fact: CoInductive itree_similar : binary itree := | itree_similar_leaf : forall n, itree_similar (itree_leaf n) (itree_leaf n) | itree_similar_node : forall t11 t12 t21 t22 : itree, itree_similar t11 t21 -> itree_similar t12 t22 -> itree_similar (itree_node t11 t12) (itree_node t21 t22).
imports: TLC(LibTactics LibLogic LibReflect LibFun LibEpsilon LibList LibInt LibNat LibProd LibSum LibRelation LibWf LibFix LibStream) ZifyNat TLC.LibNat