Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:32:58 2013 Optimize a model with 2400 rows, 102800 columns and 215900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.30s Presolved: 2300 rows, 102700 columns, 213800 nonzeros Variable types: 102200 continuous, 500 integer (500 binary) Root relaxation: objective 8.951303e+05, 6730 iterations, 0.59 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 12 - 895130.293 - - 1s H 0 0 1195081.8309 895130.293 25.1% - 1s H 0 0 904168.72589 895130.293 1.00% - 1s 0 0 895191.950 0 12 904168.726 895191.950 0.99% - 1s 0 0 895215.134 0 12 904168.726 895215.134 0.99% - 2s 0 0 895234.473 0 12 904168.726 895234.473 0.99% - 2s 0 0 895238.740 0 12 904168.726 895238.740 0.99% - 2s 0 0 895242.904 0 14 904168.726 895242.904 0.99% - 2s 0 0 895242.904 0 14 904168.726 895242.904 0.99% - 3s 0 0 895249.925 0 13 904168.726 895249.925 0.99% - 3s 0 0 895253.187 0 14 904168.726 895253.187 0.99% - 4s 0 0 895253.526 0 14 904168.726 895253.526 0.99% - 4s 0 0 895254.073 0 14 904168.726 895254.073 0.99% - 5s 0 0 895256.738 0 13 904168.726 895256.738 0.99% - 5s 0 0 895257.914 0 14 904168.726 895257.914 0.99% - 5s 0 0 895258.093 0 13 904168.726 895258.093 0.99% - 6s 0 0 895258.216 0 14 904168.726 895258.216 0.99% - 6s 0 0 895258.423 0 14 904168.726 895258.423 0.99% - 7s 0 0 895258.423 0 14 904168.726 895258.423 0.99% - 9s 0 2 895268.906 0 14 904168.726 895268.906 0.98% - 10s 16 16 896039.478 16 3 904168.726 895593.781 0.95% 48.7 15s H 27 13 899942.46551 895593.781 0.48% 35.1 16s 46 16 897427.393 46 3 899942.466 895593.781 0.48% 28.8 20s H 81 23 899433.61993 895593.781 0.43% 24.5 24s 92 24 896211.391 1 9 899433.620 895705.601 0.41% 28.5 25s 145 61 896751.761 3 3 899433.620 896471.884 0.33% 40.7 30s 154 64 898340.280 12 3 899433.620 896471.884 0.33% 44.7 35s H 162 61 898835.47127 896471.884 0.26% 45.6 36s * 184 18 14 896949.94038 896546.546 0.04% 44.2 37s * 192 6 13 896634.43616 896546.546 0.01% 44.7 38s Cutting planes: Flow cover: 27 Explored 193 nodes (17740 simplex iterations) in 38.90 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%