Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:39:40 2013 Optimize a model with 1400 rows, 100500 columns and 201000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.15s Presolved: 1600 rows, 100600 columns, 201300 nonzeros Variable types: 100400 continuous, 200 integer (200 binary) Root relaxation: objective 8.654105e+05, 7127 iterations, 0.70 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 4 - 865410.545 - - 0s H 0 0 902186.21744 865410.545 4.08% - 1s H 0 0 876482.34250 865410.545 1.26% - 1s 0 0 865463.744 0 4 876482.342 865463.744 1.26% - 2s 0 0 865500.253 0 4 876482.342 865500.253 1.25% - 2s 0 0 865511.649 0 4 876482.342 865511.649 1.25% - 2s 0 0 865521.973 0 4 876482.342 865521.973 1.25% - 2s 0 0 865525.804 0 4 876482.342 865525.804 1.25% - 3s 0 0 865534.139 0 4 876482.342 865534.139 1.25% - 3s 0 0 865534.139 0 4 876482.342 865534.139 1.25% - 3s 0 0 865534.139 0 4 876482.342 865534.139 1.25% - 4s 0 0 865534.140 0 4 876482.342 865534.140 1.25% - 4s 0 0 865535.607 0 2 876482.342 865535.607 1.25% - 4s 0 0 865535.950 0 2 876482.342 865535.950 1.25% - 4s 0 0 865536.344 0 2 876482.342 865536.344 1.25% - 5s 0 0 865536.441 0 2 876482.342 865536.441 1.25% - 5s 0 0 865536.574 0 2 876482.342 865536.574 1.25% - 5s 0 0 865536.604 0 2 876482.342 865536.604 1.25% - 5s 0 0 865536.617 0 2 876482.342 865536.617 1.25% - 5s 0 0 865536.624 0 2 876482.342 865536.624 1.25% - 6s 0 0 865536.624 0 2 876482.342 865536.624 1.25% - 6s 0 2 865542.876 0 2 876482.342 865542.876 1.25% - 6s * 13 5 12 866731.75201 866353.657 0.04% 108 9s 19 2 866690.964 3 2 866731.752 866563.837 0.02% 139 10s Cutting planes: Flow cover: 22 Explored 22 nodes (12315 simplex iterations) in 10.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.667317520100e+05, best bound 8.667317520100e+05, gap 0.0000%