Section EXTEN.
Variable valu1: valuation.
Variable upto: valnum.
Variable valu2: valuation.
Hypothesis AGREE: valu_agree valu1 valu2 upto.
Variable ge: genv.
Variable sp: val.
Variable rs: regset.
Variable m: mem.
End EXTEN.
Ltac splitall := repeat (match goal with |- _ /\ _ => split end).

Lemma find_valnum_rhs'_charact:
forall rh v eqs,
find_valnum_rhs' rh eqs = Some v -> exists strict, In (Eq v strict rh) eqs.