<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear SCIP mailing list<div class=""><br class=""></div><div class="">I just compiled the VRP example of the SCIP package, and I obtained the following output for eil22.vrp (part of the SCIP/VRP data files):</div><div class=""><br class=""></div><div class=""><div class="">(…)</div><div class=""></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> time | node | left |LP iter|LP it/n| mem |mdpt |frac |vars |cons |cols |rows |cuts |confs|strbr| dualbound | primalbound | gap </span></div></div><div class="">(…)</div><div class=""><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> 428s| 300 | 15 |554079 |1689.8 | 256M| 20 | 29 | 37k| 273 | 13k| 273 | 2 | 0 | 421 | 3.687105e+02 | 3.750000e+02 | 1.71%</span></div></div><div class=""><br class=""></div><div class=""><span class="" style="font-variant-ligatures: no-common-ligatures;"><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">SCIP Status : problem is solved [optimal solution found]</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Solving Time (sec) : 476.24</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Solving Nodes : 359</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Primal Bound : +3.75000000000000e+02 (23 solutions)</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Dual Bound : +3.75000000000000e+02</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Gap : 0.00 %</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">SCIP Status : problem is solved [optimal solution found]</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;">Total Time : 476.24</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> solving : 476.24</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> presolving : 0.00 (included in solving)</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> reading : 0.00</span></div><div class="" style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;"><span class="" style="font-variant-ligatures: no-common-ligatures;"> copying : 0.06 (3 #copies) (minimal 0.02, maximal 0.03, average 0.02)</span></div><div class="">(…)</div><div class=""><br class=""></div><div class="">I found it surprising that it took 428 seconds to solve this instance, which is typically solved within fractions of a second. Is this is similar to the behaviour you have observed? If not, any pointers to where I may have gone wrong would be greatly appreciated!</div><div class=""><br class=""></div><div class="">Many thanks</div><div class=""><br class=""></div><div class="">Shen</div></span></div></body></html>