="#type-state">state</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div><div class="spec-doc"><p><code>is_reachable s q</code> returns true iff <code>q</code> is a reachable state in <code>s</code>, <i>i.e.</i> if it can be reached from an initial state using the transitio relation.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-is_transition"><a href="#val-is_transition" class="anchor"></a><code><span><span class="keyword">val</span> is_transition : <spa