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Proof step 20 from proof writepage-afs-cons (previous step)

buf = copy(buf0, ino0, buf2, ino, n), err = err0, err0 = ESUCCESS, afs-cons(dirs, files), pre-writepage(inode, pageno, buf, dirs, files), ino0 + n ≤ # buf0, ino + n ≤ # buf2 ⊦ [files[inode.ino].content[pageno] := buf; err := ESUCCESS; asynced := ?] afs-cons(dirs, files)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 21:
buf = copy(buf0, ino0, buf2, ino, n), err = err0, err0 = ESUCCESS, afs-cons(dirs, files), pre-writepage(inode, pageno, buf, dirs, files), ino + n ≤ # buf2, ino0 + n ≤ # buf0 ⊦ [err := ESUCCESS; asynced := ?] afs-cons(dirs, files[inode.ino, files[inode.ino].content:= files[inode.ino].content[pageno, buf]])

Proof step 20 from proof writepage-afs-cons (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information