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Proof step 61 from proof prepost-write-orphans (previous step)

avol = avol1[n, mapped(mkbuf(0))], buf = buf0, err = err0, m = 0, m0 = n, n0 = # buf0, n1 = 0, n < # avol1, ebm-vol-inv(avol1), ebm-vol-inv(avol1[n, mapped(mkbuf(0))]), is-aligned(# buf0, EB_PAGE_SIZE), is-encoded-pad(orphans0, # orphans0, buf0), # buf0 ≤ LEB_SIZE, ∀ n2. ¬(n2 < n0 ∧ is-aligned(n2, EB_PAGE_SIZE)), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ [skip] ( ebm-vol-inv(avol) → (err = ESUCCESS ∨ ⌊err⌋ ) ∧ id○(avol, avol1, n) ∧ (err = ESUCCESS → avol[n].mapped? ∧ is-encoded-pad(orphans0, # orphans0, avol[n].data))), err = ESUCCESS

Heuristic symbolic execution applied rule skip right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)% ⊦ id○(avol[n, aleb], avol0, n) ↔ id○(avol, avol0, n); (s)% ⊦ id○(avol, avol, n); (ss)