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Proof step 9 from proof validstatfields-addclass-other (previous step)

sk .fs = mkfs(class1, ty, fieldvar), sk ∈ statfields(class0), validstatfield(str, sk, addclass(class, fis, st)) ⊦ is_indexkey(sk), class = `java.lang.Object' .class, class = class0, validstatfield(str, sk, st), ¬ is_indexkey(sk) ∧ class1 ≠ class

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
sk .fs = mkfs(class, ty, fieldvar), is_fskey(sk), validstatfield(str, sk, addclass(class, fis, st)), sk ∈ statfields(class0) ⊦ class = class0, class = `java.lang.Object' .class, validstatfield(str, sk, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_indexkey(sk) → ¬ is_fskey(sk)], [CSIMPSEQ : ⊦ ¬ is_indexkey(sk) ↔ is_fskey(sk)])]]