\item \lect 
Given the following Kripke structure $\mathcal{K}$. Does the initial state $s_0$ of $\mathcal{K}$ satisfy the following formulas?
\begin{itemize}
    \item $\varphi_1 \coloneqq EXX(a\wedge b)$
    \item $\varphi_2 \coloneqq EXAX (a \wedge b)$
\end{itemize}
\begin{figure}[h!]
	\centering
  \includegraphics[width=0.63\textwidth]{figures/computation_tree.png}
	\caption{Left: Kripke structure of Example 7, Right: Corresponding computation tree}
	\label{fig3}
\end{figure}