arg j)) (0 upto 1),
-                  Kodkod.IntEq (Kodkod.IntReg 1, oper (Kodkod.IntReg 0))))
+            (KK.FormulaLet
+                 (map (fn j => KK.AssignIntReg (j, int_arg j)) (0 upto 1),
+                  KK.IntEq (KK.IntReg 1, oper (KK.IntReg 0))))
       end
-    (* typ -> rep
-       -> (Kodkod.int_expr -> Kodkod.int_expr -> Kodkod.int_expr -> bool) option
-       -> (Kodkod.int_expr -> Kodkod.int_expr -> Kodkod.int_expr) option
-       -> Kodkod.rel_expr *)
+    (* typ -> rep -> (KK.int_expr -> KK.int_expr -> KK.int_expr -> bool) option
+       -> (KK.int_expr -> KK.int_expr -> KK.int_expr) option -> KK.rel_expr *)
     and to_bit_word_binary_op T R opt_guard opt_oper =
       let
         val Ts = strip_type T ||> single |> op @
-        (* int -> Kodkod.int_expr *)
-        fun int_arg j = int_expr_from_atom kk (nth Ts j) (Kodkod.Var (1, j))
+        (* int -> KK.int_expr *)
+        fun int_arg j = int_expr_from_atom kk (nth Ts j) (KK.Var (1, j))
       in
         kk_comprehension (decls_for_atom_schema 0 (atom_schema_of_rep R))
-            (Kodkod.FormulaLet
-                 (map (fn j => Kodkod.AssignIntReg (j, int_arg j)) (0 upto 2),
+            (KK.FormulaLet
+                 (map (fn j => KK.AssignIntReg (j, int_arg j)) (0 upto 2),
                   fold1 kk_and
                         ((case opt_guard of
                             NONE => []
                           | SOME guard =>
-                            [guard (Kodkod.IntReg 0) (Kodkod.IntReg 1)
-                                   (Kodkod.IntReg 2)]) @
+                            [guard (KK.IntReg 0) (KK.IntReg 1) (KK.IntReg 2)]) @
                          (case opt_oper of
                             NONE => []
                           | SOME oper =>
-                            [Kodkod.IntEq (Kodkod.IntReg 2,
-                                 oper (Kodkod.IntReg 0) (Kodkod.IntReg 1))]))))
+                            [KK.IntEq (KK.IntReg 2,
+                                       oper (KK.IntReg 0) (KK.IntReg 1))]))))
       end
-    (* rep -> rep -> Kodkod.rel_expr -> nut -> Kodkod.rel_expr *)
+    (* rep -> rep -> KK.rel_expr -> nut -> KK.rel_expr *)
     and to_apply res_R func_u arg_u =
       case unopt_rep (rep_of func_u) of
         Unit =>
         let val j0 = offset_of_type ofs (type_of func_u) in
           to_guard [arg_u] res_R
-                   (rel_expr_from_rel_expr kk res_R (Atom (1, j0))
-                                           (Kodkod.Atom j0))
+                   (rel_expr_from_rel_expr kk res_R (Atom (1, j0)) (KK.Atom j0))
         end
       | Atom (1, j0) =>
         to_guard [arg_u] res_R
@@ -1902,7 +1881,7 @@
             (kk_n_fold_join kk true R1 R2 (to_opt R1 arg_u) (to_r func_u))
         |> body_rep R2 = Formula Neut ? to_guard [arg_u] res_R
       | _ => raise NUT ("Nitpick_Kodkod.to_apply", [func_u])
-    (* int -> rep -> rep -> Kodkod.rel_expr -> nut *)
+    (* int -> rep -> rep -> KK.rel_expr -> nut *)
     and to_apply_vect k R' res_R func_r arg_u =
       let
         val arg_R = one_rep ofs (type_of arg_u) (unopt_rep (rep_of arg_u))
@@ -1912,11 +1891,10 @@
         kk_case_switch kk arg_R res_R (to_opt arg_R arg_u)
                        (all_singletons_for_rep arg_R) vect_rs
       end
-    (* bool -> nut -> Kodkod.formula *)
+    (* bool -> nut -> KK.formula *)
     and to_could_be_unrep neg u =
-      if neg andalso is_opt_rep (rep_of u) then kk_no (to_r u)
-      else Kodkod.False
-    (* nut -> Kodkod.rel_expr -> Kodkod.rel_expr *)
+      if neg andalso is_opt_rep (rep_of u) then kk_no (to_r u) else KK.False
+    (* nut -> KK.rel_expr -> KK.rel_expr *)
     and to_compare_with_unrep u r =
       if is_opt_rep (rep_of u) then
         kk_rel_if (kk_some (to_r u)) r (empty_rel_for_rep (rep_of u))