Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:25:13 2013 Optimize a model with 1600 rows, 100800 columns and 201700 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.25s Presolved: 1400 rows, 100500 columns, 201000 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 8.951303e+05, 6956 iterations, 0.64 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 915138.15793 895130.293 2.19% - 1s 0 0 895191.950 0 4 915138.158 895191.950 2.18% - 1s 0 0 895215.672 0 4 915138.158 895215.672 2.18% - 2s 0 0 895238.714 0 4 915138.158 895238.714 2.17% - 2s 0 0 895245.330 0 4 915138.158 895245.330 2.17% - 2s 0 0 895247.653 0 4 915138.158 895247.653 2.17% - 2s 0 0 895248.710 0 4 915138.158 895248.710 2.17% - 3s 0 0 895255.464 0 4 915138.158 895255.464 2.17% - 3s 0 0 895255.464 0 4 915138.158 895255.464 2.17% - 3s 0 0 895258.866 0 4 915138.158 895258.866 2.17% - 3s 0 0 895259.235 0 4 915138.158 895259.235 2.17% - 4s 0 0 895259.716 0 4 915138.158 895259.716 2.17% - 4s 0 0 895259.778 0 4 915138.158 895259.778 2.17% - 5s 0 0 895259.839 0 4 915138.158 895259.839 2.17% - 5s 0 0 895259.839 0 4 915138.158 895259.839 2.17% - 5s 0 2 895262.870 0 4 915138.158 895262.870 2.17% - 6s * 11 4 11 895998.28922 895873.196 0.01% 52.8 7s Cutting planes: Flow cover: 21 Explored 14 nodes (8525 simplex iterations) in 7.77 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 0.0%