| ⊦ ( (# gs.ar ≠ 0 ∧ htok(gs.ar)) ∧ ls.n < # gs.ar ∧ ls.e ≠ ⊥ ∧ ls.sz = # gs.ar ∧ (ls.n0 < # gs.ar ∧ ls.n0 = get_hash(ls.e, ls.sz)) ∧ ¬ ls.b ∧ (gs.ar[ls.n] ≠ ⊥ ∧ gs.ar[ls.n] ≠ ls.e) ∧ ls.e ≠ ls.e0 ∧ allslotsfull(gs.ar, ls.n0, ls.n, ls.e, false)) ∧ pre(gs, ls, M13, a) → ls.sz ≠ 0 |