*** Failed! Falsifiable (after 20 tests): Div (C 0) (Add (C 0) (C 0)) Generalization: Div (C _) (Add (C 0) (C 0)) Conditional Generalization: Div e1 (Add (C 0) (C 0)) when noDiv0 e1 *** Failed! Falsifiable (after 5 tests): Div (C 0) (C 0) Generalization: Div _ (C 0) Conditional Generalization: e1 when not (noDiv0 e1) False True