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Proof step 2 from proof butmin-rewput (previous step)

⊦ st[a, d].butmin = st.butmin[a, d], a = st[a, d].min

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⊦ st[a, d] -- st[a, d].min = (st -- st.min)[a, d], a = st[a, d].min

Rule argument

Additional information

Used simplifier rules: Butmin: ⊦ st.butmin = st -- st.min;