Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:21:39 2013 Optimize a model with 2400 rows, 107100 columns and 233100 nonzeros Presolve removed 100 rows and 2500 columns Presolve time: 0.27s Presolved: 2300 rows, 104600 columns, 229100 nonzeros Variable types: 104100 continuous, 500 integer (500 binary) Root relaxation: objective 7.918217e+05, 6167 iterations, 0.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791821.709 0 6 - 791821.709 - - 0s 0 0 791887.897 0 6 - 791887.897 - - 1s 0 0 791951.423 0 6 - 791951.423 - - 1s 0 0 791951.711 0 6 - 791951.711 - - 1s 0 0 791951.763 0 6 - 791951.763 - - 2s 0 0 791954.364 0 6 - 791954.364 - - 2s 0 0 791956.871 0 6 - 791956.871 - - 2s 0 0 791959.346 0 6 - 791959.346 - - 2s 0 0 791961.601 0 6 - 791961.601 - - 3s 0 0 791961.643 0 6 - 791961.643 - - 3s 0 0 791962.622 0 6 - 791962.622 - - 3s 0 0 791963.291 0 6 - 791963.291 - - 3s 0 0 791963.291 0 6 - 791963.291 - - 4s H 0 0 802039.54298 791963.291 1.26% - 5s 0 2 791963.291 0 6 802039.543 791963.291 1.26% - 6s 26 26 793336.833 24 3 802039.543 792576.606 1.18% 64.4 10s H 27 25 801225.91716 792576.606 1.08% 62.0 10s H 54 29 794433.73137 792576.606 0.23% 41.5 14s 57 31 793789.122 55 4 794433.731 792576.606 0.23% 39.8 15s 130 48 792999.852 12 3 794433.731 792652.141 0.22% 23.1 20s H 135 25 793613.97106 792652.141 0.12% 23.2 20s * 141 26 22 793505.77764 792652.141 0.11% 23.9 21s * 223 13 7 793200.24980 792853.805 0.04% 25.4 24s 243 12 793184.422 9 2 793200.250 792945.003 0.03% 25.6 25s Cutting planes: Flow cover: 19 Explored 252 nodes (15832 simplex iterations) in 25.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.932002498024e+05, best bound 7.931519126106e+05, gap 0.0061%