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Proof step 72 from proof overwrite-write-page-clean (previous step)

icache[ino] = mkientry(boolvar, mkinode(m0, md, true, m1, m4, m5)), files[ino] = mkfile(m2, md0, m3, content0), ino ∈ icache, ino ∈ files ⊦ datakey(ino, n) = datakey(ino, m), datakey(ino, n) ∈ pcache, n ∈ content0, (n ∈ (content0 ⊕ mkcontent(ino, pcache))[m, buf] ↔ n ∈ content0[m, buf] ⊕ mkcontent(ino, pcache[datakey(ino, m), mkpentry(false, buf)])) ∧ (content0 ⊕ mkcontent(ino, pcache))[m, buf][n] = (content0[m, buf] ⊕ mkcontent(ino, pcache[datakey(ino, m), mkpentry(false, buf)]))[n]

User applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 4

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