 is one of the progenitor states represented by the largest positive integer.</li>
<li><strong>&lsquo;tip_id&rsquo;</strong>: terminal types. Terminal types are represented by negative integers.</li>
<li><strong>&lsquo;merge&rsquo;</strong>: list of daughter state(s)/type(s) for each progenitor state.</li>
<li><strong>&lsquo;diff_time&rsquo;</strong>: time of progenitor state commitments. Terminal types have infinite time of commitment.</li>
<li><strong>&lsquo;diff_mode_probs&rsquo;</strong>: commitment bia