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Proof step 4 from proof addobj-at-01 (previous step)

sk0 .fs = mkfs(class0, ty, fieldvar), ∀ r, r0, sk, class, st. r ≠ r0 ∨ ¬ sk ∈ sks0 ∧ sk ≠ _type → (addobj(r0, class, sks0, st)[r -- sk]) = st[r -- sk], r ≠ r0 ∨ sk ≠ sk0 ∧ ¬ sk ∈ sks0 ∧ sk ≠ _type, r ≠ r0 ∨ sk ≠ sk0 ⊦ (addobj(r0, class, sks0, st)[r -- sk]) = st[r -- sk]

User applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 2, [extquanttermlist: (r, r0, sk, class, st) abort:F , discard:T , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r, r0, sk, class, st)]]