| ⊦ (∅ ++ a ++ b).butmin.min = b, (∅ ++ a ++ b).butmin.min = a, a = b |
Used simplifier rules: bmin-two-02: ⊦ a < b → (∅ ++ b ++ a).butmin = ∅ ++ b;%min-one: ⊦ (∅ ++ a).min = a;%bmin-two-01: ⊦ a < b → (∅ ++ a ++ b).butmin = ∅ ++ b;%min-one: ⊦ (∅ ++ a).min = a;% ⊦ a ≠ b → (a < b ↔ ¬ b < a); (ss) Used formulas: b < a