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Proof step 8 from proof ac-lookup-04 (previous step)

sk0 = fs ', is_fskey(sk0), ∀ r, class1, st, sk. r = jvmref ∨ (addclass(class1, fis0, st)[r -- sk]) = st[r -- sk] ⊦ r = jvmref, (addclass(class1, (sk0 × val) ' + fis0, st)[r -- sk]) = st[r -- sk], ¬ is_indexkey(sk0) ∧ fs .class ≠ class1

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
∀ r, class1, st, sk. r = jvmref ∨ (addclass(class1, fis0, st)[r -- sk]) = st[r -- sk] ⊦ (addclass(fs .class, (fs ' × val) ' + fis0, st)[r -- sk]) = st[r -- sk], r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_indexkey(fs ')], [CSIMPSEQ : ⊦ is_fskey(fs ')])]]