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Proof step 10 from proof junkrefs-put-notin-butlast (previous step)

r -- fs ' ∈ st, okval(st[r -- fs '], fs .type), okval(val, fs .type), r ∈ st ⊦ junkrefs(str, [] + r ', ty, st[r -- fs ', val]) ↔ junkrefs(str, [] + r ', ty, st), fs ' = _type, fs ' = _length, r ∈ []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
r -- fs ' ∈ st, okval(st[r -- fs '], fs .type), okval(val, fs .type), r ∈ st ⊦ fs ' = _type, fs ' = _length, junkrefs(str, r ', ty, st[r -- fs ', val]) ↔ junkrefs(str, r ', ty, st)

Rule argument

[emptyarg]

Additional information

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