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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Please to ignore this.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I was manipulating readlp and failing to load my last SOS.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>All by design.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Sorry for the interruption.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>jkh<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> James Howey [mailto:james.howey@gmail.com] <br><b>Sent:</b> Monday, May 21, 2018 1:18 PM<br><b>To:</b> Cbc@list.coin-or.org<br><b>Subject:</b> results differ between log and printed result<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I solve a problem with preprocess on. The reported objective seems sensible.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cgl0013I Postprocessed model is infeasible - possible tolerance issue - try without preprocessing<o:p></o:p></p><p class=MsoNormal>2109 bounds tightened after postprocessing<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Result - Stopped on time limit<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Objective value: -479424.31287049<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Lower bound: -788211.087<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Gap: 0.39<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Enumerated nodes: 24677<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Total iterations: 1884812<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Time (CPU seconds): 701.38<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Time (Wallclock seconds): 701.38<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Total time (CPU seconds): 702.91 (Wallclock seconds): 702.91<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But consult the printed solution file and see a different, and incorrect, figure for the objective.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Stopped on time - objective value -16822582.00128270<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> 0 E_worth(29) 16822582 -1<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> 1 E_draw(0) -100000 0<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> 2 E_TX_draw(0) -100000 0<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Presumably, I am seeing the postprocessed solution<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Another example. Zero is the correct optimum:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Coin0505I Presolved problem not optimal, resolve after postsolve<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Cgl0013I Postprocessed model is infeasible - possible tolerance issue - try without preprocessing<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>2105 bounds tightened after postprocessing<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>91 relaxed row infeasibilities - summing to 2.5858e+06<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>420 relaxed row infeasibilities - summing to 5.11949e+09<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>308 relaxed row infeasibilities - summing to 2.30758e+09<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Result - Optimal solution found<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Objective value: 0.00000000<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Enumerated nodes: 322<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Total iterations: 25518<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Time (CPU seconds): 61.13<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'>Time (Wallclock seconds): 61.13<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Total time (CPU seconds): 62.66 (Wallclock seconds): 62.66<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Solution file looks like this.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in'>Optimal - objective value 1008468.84223082<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> 6 E_shrt(6) -53235.737 -1.110223e-16<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> 7 E_shrt(7) -57923 0<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'> 10 E_shrt(10) -57923 0<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I can provide the model on request.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This is latest trunk build (with or without the new special flag set)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I can’t be certain when this began, as I only recently tried preprocess again (which is awesome).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is this possibly by design?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there a way to turn postprocess off?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>jkh<o:p></o:p></p></div></body></html>