WORST_CASE(?,O(n^2)) Solution: --------- "Cons" :: ["A"(0, 11) x "A"(11, 11)] -(11)-> "A"(0, 11) "Cons" :: ["A"(0, 0) x "A"(1, 0)] -(1)-> "A"(1, 0) "Cons" :: ["A"(0, 0) x "A"(2, 0)] -(2)-> "A"(2, 0) "Cons" :: ["A"(0, 0) x "A"(0, 0)] -(0)-> "A"(0, 0) "False" :: [] -(0)-> "A"(4, 12) "Nil" :: [] -(0)-> "A"(2, 0) "Nil" :: [] -(0)-> "A"(0, 11) "Nil" :: [] -(0)-> "A"(1, 0) "Nil" :: [] -(0)-> "A"(12, 10) "Nil" :: [] -(0)-> "A"(8, 8) "True" :: [] -(0)-> "A"(2, 13) "app" :: ["A"(1, 0) x "A"(0, 0)] -(1)-> "A"(0, 0) "goal" :: ["A"(14, 13)] -(8)-> "A"(0, 0) "naiverev" :: ["A"(0, 11)] -(1)-> "A"(0, 0) "notEmpty" :: ["A"(2, 0)] -(12)-> "A"(0, 2) Cost Free Signatures: --------------------- "Cons" :: ["A"_cf(0, 0) x "A"_cf(11, 0)] -(11)-> "A"_cf(11, 0) "Cons" :: ["A"_cf(0, 0) x "A"_cf(1, 0)] -(1)-> "A"_cf(1, 0) "Cons" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0) "Nil" :: [] -(0)-> "A"_cf(11, 0) "Nil" :: [] -(0)-> "A"_cf(1, 0) "Nil" :: [] -(0)-> "A"_cf(8, 8) "Nil" :: [] -(0)-> "A"_cf(2, 8) "Nil" :: [] -(0)-> "A"_cf(0, 0) "app" :: ["A"_cf(1, 0) x "A"_cf(1, 0)] -(0)-> "A"_cf(1, 0) "app" :: ["A"_cf(0, 0) x "A"_cf(0, 0)] -(0)-> "A"_cf(0, 0) "naiverev" :: ["A"_cf(11, 0)] -(9)-> "A"_cf(1, 0) Base Constructors: ------------------ "\"Cons\"_A" :: ["A"(0, 0) x "A"(1, 0)] -(1)-> "A"(1, 0) "\"Cons\"_A" :: ["A"(0, 1) x "A"(1, 1)] -(1)-> "A"(0, 1) "\"False\"_A" :: [] -(0)-> "A"(1, 0) "\"False\"_A" :: [] -(0)-> "A"(0, 1) "\"Nil\"_A" :: [] -(0)-> "A"(1, 0) "\"Nil\"_A" :: [] -(0)-> "A"(0, 1) "\"True\"_A" :: [] -(0)-> "A"(1, 0) "\"True\"_A" :: [] -(0)-> "A"(0, 1)