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Proof step 1 from proof inv-fsync (conclusion)

root.dir?, fids-cons(root, fs, ofh) ⊦ ⟪posix_fsync#(path, psynced, user, root, fs, ofh; ; psynced0, err)⟫ true

Heuristic nonrecursive calls applied rule call right

And obtained the following new goals

Proof step 2:
⊦
Proof step 3:
psynced0 ↔ psynced, root.dir?, fids-cons(root, fs, ofh) ⊦ ⟪choose err0 with pre-fsync(path, psynced0, err0, user, root, fs, ofh) in err := err0; psynced := ?⟫ true

Rule argument

pos: right 1

Additional information

Used simplifier rules: fsync: ⊦ ;