ss="r-out co"><span class="r-pr">#&gt;</span>  </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Feasible solution      1.91490153549 after         43 iter,         8 nodes (gap 9.2%)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Improved solution       2.0146497578 after         47 iter,        11 nodes (gap 6.1%)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> Improved solution      2.19038073724 after         59 iter,        20 nodes (gap 0.6%)</span>
<span clas