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Proof step 71 from proof junkrefs-put-refval (previous step)

st[r1 -- mkfs(class0, ty2, fieldvar0) '] = refval(r2), junkrefs(str, r2 ' + refs, ty2, st[r -- mkfs(class, ty0, fieldvar) ', refval(r0)]), is_obj(str, r1, st), st[r1 -- _type] .type ≤ ty, is_obj(r, st), st[r0 -- _type] .type ≤ ty0, mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), mkfs(class0, ty2, fieldvar0) ' ∈ instfields(st[r1 -- _type] .type .class), ∀ str0, ty1, st0, r3, r4, fs0. ¬ junkrefs(str0, r2 ' + refs, ty1, st0) ∧ ¬ junkref(str0, r3, st0) ∧ is_obj(r4, st0) ∧ st0[r3 -- _type] .type ≤ fs0 .type ∧ r3 ≠ jvmref ∧ fs0 ' ∈ instfields(st0[r4 -- _type] .type .class) → ¬ junkrefs(str0, r2 ' + refs, ty1, st0[r4 -- fs0 ', refval(r3)]) ⊦ r = r1, r1 = jvmref, r0 = jvmref, junkref(str, r0, st), r ≠ r2 ∧ ¬ r ∈ refs, ∃ fs0. fs0 ' ∈ instfields(st[r1 -- _type] .type .class) ∧ is_referencevalue(st[r1 -- fs0 ']) ∧ r2 = st[r1 -- fs0 '] .refval ∧ junkrefs(str, st[r1 -- fs0 '] .refval ' + refs, fs0 .type, st)

User applied rule exists right

And obtained the following new goals

Rule argument

[EXRARG : pos: right 6, [extquanttermlist: (mkfs(class0, ty2, fieldvar0)) abort:F , discard:T , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (mkfs(class0, ty2, fieldvar0))]]