Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:10:48 2013 Optimize a model with 1400 rows, 38250 columns and 150750 nonzeros Presolve removed 50 rows and 2850 columns Presolve time: 0.21s Presolved: 1350 rows, 35400 columns, 140750 nonzeros Variable types: 35050 continuous, 350 integer (350 binary) Root relaxation: objective 1.959342e+05, 2287 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 12 - 195934.242 - - 0s 0 0 195952.885 0 12 - 195952.885 - - 0s 0 0 195953.483 0 12 - 195953.483 - - 0s 0 0 195953.483 0 12 - 195953.483 - - 0s 0 0 195953.483 0 12 - 195953.483 - - 0s 0 0 195953.483 0 12 - 195953.483 - - 0s 0 0 195953.483 0 12 - 195953.483 - - 1s 0 0 195953.483 0 12 - 195953.483 - - 1s 0 2 195962.670 0 12 - 195962.670 - - 3s 57 59 197997.945 52 4 - 195999.502 - 27.5 5s * 116 104 111 198954.61899 195999.502 1.49% 16.2 5s H 147 23 196566.53642 196134.889 0.22% 17.6 6s * 201 14 25 196565.57890 196512.390 0.03% 19.2 7s Cutting planes: Flow cover: 7 Explored 210 nodes (7456 simplex iterations) in 7.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965655788974e+05, best bound 1.965474317395e+05, gap 0.0092%