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Proof step 6 from proof min-del-nlz-01 (previous step)

min(i ' -l i0) < 0, min(i ' -l i0) < i, 0 < i ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: list-del inst: intlista name: del-one-simp seq: i ≠ i0 ⊦ (* i) ' -l (* i0) = i ' subst: [i0, i] → [i0, i] flags: rewrite

Additional information

Used simplifier rules: min-empty: ⊦ min([]) = 0;%min-one: ⊦ min(i ') = i;%ls-01: ⊦ i < j → ¬ j < i; from specification int-basic1%one: ⊦ i ' -l i = []; from specification list-del[intlista] Used terms: i0, i