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Proof step 17 from proof ac-lookup-05 (previous step)

fs = mkfs(class1, ty, fieldvar), is_indexkey(sk), ∀ sk0, class0, st0, r0. ¬ is_fskey(sk0) → (addclass(class0, fis0, st0)[r0 -- sk0]) = st0[r0 -- sk0] ⊦ (addclass(class, fis0, st)[r -- sk]) = st[r -- sk], class1 = class

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 16:
is_indexkey(sk), ∀ sk0, class0, st0, r0. ¬ is_fskey(sk0) → (addclass(class0, fis0, st0)[r0 -- sk0]) = st0[r0 -- sk0] ⊦ (addclass(class, fis0, st)[r -- sk]) = st[r -- sk], class1 = class

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]