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\camil
\subsection{Minimal Bad Prefixes}
-%TODO: Given a formula of the form vw^\omega, can we find a n \in \mathbb{N} such that vw^n is a bad prefix?
\emph{NB: this section is not particularly about PLTL. It is better added as 4.4.3.}
Model checking tools, such as NuSMV, often give counterexamples in the form of $vw^\omega$, i.e., a finite prefix with a infinite loop.