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Proof step 39 from proof nosharing-forward (previous step)

st[st[r -- fs '] .refval -- sks0] = refval(r0), st[r -- _type] .type = mkclasstype(class), st[st[r -- fs '] .refval -- sks] = refval(r0), fits(st[r -- fs '] .refval, sks, st), fits(st[r -- fs '] .refval, sks0, st), validrefnotnull(str, r, ty, st), fs ' ∈ instfields(class) ⊦ sks0 = sks, sks0 = [], sks = [], r0 = jvmref, r = jvmref, ∃ sks1, sks2. fits(r, sks1, st) ∧ fits(r, sks2, st) ∧ sks1 ≠ sks2 ∧ sks1 ≠ [] ∧ sks2 ≠ [] ∧ st[r -- sks1] .refval ≠ jvmref ∧ st[r -- sks1] = st[r -- sks2]

User applied rule exists right

And obtained the following new goals

Proof step 38:
st[st[r -- fs '] .refval -- sks0] = refval(r0), st[r -- _type] .type = mkclasstype(class), st[st[r -- fs '] .refval -- sks] = refval(r0), fits(st[r -- fs '] .refval, sks, st), fits(st[r -- fs '] .refval, sks0, st), validrefnotnull(str, r, ty, st), fs ' ∈ instfields(class) ⊦ sks0 = sks, sks0 = [], sks = [], r0 = jvmref, r = jvmref, fits(r, fs ' + sks, st) ∧ fits(r, fs ' + sks0, st) ∧ fs ' + sks ≠ fs ' + sks0 ∧ fs ' + sks ≠ [] ∧ fs ' + sks0 ≠ [] ∧ st[r -- (fs ' + sks)] .refval ≠ jvmref ∧ st[r -- (fs ' + sks)] = st[r -- (fs ' + sks0)]

Rule argument

[EXRARG : pos: right 6, [extquanttermlist: (fs ' + sks, fs ' + sks0) abort:F , discard:T , computed:F ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (fs ' + sks, fs ' + sks0)]]