p a x0 p b a x1 x2 p x1 p a b a x1 x2 a b a x0 b a b x0 2.2 p a x0 p b a x1 x2 p x1 p a b a x1 x2 p a x0 p b a x1 x2 p a b a x1 x2 a b a x0 a b x0 p a x0 p b a x1 x2 a b a x1 true p a x0 p b a x1 x2 p a b a x1 x2 p a x0 p b a x1 x2 p x1 p a b a x1 x2 true a 1 1 1 b 1 1 2 p 2 2 0 p 2 2 23676 a 1 0 p a x0 p b a x1 x2 p x1 p a b a x1 x2 p a x0 p b a x1 x2 p x1 p a b a x1 x2 p a x0 p b a x1 x2 p x1 p a b a x1 x2 true Failed! NaTT certifiable-1.6