<div><a name="msg_ad291a9b4a55d107"></a>I'm a cbc beginner.I use cbc to solve the .lp file. The command is "cbcSolve.exe problem.lp -sec 200 -ratio 0.05 -solve -solu out.txt" .I met two problems. <br>First, I found that if I set the time big enough ( for example 1500),it can get the optimization. But if I set a short time, the solver runs for a long time which exceeds the time I set. It seemede that the time parameter I set didn't work. </div>
<div>Second, if I set a short time, sometimes it will run for some time and stopped. But the values in the out.txt file were wrong (the binary variable's value has decimal fraction), obviously it didn't get the feasible answer.But the first line of the out.txt said "Optimal - objective value 8437.9558", I can't get it. <br>
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