Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:41:21 2013 Optimize a model with 1400 rows, 100500 columns and 201000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.25s Presolved: 1600 rows, 100600 columns, 201300 nonzeros Variable types: 100400 continuous, 200 integer (200 binary) Root relaxation: objective 8.951303e+05, 7642 iterations, 0.72 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 918879.15978 895130.293 2.58% - 1s H 0 0 915138.15793 895130.293 2.19% - 2s 0 0 895191.950 0 8 915138.158 895191.950 2.18% - 2s 0 0 895216.584 0 8 915138.158 895216.584 2.18% - 3s 0 0 895239.822 0 8 915138.158 895239.822 2.17% - 3s 0 0 895244.814 0 8 915138.158 895244.814 2.17% - 3s 0 0 895246.945 0 8 915138.158 895246.945 2.17% - 3s 0 0 895250.912 0 8 915138.158 895250.912 2.17% - 4s 0 0 895253.322 0 8 915138.158 895253.322 2.17% - 4s 0 0 895255.750 0 8 915138.158 895255.750 2.17% - 4s 0 0 895257.393 0 8 915138.158 895257.393 2.17% - 5s 0 0 895258.741 0 8 915138.158 895258.741 2.17% - 5s 0 0 895260.483 0 8 915138.158 895260.483 2.17% - 5s 0 0 895260.575 0 8 915138.158 895260.575 2.17% - 5s 0 0 895261.211 0 8 915138.158 895261.211 2.17% - 6s 0 0 895261.254 0 8 915138.158 895261.254 2.17% - 6s 0 0 895261.301 0 8 915138.158 895261.301 2.17% - 7s 0 0 895261.422 0 8 915138.158 895261.422 2.17% - 7s 0 0 895261.422 0 8 915138.158 895261.422 2.17% - 8s 0 0 895261.422 0 8 915138.158 895261.422 2.17% - 8s 0 0 895261.422 0 8 915138.158 895261.422 2.17% - 9s 0 2 895263.644 0 8 915138.158 895263.644 2.17% - 10s * 11 4 11 895998.28922 895818.379 0.02% 66.1 13s Cutting planes: Flow cover: 23 Explored 14 nodes (10434 simplex iterations) in 14.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.959982892213e+05, best bound 8.959982892213e+05, gap 0.0000%