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Proof step 8 from proof read-loop-err (previous step)

buf = mkbuf(VFS_PAGE_SIZE), buf0 = buf1, err = ESUCCESS, ino = (ino2 + ino0) % VFS_PAGE_SIZE, ino0 = ino5, ino1 = ino4, ino2 = ino3, ¬ isdir, n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino, inode.size - ino2 + ino0), pageno = (ino2 + ino0) / VFS_PAGE_SIZE, inode.size ≥ ino2 + ino0, VFS_PAGE_SIZE ≥ ino, ino1 ≥ ino2 + ino0 ⊦ [afs_readpage#(inode, pageno, dirs, files, asynced; buf, err); if err = ESUCCESS then {buf0 := copy(buf, ino, buf0, ino0, n); ino0 := ino0 + n}] (⌊err⌋ ∨ err = ESUCCESS), VFS_PAGE_SIZE = 0, n = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
buf = mkbuf(VFS_PAGE_SIZE), err = ESUCCESS, VFS_PAGE_SIZE - (ino2 + ino0) % VFS_PAGE_SIZE ≠ 0, inode.size ≠ ino2 + ino0, ino1 ≠ ino2 + ino0, ino2 + ino0 < inode.size, ino2 + ino0 < ino1 ⊦ [afs_readpage#(inode, (ino2 + ino0) / VFS_PAGE_SIZE, dirs, files, asynced; buf, err); if err = ESUCCESS then {buf0 := copy (buf, (ino2 + ino0) % VFS_PAGE_SIZE, buf0, ino0, min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - (ino2 + ino0) % VFS_PAGE_SIZE, inode.size - ino2 + ino0)); ino3 := ino0 + min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - (ino2 + ino0) % VFS_PAGE_SIZE, inode.size - ino2 + ino0)}] (⌊err⌋ ∨ err = ESUCCESS)

Rule argument

Additional information

Used simplifier rules: ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic% ⊦ m ≠ n → (m ≤ n ↔ m < n); (s)%n ≠ 0 ⊦ m % n ≤ n; (s)% ⊦ m ≤ n → (n - m = 0 ↔ n = m); (s)% ⊦ n ≥ m ↔ m ≤ n; (s)% ⊦ VFS_PAGE_SIZE ≠ 0; (s)% ⊦ min(n0, n1, n2) = 0 ↔ n0 = 0 ∨ n1 = 0 ∨ n2 = 0; (ws)