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Proof step 19 from proof isobj-put-samefield-03 (conclusion)

⊦ is_obj(r, st) ∧ oktype(val, fs .type, st) ∧ fs ' ≠ _type → is_obj(r, st[r -- fs ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
is_obj(r, st), okval(val, fs .type) ⊦ fs ' = _type, is_obj(r, st[r -- fs ', val])

Rule argument

[emptyarg]

Additional information

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