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Proof step 26 from proof validstatfields-addclass-other (previous step)

¬ (is_fskey(sk) ∧ sk .fs .class ≠ class ∧ class ≠ `java.lang.Object' .class), sk ∈ statfields(class0), ∀ sk. sk ∈ statfields(class0) → validstatfield(str, sk, st) ⊦ class = `java.lang.Object' .class, class = class0, validstatfield(str, sk, addclass(class, fis, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 25:
sk ∈ statfields(class0), ∀ sk. sk ∈ statfields(class0) → validstatfield(str, sk, st) ⊦ class = `java.lang.Object' .class, class = class0, validstatfield(str, sk, addclass(class, fis, st)), ¬ is_indexkey(sk) ∧ sk .fs .class ≠ class

Rule argument

[emptyarg]

Additional information

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