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Proof step 17 from proof refine-sync (previous step)

afs-cons(cache_dirs, (cache_files ⊕ cache_pcache) ⊕ cache_icache), afs-cons(cache_dirs, cache_files), dcache-cons(cache_dcache, cache_dirs, cache_files), icache-cons(cache_icache, cache_dirs, cache_files), pcache-cons(cache_pcache, cache_dirs, cache_files), synced(cache_dirs, cache_icache, cache_pcache), cache_sync → synced(cache_files, cache_icache, cache_pcache), ⌊err1⌋ ∨ err1 = ESUCCESS ⊦ ⟨asynced := err1 = ESUCCESS⟩ ((asynced ↔ err1 = ESUCCESS) ∧ err1 = err1), ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; asynced := err = ESUCCESS⟩ ((asynced ↔ err = ESUCCESS) ∧ err1 = err)

Heuristic symbolic execution applied rule assign right

And closed the goal!

Rule argument

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