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Proof step 17 from proof validrefs-put-last (previous step)

acc = [], st[r -- mkfs(class, ty0, fieldvar) '] = refval(r1), acc + r0 ' = r1 ' + refs, validrefs(str, r1 ' + refs, ty0, st[r0 -- sk, val]), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), st[r -- _type] .type ≤ ty, is_obj(str, r, st) ⊦ r = jvmref, r0 = r, sk = _type, validrefs(str, r1 ' + refs, ty0, st), junkref(str, r, st), r0 ∈ acc, ¬ r1 ∈ acc ∧ r1 ≠ r0, r0 ≠ r1 ∧ ¬ r0 ∈ refs, ¬ junkref(str, acc .first, st) ∧ acc ≠ []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 16:
st[r -- mkfs(class, ty0, fieldvar) '] = refval(r1), is_obj(str, r, st), st[r -- _type] .type ≤ ty, mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), validrefs(str, r1 ', ty0, st[r1 -- sk, val]) ⊦ sk = _type, r1 = r, r = jvmref, junkref(str, r, st), validrefs(str, r1 ', ty0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ refs + [] = refs], [CSIMPSEQ : ⊦ ¬ r ∈ []], [CSIMPSEQ : ⊦ r ' = r0 ' + refs ↔ r = r0 ∧ refs = []], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ [] + refs = refs])]]