Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:04:25 2013 Optimize a model with 2100 rows, 101300 columns and 204000 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 0.68s Presolved: 1900 rows, 101100 columns, 203300 nonzeros Variable types: 100700 continuous, 400 integer (400 binary) Root relaxation: objective 8.951303e+05, 7087 iterations, 1.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 4 - 895130.293 - - 1s H 0 0 960175.85629 895130.293 6.77% - 2s H 0 0 898400.46551 895130.293 0.36% - 2s 0 0 895191.950 0 4 898400.466 895191.950 0.36% - 2s 0 0 895215.672 0 4 898400.466 895215.672 0.35% - 3s 0 0 895238.453 0 4 898400.466 895238.453 0.35% - 3s 0 0 895243.996 0 4 898400.466 895243.996 0.35% - 3s 0 0 895247.363 0 4 898400.466 895247.363 0.35% - 3s 0 0 895252.344 0 4 898400.466 895252.344 0.35% - 3s 0 0 895253.877 0 4 898400.466 895253.877 0.35% - 4s 0 0 895255.572 0 4 898400.466 895255.572 0.35% - 4s 0 0 895256.510 0 4 898400.466 895256.510 0.35% - 4s 0 0 895257.942 0 4 898400.466 895257.942 0.35% - 4s 0 0 895257.942 0 4 898400.466 895257.942 0.35% - 5s 0 0 895258.250 0 4 898400.466 895258.250 0.35% - 5s 0 0 895258.345 0 4 898400.466 895258.345 0.35% - 6s 0 0 895258.345 0 4 898400.466 895258.345 0.35% - 6s 0 2 895265.536 0 4 898400.466 895265.536 0.35% - 7s 15 7 895834.808 15 1 898400.466 895526.232 0.32% 44.3 10s 48 11 896515.951 48 1 898400.466 895526.232 0.32% 25.8 15s H 54 5 897058.33532 895526.232 0.17% 24.4 16s 74 6 896582.089 3 1 897058.335 896471.884 0.07% 41.4 20s * 101 16 12 896949.94038 896545.797 0.05% 48.9 22s * 109 5 11 896634.43616 896566.609 0.01% 51.2 23s Cutting planes: Flow cover: 27 Explored 110 nodes (13539 simplex iterations) in 23.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.965666091756e+05, gap 0.0076%