Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:09:10 2013 Optimize a model with 2000 rows, 101100 columns and 203800 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.44s Presolved: 1900 rows, 101000 columns, 203200 nonzeros Variable types: 100700 continuous, 300 integer (300 binary) Root relaxation: objective 8.951303e+05, 7045 iterations, 1.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 8 - 895130.293 - - 1s H 0 0 960175.85629 895130.293 6.77% - 1s 0 0 895191.950 0 8 960175.856 895191.950 6.77% - 2s H 0 0 898400.46551 895191.950 0.36% - 2s 0 0 895215.405 0 8 898400.466 895215.405 0.35% - 2s 0 0 895237.822 0 8 898400.466 895237.822 0.35% - 3s 0 0 895244.638 0 8 898400.466 895244.638 0.35% - 3s 0 0 895247.630 0 8 898400.466 895247.630 0.35% - 3s 0 0 895247.708 0 8 898400.466 895247.708 0.35% - 4s 0 0 895255.350 0 8 898400.466 895255.350 0.35% - 4s 0 0 895255.540 0 8 898400.466 895255.540 0.35% - 5s 0 0 895257.683 0 8 898400.466 895257.683 0.35% - 5s 0 0 895260.775 0 8 898400.466 895260.775 0.35% - 6s 0 0 895260.775 0 8 898400.466 895260.775 0.35% - 6s 0 0 895260.775 0 8 898400.466 895260.775 0.35% - 6s 0 0 895260.775 0 8 898400.466 895260.775 0.35% - 7s 0 0 895260.775 0 8 898400.466 895260.775 0.35% - 8s 0 2 895262.657 0 8 898400.466 895262.657 0.35% - 9s 2 3 895526.232 2 2 898400.466 895526.232 0.32% 205 10s 25 8 896498.161 25 2 898400.466 895778.849 0.29% 44.1 15s * 39 6 39 897058.33532 895778.849 0.14% 34.7 17s 47 7 896471.884 2 2 897058.335 896471.884 0.07% 60.0 20s * 80 7 11 896634.43616 896546.546 0.01% 54.0 22s Cutting planes: Flow cover: 24 Explored 81 nodes (12838 simplex iterations) in 22.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.965465455964e+05, gap 0.0098%