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Proof step 4 from proof add-gft (previous step)

¬ is_fskey(sk) ⊦ r = r0, goodfieldandtype(r0, sk, addarray(r, ty, vals, st)) ↔ goodfieldandtype(r0, sk, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
is_indexkey(sk) ⊦ r = r0, goodfieldandtype(r0, sk, addarray(r, ty, vals, st)) ↔ goodfieldandtype(r0, sk, st)

Rule argument

[emptyarg]

Additional information

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