Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:33:04 2013 Optimize a model with 10800 rows, 45150 columns and 120250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.36s Presolved: 10750 rows, 45100 columns, 110200 nonzeros Variable types: 35100 continuous, 10000 integer (10000 binary) Root relaxation: objective 1.749223e+05, 3248 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174922.321 0 4 - 174922.321 - - 0s 0 0 174956.883 0 4 - 174956.883 - - 1s 0 0 174957.438 0 8 - 174957.438 - - 1s 0 0 174959.809 0 2 - 174959.809 - - 1s 0 0 174960.234 0 2 - 174960.234 - - 1s 0 0 174960.570 0 2 - 174960.570 - - 1s 0 0 174961.191 0 2 - 174961.191 - - 2s 0 0 174961.191 0 2 - 174961.191 - - 2s 0 2 174961.191 0 2 - 174961.191 - - 3s * 23 11 12 176767.92131 175445.653 0.75% 84.1 4s 25 7 175731.969 13 2 176767.921 175445.653 0.75% 77.9 5s 197 11 176058.264 182 2 176767.921 175445.653 0.75% 17.8 10s 355 17 176359.444 337 2 176767.921 175445.653 0.75% 14.0 15s 535 17 176397.782 517 2 176767.921 175445.653 0.75% 10.2 20s 715 21 176468.425 695 2 176767.921 175445.653 0.75% 8.5 25s 894 21 176644.873 874 2 176767.921 175445.653 0.75% 7.4 30s H 972 17 176553.09568 175625.993 0.53% 7.9 32s H 1081 6 176230.62994 176141.642 0.05% 8.1 33s 1149 4 176228.695 88 2 176230.630 176141.642 0.05% 7.8 35s H 1324 4 176210.45151 176204.021 0.00% 7.1 39s Cutting planes: Gomory: 1 Implied bound: 45 Flow cover: 1 Explored 1324 nodes (14388 simplex iterations) in 39.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.762104515062e+05, best bound 1.762040212316e+05, gap 0.0036%