Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:40:14 2013 Optimize a model with 5160 rows, 11030 columns and 37050 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.23s Presolved: 5150 rows, 11020 columns, 32040 nonzeros Variable types: 6020 continuous, 5000 integer (5000 binary) Root relaxation: objective 2.337984e+04, 140 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23379.8401 0 2 - 23379.8401 - - 0s 0 0 23393.6051 0 2 - 23393.6051 - - 0s 0 0 23398.8737 0 2 - 23398.8737 - - 0s 0 0 23400.0317 0 3 - 23400.0317 - - 0s 0 0 23402.7935 0 2 - 23402.7935 - - 0s 0 0 23404.9694 0 3 - 23404.9694 - - 0s 0 0 23405.2705 0 4 - 23405.2705 - - 1s 0 0 23406.0186 0 2 - 23406.0186 - - 1s 0 0 23406.7077 0 4 - 23406.7077 - - 1s 0 0 23407.8884 0 4 - 23407.8884 - - 1s 0 0 23411.1309 0 5 - 23411.1309 - - 1s 0 0 23412.4341 0 2 - 23412.4341 - - 1s 0 0 23413.3277 0 9 - 23413.3277 - - 1s 0 0 23414.2403 0 10 - 23414.2403 - - 1s 0 0 23414.2650 0 10 - 23414.2650 - - 1s 0 0 23414.2850 0 10 - 23414.2850 - - 1s 0 0 23414.3451 0 10 - 23414.3451 - - 1s 0 0 23414.3451 0 10 - 23414.3451 - - 1s H 0 0 23620.127542 23414.3451 0.87% - 1s 0 2 23414.3451 0 10 23620.1275 23414.3451 0.87% - 1s * 23 5 12 23527.308995 23527.3080 0.00% 7.9 2s Cutting planes: Gomory: 2 Implied bound: 18 Flow cover: 5 Explored 24 nodes (636 simplex iterations) in 2.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.352730899529e+04, best bound 2.352730804390e+04, gap 0.0000%