| asynced ↔ asynced1, asynced0 ↔ asynced2, afs-cons(dirs, files) ⊦ ⟪choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0⟫ true |
asynced0 ↔ asynced2, asynced ↔ asynced1, afs-cons(dirs, files), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪err := err0⟫ true
asynced0 ↔ asynced2, asynced ↔ asynced1, afs-cons(dirs, files) ⊦ ∃ err0. ⌊err0⌋ ∨ err0 = ESUCCESS