WORST_CASE(?,O(n^1)) Solution: --------- "!EQ" :: ["A"(0) x "A"(0)] -(0)-> "A"(14) "0" :: [] -(0)-> "A"(0) "Cons" :: ["A"(3) x "A"(3)] -(3)-> "A"(3) "Cons" :: ["A"(8) x "A"(8)] -(8)-> "A"(8) "False" :: [] -(0)-> "A"(14) "False" :: [] -(0)-> "A"(12) "Nil" :: [] -(0)-> "A"(3) "Nil" :: [] -(0)-> "A"(8) "S" :: ["A"(0)] -(0)-> "A"(0) "True" :: [] -(0)-> "A"(14) "True" :: [] -(0)-> "A"(12) "goal" :: ["A"(15) x "A"(13)] -(16)-> "A"(7) "member" :: ["A"(7) x "A"(3)] -(13)-> "A"(14) "member[Ite][True][Ite]" :: ["A"(14) x "A"(7) x "A"(3)] -(11)-> "A"(14) "notEmpty" :: ["A"(8)] -(3)-> "A"(2) Cost Free Signatures: --------------------- "!EQ" :: ["A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) "0" :: [] -(0)-> "A"_cf(0) "Cons" :: ["A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) "False" :: [] -(0)-> "A"_cf(0) "Nil" :: [] -(0)-> "A"_cf(0) "S" :: ["A"_cf(0)] -(0)-> "A"_cf(0) "True" :: [] -(0)-> "A"_cf(0) "member" :: ["A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) "member[Ite][True][Ite]" :: ["A"_cf(0) x "A"_cf(0) x "A"_cf(0)] -(0)-> "A"_cf(0) Base Constructors: ------------------ "\"0\"_A" :: [] -(0)-> "A"(1) "\"Cons\"_A" :: ["A"(1) x "A"(1)] -(1)-> "A"(1) "\"False\"_A" :: [] -(0)-> "A"(1) "\"Nil\"_A" :: [] -(0)-> "A"(1) "\"S\"_A" :: ["A"(1)] -(1)-> "A"(1) "\"True\"_A" :: [] -(0)-> "A"(1)