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<div>Folks,</div>
<div>We are using v 2.7.5 of the cbc.exe and passing it a .lp file to help solve the model.</div>
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<div>While using this we identified few things to be careful of</div>
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<li>Using < or > in an equation in subject to leads to a crash. Using <= or >= works. </li></ol>
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<li>i.e. A + B < 10 will not work</li><li>A + B <= 10 will work</li></ol>
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<li>When creating a constraint the format constraintName: constraintEquation the tool expects there to be no space between the constraint Name and the :</li></ol>
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<li>i.e. const1: A + B <=10 will work</li><li>const1 : A + B <= 10 will not work</li></ol>
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<li>If the objective has two entries for the same variable then the last coefficient is used instead of </li></ol>
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<li>i.e. in objective if I have 10 A – 3 A then only -3 A will be considered</li></ol>
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<div>we have modified our model generation to handle all these.</div>
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<div><b>Question:</b></div>
<div>Are there other such know special handling that we need to be aware of while generating a .LP file?</div>
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<div>Regards</div>
<div>Aditya</div>
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