| # lpt1 = n1 + n0, lpt1[n0] = mklp(m, m0, lpf, m1), gc-heap(lpt2, log, n0) = keyset(gch), lpf = LP_GROUP_NODES, bin-heap-inv(gch, lpt1), id-idx(lpt2, lpt1) ⊦ ⟪gc_heap_insert#(key-index(m, n0); gch, lpt1); n := n0 + 1⟫ (n ≤ # lpt1 ∧ bin-heap-inv(gch, lpt1) ∧ gc-heap(lpt2, log, n) = keyset(gch) ∧ id-idx(lpt2, lpt1) ∧ # lpt1 < n1 + n), n1 = 0, n0 ∈ log |
# lpt1 = n1 + n0, lpt1[n0] = mklp(m, m0, LP_GROUP_NODES, m1), gc-heap(lpt2, log, n0) = keyset(gch), n1 ≠ 0, bin-heap-inv(gch, lpt1), id-idx(lpt2, lpt1), ¬ n0 ∈ log ⊦ ⟪gc_heap_insert#(key-index(m, n0); gch, lpt1); n := n0 + 1⟫ (n ≤ # lpt1 ∧ bin-heap-inv(gch, lpt1) ∧ gc-heap(lpt2, log, n) = keyset(gch) ∧ id-idx(lpt2, lpt1) ∧ # lpt1 < n1 + n)