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Proof step 20 from proof isobj-put-03 (conclusion)

⊦ is_obj(r, class0, st) ∧ oktype(val, ty, st) ∧ ty ≠ void_type → is_obj(r, class0, st[r1 -- mkfs(class, ty, fieldvar) ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 19:
is_obj(r, class0, st), okval(val, ty) ⊦ ty = void_type, is_obj(r, class0, st[r1 -- mkfs(class, ty, fieldvar) ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ oktype(val, ty, st) ↔ okval(val, ty)])]]