| # lpt = # avol0 ⊦ abs-istore(avol0, lpt, istore) ∧ id○(avol1, avol0, n) → ( abs-istore(avol1, lpt[n, lp], istore[n, iblock]) ↔ n < # lpt ∧ ((lpt[n].flags = LP_INDEX_NODES → lpt[n].ref-size = istore[n].ref-size) → lp.ref-size = iblock.ref-size ∧ lp.flags = LP_INDEX_NODES) ∧ ((lpt[n].flags = LP_INDEX_NODES → abs-leb(avol0[n], istore[n], lpt[n])) → abs-leb(avol1[n], iblock, lp))) |