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<div class="moz-cite-prefix">Ryan,<br>
<br>
Bug in Cbc. My first try gave correct result, but I managed to
get error. For small problems, Cbc will do a simpler faster
branch and bound on a portion of the tree. This is returning
infeasible - I will look into it.<br>
<br>
If you add -depth -100 (which means only go into this simpler
version at depth 100) then all looked fine.<br>
<br>
John Forrest<br>
On 27/12/17 18:37, Rhavar wrote:<br>
</div>
<blockquote type="cite"
cite="mid:wEJdFCqH7dWFQIUWSgGjrSlOLnuoiz1_mTpgEQhuUhqiobGTkqeoVirLLCouhjV2D-CqKcsJZtEuHLii2_tZ7ZY_1-vv7-hy-1B5eMsYuzE=@protonmail.com">
<div>I have a problem:<br>
</div>
<div><a
href="https://gist.github.com/RHavar/dfb9de631363ecb9e1c326fff5ebd09b"
moz-do-not-send="true">https://gist.github.com/RHavar/dfb9de631363ecb9e1c326fff5ebd09b</a><br>
</div>
<div><br>
</div>
<div>(lp file and solution file attached)<br>
</div>
<div><br>
</div>
<div>In the solution it says: "Optimal - objective value" but I
think I have found a superior solution by hand:<br>
</div>
<div><br>
</div>
<div><span class="s1"><span class="Apple-converted-space"> </span>o6
= 1</span><br>
</div>
<div>i22 = 1<br>
</div>
<div><br>
</div>
<div>Which gives a better objective (<span class="s1">70 instead
of </span>825)<br>
</div>
<div><br>
</div>
<div>--<br>
</div>
<div><br>
</div>
<div>So I guess my question is, does "Optimal - objective value"
mean that it's guaranteed to be the optimal solution? Or am I
doing something wrong? Or is there a bug in cbc? <br>
</div>
<div><br>
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<div><br>
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<div class="protonmail_signature_block">
<div class="protonmail_signature_block-user">
<div>-Ryan<br>
</div>
</div>
<div class="protonmail_signature_block-proton
protonmail_signature_block-empty"><br>
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<br>
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