Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:18:04 2013 Optimize a model with 1760 rows, 256160 columns and 512160 nonzeros Presolve time: 0.66s Presolved: 1760 rows, 256160 columns, 512160 nonzeros Variable types: 256000 continuous, 160 integer (160 binary) Root relaxation: objective 2.535255e+05, 9725 iterations, 0.75 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 253525.520 0 10 - 253525.520 - - 1s H 0 0 285127.00000 253525.520 11.1% - 2s H 0 0 254976.00000 253525.520 0.57% - 3s 0 0 253745.783 0 6 254976.000 253745.783 0.48% - 3s 0 0 253745.783 0 10 254976.000 253745.783 0.48% - 5s 0 0 253745.783 0 6 254976.000 253745.783 0.48% - 5s 0 0 253768.059 0 4 254976.000 253768.059 0.47% - 6s 0 0 253780.967 0 6 254976.000 253780.967 0.47% - 6s 0 0 253789.575 0 5 254976.000 253789.575 0.47% - 6s 0 0 253790.164 0 4 254976.000 253790.164 0.47% - 7s 0 0 253790.164 0 4 254976.000 253790.164 0.47% - 7s 0 0 253790.164 0 4 254976.000 253790.164 0.47% - 7s 0 0 253790.164 0 4 254976.000 253790.164 0.47% - 7s 0 2 253800.143 0 4 254976.000 253800.143 0.46% - 8s 8 10 254008.767 7 3 254976.000 253904.945 0.42% 139 10s H 10 9 254202.66667 253904.945 0.12% 114 10s H 13 10 254202.41176 253904.945 0.12% 100 10s * 17 9 15 254122.00000 253904.945 0.09% 79.6 10s * 30 4 6 254001.00000 253938.324 0.02% 89.1 11s Cutting planes: Implied bound: 130 Flow cover: 4 Explored 33 nodes (19305 simplex iterations) in 11.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.540010000000e+05, best bound 2.539922262414e+05, gap 0.0035%