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Proof step 25 from proof sharing-twopaths (previous step)

st[r -- sks0] = refval(refs0 .last), st[r -- sks] = refval(r0), # sks1 = # refs0, fits(r, sks0, st), fits(r, sks, st), validrefs(str, r0 ' + refs0, mkclasstype(`java.lang.Object' .class), st), fits(r0, sks1, st), # refs0 ≠ 0 ∧ ¬ # refs0 < # refs0 → st[r0 -- firstn(# refs0, sks1)] .refval = (r0 ' + refs0)[# refs0] ⊦ refs0 = [], r = jvmref, sks = sks0, sks = [], sks0 = [], r0 = jvmref, refs0 .last = jvmref, sks ⊑ sks0, hasSharing(r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 24:
st[r -- sks0] = refval(refs0 .last), st[r -- sks] = refval(r0), # sks1 = # refs0, st[r0 -- sks1] .refval = (r0 ' + refs0)[# refs0], fits(r, sks0, st), fits(r, sks, st), validrefs(str, r0 ' + refs0, mkclasstype(`java.lang.Object' .class), st), fits(r0, sks1, st) ⊦ refs0 = [], r = jvmref, sks = sks0, sks = [], sks0 = [], r0 = jvmref, refs0 .last = jvmref, sks ⊑ sks0, hasSharing(r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ # sks = n → firstn(n, sks) = sks], [CSIMPSEQ : ⊦ ¬ n < n], [CSIMPSEQ : ⊦ # refs = 0 ↔ refs = []])]]