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Proof step 17 from proof unchNorec-junkrefs (previous step)

st[r -- _type] = st0[r -- _type], st[r -- mkfs(class, ty1, fieldvar) '] = refval(r1), junkrefs(str, r1 ' + refs, ty1, st), mkfs(class, ty1, fieldvar) ' ∈ instfields(st0[r -- _type] .type .class), st0[r -- _type] .type ≤ ty, is_obj(str, r, st), unchangedNorec(r, st, st0), is_obj(str, r, st0), ∀ str0, ty0, st1, st2. junkrefs(str0, r1 ' + refs, ty0, st1) ∧ (∀ r0. r0 = r1 ∨ r0 ∈ refs → unchangedNorec(r0, st1, st2)) → junkrefs(str0, r1 ' + refs, ty0, st2), ∀ r0. r0 = r1 ∨ r0 ∈ refs → unchangedNorec(r0, st, st0) ⊦ r = jvmref, ∃ fs. fs ' ∈ instfields(st0[r -- _type] .type .class) ∧ is_referencevalue(st0[r -- fs ']) ∧ r1 = st0[r -- fs '] .refval ∧ junkrefs(str, st0[r -- fs '] .refval ' + refs, fs .type, st0)

User applied rule exists right

And obtained the following new goals

Proof step 16:
st[r -- _type] = st0[r -- _type], st[r -- mkfs(class, ty1, fieldvar) '] = refval(r1), junkrefs(str, r1 ' + refs, ty1, st), mkfs(class, ty1, fieldvar) ' ∈ instfields(st0[r -- _type] .type .class), st0[r -- _type] .type ≤ ty, is_obj(str, r, st), unchangedNorec(r, st, st0), is_obj(str, r, st0), ∀ str0, ty0, st1, st2. junkrefs(str0, r1 ' + refs, ty0, st1) ∧ (∀ r0. r0 = r1 ∨ r0 ∈ refs → unchangedNorec(r0, st1, st2)) → junkrefs(str0, r1 ' + refs, ty0, st2), ∀ r0. r0 = r1 ∨ r0 ∈ refs → unchangedNorec(r0, st, st0) ⊦ r = jvmref, mkfs(class, ty1, fieldvar) ' ∈ instfields(st0[r -- _type] .type .class) ∧ is_referencevalue(st0[r -- mkfs(class, ty1, fieldvar) ']) ∧ r1 = st0[r -- mkfs(class, ty1, fieldvar) '] .refval ∧ junkrefs(str, st0[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, mkfs(class, ty1, fieldvar) .type, st0)

Rule argument

[EXRARG : pos: right 2, [extquanttermlist: (mkfs(class, ty1, fieldvar)) abort:F , discard:T , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (mkfs(class, ty1, fieldvar))]]