Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:19:24 2013 Optimize a model with 1760 rows, 256160 columns and 512160 nonzeros Presolve time: 0.69s Presolved: 1760 rows, 256160 columns, 512160 nonzeros Variable types: 256000 continuous, 160 integer (160 binary) Root relaxation: objective 2.645874e+05, 7893 iterations, 0.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 264587.359 0 9 - 264587.359 - - 1s H 0 0 302735.00000 264587.359 12.6% - 2s H 0 0 268393.00000 264587.359 1.42% - 3s 0 0 265101.942 0 6 268393.000 265101.942 1.23% - 3s 0 0 265101.942 0 9 268393.000 265101.942 1.23% - 5s 0 0 265101.942 0 6 268393.000 265101.942 1.23% - 6s 0 0 265157.559 0 7 268393.000 265157.559 1.21% - 6s 0 0 265166.027 0 6 268393.000 265166.027 1.20% - 6s 0 0 265166.052 0 5 268393.000 265166.052 1.20% - 7s 0 0 265166.052 0 5 268393.000 265166.052 1.20% - 7s 0 0 265166.052 0 5 268393.000 265166.052 1.20% - 7s 0 2 265175.144 0 5 268393.000 265175.144 1.20% - 9s 4 6 265531.140 2 6 268393.000 265405.731 1.11% 293 10s H 7 7 267141.53410 265427.111 0.64% 203 10s H 8 8 267040.65574 265427.111 0.60% 198 10s H 17 15 266328.00000 265427.111 0.34% 165 12s * 24 15 21 266205.00000 265427.111 0.29% 123 12s H 30 14 266098.75789 265530.651 0.21% 116 12s H 31 15 266016.30097 265530.651 0.18% 114 12s * 37 18 13 265984.00000 265530.651 0.17% 100 13s 60 17 265665.557 6 2 265984.000 265631.540 0.13% 109 15s Cutting planes: Implied bound: 265 Flow cover: 12 Explored 112 nodes (26977 simplex iterations) in 18.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.659840000000e+05, best bound 2.659840000000e+05, gap 0.0%