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Proof step 19 from proof gengft (previous step)

sk .fs = mkfs(class, ty, fieldvar), goodfieldandtype(r, sk, st), okval(val, ty) ⊦ goodfieldandtype(r0, sk0, st[r -- sk, val]) ↔ goodfieldandtype(r0, sk0, st), sk = _type

User applied rule structural induction

And obtained the following new goals

Proof step 17:
fs ' .fs = mkfs(class, ty, fieldvar), goodfieldandtype(r, fs ', st), okval(val, ty) ⊦ goodfieldandtype(r0, sk0, st[r -- fs ', val]) ↔ goodfieldandtype(r0, sk0, st), fs ' = _type
Proof step 18:
⊦ ¬ goodfieldandtype(r, i ', st)

Rule argument

[VARWITHVARSEQSARG : sk, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : storekey generated by ', ';], [CSIMPSEQ : ⊦ _type ≠ i '])]]