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Proof step 1 from proof pre-seek-efail (conclusion)

⊦ pre-seek(fd, n, whence, EFAIL, user, root, fs, ofh)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ ⌊err⌋ → pre-seek(fd, n, whence, err, user, root, fs, ofh)

Rule argument

spec: <toplevel> name: pre-seek-elowlevel seq: ⊦ ⌊err⌋ → pre-seek(fd, n, whence, err, user, root, fs, ofh) subst: [ofh, fs, root, user, err, whence, n, fd] → [ofh, fs, root, user, EFAIL, whence, n, fd] flags: <all paths>

Additional information

Used simplifier rules: ⊦ ⌊EFAIL⌋ ; (s) Used terms: ofh, fs, root, user, EFAIL, whence, n, fd