<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri",sans-serif;
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Windows x64 visual c++ debug build cbc 2.9.9<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>command line - cbc TaxerFailure.lp solve solu taxerFailure.txt (default strategy 1)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>results in:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Assertion failed: status != CoinWarmStartBasis::atLowerBound || originalModel_->getColLower()[i] > -originalModel_->getInfinity(), file ..\..\..\src\Osi\OsiPresolve.cpp, line 504<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>After apparently coming to optimum solution.<span style='color:#1F497D'> <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'>The same result occurs with an equivalent mps model.</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>Runs to completion with correct optimum in release build <span style='color:#1F497D'><o:p></o:p></span></b></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal>The nearly identical model TaxerSuccess.lp differs in 7 lines and finishes successfully.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Thanks for any attention you might be able to spare to this matter.<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><o:p> </o:p></p><p class=MsoNormal>C:\Users\jhowey\Google Drive\wealth\cbcdll\Cbc-2.9.9\Cbc\MSVisualStudio\v10\x64-v141-Debug>cbc TaxerFailure.lp solve solu taxerFailure.txt<o:p></o:p></p><p class=MsoNormal>Welcome to the CBC MILP Solver<o:p></o:p></p><p class=MsoNormal>Version: 2.9.9<o:p></o:p></p><p class=MsoNormal>Build Date: Sep 4 2017<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>command line - cbc TaxerFailure.lp solve solu taxerFailure.txt (default strategy 1)<o:p></o:p></p><p class=MsoNormal>CoinLpIO::readLp(): Maximization problem reformulated as minimization<o:p></o:p></p><p class=MsoNormal>Continuous objective value is -10198 - 0.00 seconds<o:p></o:p></p><p class=MsoNormal>Cgl0003I 0 fixed, 0 tightened bounds, 5 strengthened rows, 0 substitutions<o:p></o:p></p><p class=MsoNormal>Cgl0003I 0 fixed, 0 tightened bounds, 1 strengthened rows, 0 substitutions<o:p></o:p></p><p class=MsoNormal>Cgl0004I processed model has 18 rows, 24 columns (5 integer (5 of which binary)) and 64 elements<o:p></o:p></p><p class=MsoNormal>Cbc0038I Initial state - 0 integers unsatisfied sum - 0<o:p></o:p></p><p class=MsoNormal>Cbc0038I Solution found of -10198<o:p></o:p></p><p class=MsoNormal>Cbc0038I Relaxing continuous gives -10198<o:p></o:p></p><p class=MsoNormal>Cbc0038I Before mini branch and bound, 5 integers at bound fixed and 17 continuous<o:p></o:p></p><p class=MsoNormal>Cbc0038I Mini branch and bound did not improve solution (0.03 seconds)<o:p></o:p></p><p class=MsoNormal>Cbc0038I After 0.03 seconds - Feasibility pump exiting with objective of -10198 - took 0.00 seconds<o:p></o:p></p><p class=MsoNormal>Cbc0012I Integer solution of -10198.02 found by feasibility pump after 0 iterations and 0 nodes (0.03 seconds)<o:p></o:p></p><p class=MsoNormal>Cbc0001I Search completed - best objective -10198.0198019802, took 0 iterations and 0 nodes (0.03 seconds)<o:p></o:p></p><p class=MsoNormal>Cbc0035I Maximum depth 0, 0 variables fixed on reduced cost<o:p></o:p></p><p class=MsoNormal>Cuts at root node changed objective from -10198 to -10198<o:p></o:p></p><p class=MsoNormal>Probing was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>Gomory was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>Knapsack was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>Clique was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>MixedIntegerRounding2 was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>FlowCover was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>TwoMirCuts was tried 0 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds)<o:p></o:p></p><p class=MsoNormal>Assertion failed: status != CoinWarmStartBasis::atLowerBound || originalModel_->getColLower()[i] > -originalModel_->getInfinity(), file ..\..\..\src\Osi\OsiPresolve.cpp, line 504<o:p></o:p></p></div></body></html>