Scheme expr_ind2 := Induction for Csyntax.expr Sort Prop
  with exprlist_ind2 := Induction for Csyntax.exprlist Sort Prop.Combined Scheme expr_exprlist_ind from expr_ind2, exprlist_ind2.

Lemma transl_expr_meets_spec: forall r dst g sl a g' I, transl_expr dst r g = Res (sl, a) g' I -> dest_below dst g -> exists tmps, forall ge e le m, tr_top ge e le m dst r sl a tmps.