  In this paper, we answer a question due to Y. Andr\'e related to B. Dwork's
conjecture on a specialization of the logarithmic growth of solutions of
$p$-adic linear differential equations. Precisely speaking, we explicitly
construct a $\nabla$-module $M$ over $\mathbb{Q}_p[[X]]_0$ of rank 2 such that
the left endpoint of the special log-growth Newton polygon of $M$ is strictly
above the left endpoint of the generic log-growth Newton polygon of $M$.
