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Proof step 8 from proof writepage-afs-cons (previous step)

err = ESUCCESS, afs-cons(dirs, files) ⊦ [fail_or_success#(; ; err); choose bv with true in asynced := bv; if err = ESUCCESS then {buf2 := copy(buf0, ino0, buf2, ino, n); afs_writepage#(inode, pageno, buf2, dirs; err, files; asynced)}] afs-cons(dirs, files)

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 9:
err = ESUCCESS, afs-cons(dirs, files) ⊦ [choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; choose bv with true in asynced := bv; if err = ESUCCESS then {buf2 := copy(buf0, ino0, buf2, ino, n); afs_writepage#(inode, pageno, buf2, dirs; err, files; asynced)}] afs-cons(dirs, files)

Rule argument

pos: right 1

Additional information

Used simplifier rules: fail_or_success#(; ; ERR) {choose ERR0 with ⌊ERR0⌋ ∨ ERR0 = ESUCCESS in ERR := ERR0};