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Proof step 7 from proof gfts-not-01 (previous step)

oktype(val, ty, st), goodfieldsandtypes(r, sks, st) ⊦ mkfs(class0, ty, fieldvar) ' = _type, goodfieldsandtypes(r, sks, st[r0 -- mkfs(class0, ty, fieldvar) ', val])

User applied rule structural induction

And obtained the following new goals

Proof step 1:
⊦ goodfieldsandtypes(r, [], st)
Proof step 6:
∀ val, ty, st, r, class0, fieldvar, r0. oktype(val, ty, st) ∧ goodfieldsandtypes(r, sks0, st) → mkfs(class0, ty, fieldvar) ' = _type ∨ goodfieldsandtypes(r, sks0, st[r0 -- mkfs(class0, ty, fieldvar) ', val]), oktype(val, ty, st), goodfieldsandtypes(r, sk + sks0, st) ⊦ mkfs(class0, ty, fieldvar) ' = _type, goodfieldsandtypes(r, sk + sks0, st[r0 -- mkfs(class0, ty, fieldvar) ', val])

Rule argument

[VARWITHVARSEQSARG : sks, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : storekeys generated by [], +;])]]