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Proof step 10 from proof write-loop-err (previous step)

err = ESUCCESS, ino = (ino2 + ino0) % VFS_PAGE_SIZE, ino0 = ino5, ino1 = ino4, ino2 = ino3, ¬ isdir, pageno = (ino2 + ino0) / VFS_PAGE_SIZE ⊦ [let n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino) in if n ≠ 0 then {vfs_writepage#(inode, pageno, buf, ino0, ino, n, dirs; err, files, asynced); if err = ESUCCESS then ino0 := ino0 + n} else isdir := true] (err = ESUCCESS ∨ ⌊err⌋ ), VFS_PAGE_SIZE = 0

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Proof step 11:
err = ESUCCESS, ino = (ino2 + ino0) % VFS_PAGE_SIZE, ino0 = ino5, ino1 = ino4, ino2 = ino3, ¬ isdir, n = min(ino1 - ino2 + ino0, VFS_PAGE_SIZE - ino), pageno = (ino2 + ino0) / VFS_PAGE_SIZE, ino1 ≥ ino2 + ino0, VFS_PAGE_SIZE ≥ ino ⊦ [if n ≠ 0 then {vfs_writepage#(inode, pageno, buf, ino0, ino, n, dirs; err, files, asynced); if err = ESUCCESS then ino0 := ino0 + n} else isdir := true] (err = ESUCCESS ∨ ⌊err⌋ ), VFS_PAGE_SIZE = 0

Proof step 10 from proof write-loop-err (previous step)

Heuristic symbolic execution applied rule let right

And obtained the following new goals

Rule argument

Additional information