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Proof step 231 from proof write-term (previous step)

files1[m] = mkfile(m1, md, # links(m, dirs), content), of[fd] = mkfile(m, mode, m0), files0[m] = mkfile(m2, md0, # links(m, dirs), content0), dirs0 = dirs, err = err0, err1 = err, err2 = err3, err3 = ESUCCESS, files = files1, m2 < m0 + ino, afs-cons(dirs, files0), afs-cons(dirs, files0[m, mkfile(m2, md0, # links(m, dirs), content0 upto m2)]), of-cons(of, dirs, files0), m ∈ files0, fd ∈ of, m ∈ files1, n ≤ # buf0, (m0 ≤ m2 ⊃ m2 ≥ m0;true), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪of[fd].pos := m0 + (m0 ≤ m2 ⊃ m2 - m0;0)⟫ (dirs0 = dirs), err1 = ESUCCESS, ino = 0, n = 0, m2 % VFS_PAGE_SIZE ≠ 0 ∧ m2 / VFS_PAGE_SIZE ∈ content0, mode ≠ MODE_W ∧ mode ≠ MODE_RW

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

Additional information

Used simplifier rules: ⊦ ⌊err⌋ → err ≠ ESUCCESS; (s)% ⊦ n ≥ m ↔ m ≤ n; (s)