xs). exists zs. b</code>, then the result of the instantiation is <code>b[e1 / x, e2 / y, elist / xs, _zs'/ zs]</code> for some fresh <code>_zs'</code>.</p></div></div><div class="odoc-spec"><div class="spec value" id="val-hpara_dll_instantiate" class="anchored"><a href="#val-hpara_dll_instantiate" class="anchor"></a><code><span><span class="keyword">val</span> hpara_dll_instantiate : 
  <span><a href="#type-hpara_dll">hpara_dll</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../../IR/Exp/i