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Proof step 17 from proof is_obj-put-equiv (previous step)

sk .fs = mkfs(class, ty, fieldvar), okval(st[r1 -- sk], ty), r1 -- sk ∈ st, is_fskey(sk), okval(val, ty), r1 ∈ st ⊦ ty = void_type, class+∃(str, (st[r1 -- sk, val][r -- _type]) .type .class) ∧ ¬ is_abstract((st[r1 -- sk, val][r -- _type]) .type .class) ∧ is_obj(r, st[r1 -- sk, val]) ↔ is_obj(str, r, st)

Heuristic weak cut applied rule cut formula

And obtained the following new goals

Proof step 6:
r -- _type = r1 -- sk, sk .fs = mkfs(class, ty, fieldvar), okval(st[r1 -- sk], ty), r1 -- sk ∈ st, is_fskey(sk), okval(val, ty), r1 ∈ st ⊦ ty = void_type, class+∃(str, (st[r1 -- sk, val][r -- _type]) .type .class) ∧ ¬ is_abstract((st[r1 -- sk, val][r -- _type]) .type .class) ∧ is_obj(r, st[r1 -- sk, val]) ↔ is_obj(str, r, st)
Proof step 16:
sk .fs = mkfs(class, ty, fieldvar), okval(st[r1 -- sk], ty), r1 -- sk ∈ st, is_fskey(sk), okval(val, ty), r1 ∈ st ⊦ r -- _type = r1 -- sk, ty = void_type, class+∃(str, (st[r1 -- sk, val][r -- _type]) .type .class) ∧ ¬ is_abstract((st[r1 -- sk, val][r -- _type]) .type .class) ∧ is_obj(r, st[r1 -- sk, val]) ↔ is_obj(str, r, st)

Rule argument

[fma-arg: r -- _type = r1 -- sk]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRAFMAS : (r -- _type = r1 -- sk)]]