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Proof step 14 from proof hasSharing-def-better (previous step)

sks = [], st[r -- sks] = refval(r0), st[r -- sks0] = refval(r0), fits(r, sks0, st), fits(r, sks, st) ⊦ r0 = jvmref, sks0 = sks, ∃ 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], sks0 ≠ [] ∧ sks ≠ []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
⊦ fits(r, [], st)
Proof step 13:
st[r0 -- sks0] = refval(r0), fits(r0, sks0, st) ⊦ sks0 = [], r0 = jvmref, ∃ sks1, sks2. fits(r0, sks1, st) ∧ fits(r0, sks2, st) ∧ sks1 ≠ sks2 ∧ sks1 ≠ [] ∧ sks2 ≠ [] ∧ st[r0 -- sks1] .refval ≠ jvmref ∧ st[r0 -- sks1] = st[r0 -- sks2]

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ refval(r) = refval(r0) ↔ r = r0], [CSIMPSEQ : ⊦ st[r -- []] = refval(r)])]]