Hello Nicolas:
Maybe your problem is infeasible.I have tested this problem through the other solvers,like BARON and COUENNE,their results show it is a infeasible problem.You can check out whether your problem is correct.
Best Wishes,
From Wei.<br /><BR>
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<DIV style="FONT: 9pt 宋体; font-size-adjust: none; font-stretch: normal">----- 原文 ----- </DIV><BR><B>发件人:</B> <A hideFocus mce_href="mailto:nicolas.derhy@engie.com" xhref="mailto:nicolas.derhy@engie.com">nicolas.derhy@engie.com</A> <BR><B>主 题:</B> [SCIP] TR: scip crash<BR><B>时 间:</B> 2016年7月4日 22:27:32<BR><BR>
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<P>Hi everyone,
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<P><SPAN>I am using scip-3.2.1.win.x86.msvc.opt.spx.mt.exe for solving some MIP instances on Win 7 computer.
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<P><SPAN>First, everything worked perfectly but I recently met unexpected errors from the solver.
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<P><SPAN>Attached to this message, a mps file where Scip stops suddenly.
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<P><SPAN>I obtain this kind of log :
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">presolving:
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 1, fast) 338 del vars, 1535 del conss, 0 add conss, 840 chg bounds, 289 chg sides, 684 chg coeffs, 0 upgd conss, 234 impls, 23 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 2, fast) 1016 del vars, 1665 del conss, 0 add conss, 852 chg bounds, 298 chg sides, 816 chg coeffs, 0 upgd conss, 234 impls, 23 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 3, fast) 1062 del vars, 1719 del conss, 0 add conss, 860 chg bounds, 302 chg sides, 824 chg coeffs, 0 upgd conss, 234 impls, 17 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 4, fast) 1075 del vars, 1733 del conss, 0 add conss, 869 chg bounds, 302 chg sides, 829 chg coeffs, 0 upgd conss, 234 impls, 16 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 5, fast) 1075 del vars, 1734 del conss, 0 add conss, 869 chg bounds, 303 chg sides, 832 chg coeffs, 0 upgd conss, 234 impls, 16 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 6, fast) 1076 del vars, 1735 del conss, 0 add conss, 869 chg bounds, 303 chg sides, 832 chg coeffs, 0 upgd conss, 234 impls, 16 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 7, fast) 1076 del vars, 1735 del conss, 0 add conss, 884 chg bounds, 303 chg sides, 832 chg coeffs, 0 upgd conss, 234 impls, 16 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 8, fast) 1080 del vars, 1796 del conss, 0 add conss, 884 chg bounds, 310 chg sides, 885 chg coeffs, 0 upgd conss, 234 impls, 16 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 9, fast) 1093 del vars, 1809 del conss, 0 add conss, 884 chg bounds, 310 chg sides, 885 chg coeffs, 0 upgd conss, 238 impls, 12 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 10, exhaustive) 1093 del vars, 1824 del conss, 0 add conss, 884 chg bounds, 310 chg sides, 885 chg coeffs, 0 upgd conss, 238 impls, 12 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 11, fast) 1105 del vars, 1827 del conss, 0 add conss, 884 chg bounds, 310 chg sides, 887 chg coeffs, 0 upgd conss, 238 impls, 12 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 12, fast) 1113 del vars, 1834 del conss, 0 add conss, 884 chg bounds, 316 chg sides, 888 chg coeffs, 0 upgd conss, 238 impls, 10 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 13, fast) 1125 del vars, 1840 del conss, 0 add conss, 884 chg bounds, 318 chg sides, 888 chg coeffs, 0 upgd conss, 238 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 14, fast) 1126 del vars, 1841 del conss, 0 add conss, 884 chg bounds, 318 chg sides, 888 chg coeffs, 0 upgd conss, 238 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 15, exhaustive) 1126 del vars, 1841 del conss, 0 add conss, 885 chg bounds, 319 chg sides, 889 chg coeffs, 0 upgd conss, 238 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 16, exhaustive) 1126 del vars, 1841 del conss, 0 add conss, 885 chg bounds, 319 chg sides, 889 chg coeffs, 121 upgd conss, 238 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 17, medium) 1126 del vars, 1841 del conss, 0 add conss, 889 chg bounds, 319 chg sides, 889 chg coeffs, 121 upgd conss, 294 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 18, fast) 1132 del vars, 1847 del conss, 0 add conss, 891 chg bounds, 322 chg sides, 892 chg coeffs, 121 upgd conss, 294 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 19, fast) 1135 del vars, 1854 del conss, 0 add conss, 891 chg bounds, 322 chg sides, 892 chg coeffs, 121 upgd conss, 294 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 20, exhaustive) 1135 del vars, 1854 del conss, 0 add conss, 891 chg bounds, 322 chg sides, 892 chg coeffs, 142 upgd conss, 294 impls, 9 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> (0.1s) probing cycle finished: starting next cycle
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 21, exhaustive) 1144 del vars, 1854 del conss, 0 add conss, 909 chg bounds, 322 chg sides, 892 chg coeffs, 142 upgd conss, 430 impls, 21 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 22, fast) 1148 del vars, 1866 del conss, 0 add conss, 913 chg bounds, 327 chg sides, 917 chg coeffs, 142 upgd conss, 430 impls, 21 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 23, exhaustive) 1148 del vars, 1870 del conss, 0 add conss, 913 chg bounds, 329 chg sides, 917 chg coeffs, 142 upgd conss, 430 impls, 21 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> (0.1s) probing cycle finished: starting next cycle
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(round 24, exhaustive) 1178 del vars, 1897 del conss, 0 add conss, 913 chg bounds, 329 chg sides, 917 chg coeffs, 142 upgd conss, 457 impls, 23 clqs
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> (0.1s) probing: 43/109 (39.4%) - 9 fixings, 0 aggregations, 173 implications, 18 bound changes
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> (0.1s) probing aborted: 50/50 successive totally useless probings
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">presolving (25 rounds: 25 fast, 9 medium, 8 exhaustive):
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">1178 deleted vars, 1897 deleted constraints, 0 added constraints, 913 tightened bounds, 0 added holes, 329 changed sides, 917 changed coefficients
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">457 implications, 23 cliques
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">presolved problem has 284 variables (99 bin, 0 int, 0 impl, 185 cont) and 307 constraints
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> 108 constraints of type <varbound>
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> 199 constraints of type <linear>
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">Presolving Time: 0.08
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(node 1) unresolved numerical troubles in LP 1 -- using pseudo solution instead (loop 1)
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">time | node | left |LP iter|LP it/n| mem |mdpt |frac |vars |cons |cols |rows |cuts |confs|strbr| dualbound | primalbound | gap
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt"> 0.1s| 1 | 2 | 84 | - |4112k| 0 | - | 284 | 309 | 284 | 307 | 0 | 2 | 0 | -- | -- | Inf
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<P style="MARGIN-LEFT: 35.4pt"><SPAN style="FONT-SIZE: 9pt">(node 73) forcing the solution of an LP (last LP 99)...
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<P><SPAN>I do not know what to do to avoid this crash.
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<P><SPAN>If someone has any idea (modifying some parameters ?), it would be great !
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<P><SPAN>Best regards,
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<P><SPAN>Nicolas
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