Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:11:22 2013 Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros Presolve removed 50 rows and 2850 columns Presolve time: 0.22s Presolved: 1350 rows, 35400 columns, 140750 nonzeros Variable types: 35050 continuous, 350 integer (350 binary) Root relaxation: objective 1.824192e+05, 2895 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 4 - 182419.206 - - 0s 0 0 182434.907 0 4 - 182434.907 - - 0s 0 0 182435.973 0 4 - 182435.973 - - 0s 0 0 182435.973 0 4 - 182435.973 - - 0s 0 0 182435.973 0 4 - 182435.973 - - 1s 0 0 182436.013 0 4 - 182436.013 - - 1s 0 0 182437.233 0 8 - 182437.233 - - 1s 0 0 182437.233 0 8 - 182437.233 - - 1s 0 2 182440.875 0 8 - 182440.875 - - 3s 64 66 183699.265 61 4 - 182511.606 - 30.3 5s * 121 111 113 185705.89660 182511.606 1.72% 19.4 5s * 157 66 26 183727.12103 182540.768 0.65% 19.2 6s H 204 13 182882.00880 182674.966 0.11% 19.9 7s * 205 12 17 182879.22514 182674.966 0.11% 19.8 7s Cutting planes: Flow cover: 5 Explored 255 nodes (8570 simplex iterations) in 7.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828792251419e+05, best bound 1.828611570860e+05, gap 0.0099%