Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:09:26 2013 Optimize a model with 5070 rows, 15260 columns and 40505 nonzeros Presolve removed 10 rows and 15 columns Presolve time: 0.28s Presolved: 5060 rows, 15245 columns, 30490 nonzeros Variable types: 10250 continuous, 4995 integer (4995 binary) Root relaxation: objective 9.876190e+03, 46 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 9876.18952 0 1 - 9876.18952 - - 0s 0 0 9876.29005 0 3 - 9876.29005 - - 0s 0 0 9876.30334 0 3 - 9876.30334 - - 0s H 0 0 9948.0757261 9876.30334 0.72% - 1s 0 2 9876.52756 0 3 9948.07573 9876.52756 0.72% - 1s * 229 205 201 9942.9596239 9916.63290 0.26% 1.1 2s 601 251 9917.14776 77 3 9942.95962 9916.69353 0.26% 1.7 5s 1637 325 9924.93156 120 2 9942.95962 9917.15511 0.26% 2.6 10s 5532 621 9929.92893 154 1 9942.95962 9919.84119 0.23% 2.2 15s 8731 924 9941.19531 85 2 9942.95962 9925.45529 0.18% 2.1 20s 10731 1282 9933.49950 179 1 9942.95962 9930.54125 0.12% 2.0 25s Cutting planes: Gomory: 1 Flow cover: 3 Explored 12186 nodes (24981 simplex iterations) in 27.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.942959623924e+03, best bound 9.941966123610e+03, gap 0.0100%