enrich
refmap-ex-maplet
with
predicates
True : Bool;
. ≡ . : Map[Ref[A], A] × Map[Ref[A], A];
variables
bv : Bool;
h : Map[Ref[A], A];
r : Ref[A];
o : A;
hP : Map[Ref[A], A] → Bool;
axioms
True: True(bv) ↔ bv;
used for: ls;
eq: h0 ≡ h1 ↔ h0 = h1;
used for: ls;
end enrich