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Proof step 42 from proof inv-read-buf (previous step)

# buf1 = EB_PAGE_SIZE, # lpt = # avol, # buf = n0 + n, avol[m3] = mapped(buf2), m3 < # avol, ebm-vol-inv(avol), m0 + n ≤ LEB_SIZE, n ≤ # buf, ⌊err0⌋ , bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(mkwbuf(buf1, m5, m4), avol[bleb.leb], rofs) ⊦ ∃ buf0. # buf0 = # buf ∧ range=(buf, n, buf0, n, n0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 43:
# buf1 = EB_PAGE_SIZE, # lpt = # avol, # buf = n0 + n, avol[m3] = mapped(buf2), m3 < # avol, ebm-vol-inv(avol), m0 + n ≤ LEB_SIZE, ⌊err0⌋ , bleb ≠ nobuffer → bleb.leb < # avol ∧ wbuf-cons(mkwbuf(buf1, m5, m4), avol[bleb.leb], rofs) ⊦ ∃ buf0. # buf0 = n0 + n ∧ range=(buf, n, buf0, n, n0)

Rule argument

Additional information

Used simplifier rules: c: ⊦ m + n = n + m; from specification nat-basic%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic% ⊦ m ≤ m + n; (s)