| ⊦ ((btree(rp, r, adr, height, dirty, fi, iast, as, alladrs, nstat) * P))(zh) → ((btree(rp, r, adr, height, true, fi, iast, as, alladrs, nstat) * P))(zh) |
((btree(rp, r, adr, height, dirty, fi, iast, as, alladrs, nstat) * P))(zh) ⊦ ((btree(rp, r, adr, height, true, fi, iast, as, alladrs, nstat) * P))(zh)