Section CENV_SUB.
intros.
rewrite <- (@eval_expr_cenv_sub_eq _ _ CSUB rho e); auto; congruence.
Qed.
intros.
rewrite <- (@eval_expr_cenv_sub_eq _ _ CSUB rho e); auto; congruence.
Qed.
intros.
rewrite <- (@eval_expr_cenv_sub_eq _ _ CSUB rho e); auto; congruence.
Qed.
intros.
rewrite <- (@eval_expr_cenv_sub_eq _ _ CSUB rho e); auto; congruence.
Qed.

Lemma denote_tc_nonzero_eval_expr_cenv_sub {CS CS'} (CSUB : cenv_sub (@cenv_cs CS) (@cenv_cs CS')) rho w e
(E : (` denote_tc_nonzero) (@eval_expr CS e) rho w):
(` denote_tc_nonzero) (@eval_expr CS' e) rho w.