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Proof step 8 from proof gfts-not-01 (conclusion)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
oktype(val, ty, st), goodfieldsandtypes(r, sks, st) ⊦ mkfs(class0, ty, fieldvar) ' = _type, goodfieldsandtypes(r, sks, st[r0 -- mkfs(class0, ty, fieldvar) ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]