Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:28:33 2013 Optimize a model with 1600 rows, 100700 columns and 201900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.57s Presolved: 1500 rows, 100600 columns, 201500 nonzeros Variable types: 100500 continuous, 100 integer (100 binary) Root relaxation: objective 7.543716e+05, 6683 iterations, 0.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 4 - 754371.571 - - 1s H 0 0 769316.28576 754371.571 1.94% - 2s 0 0 754446.935 0 3 769316.286 754446.935 1.93% - 2s 0 0 754482.203 0 2 769316.286 754482.203 1.93% - 2s 0 0 754505.704 0 5 769316.286 754505.704 1.93% - 3s 0 0 754515.536 0 4 769316.286 754515.536 1.92% - 3s 0 0 754518.576 0 4 769316.286 754518.576 1.92% - 3s 0 0 754519.093 0 4 769316.286 754519.093 1.92% - 3s 0 0 754519.344 0 4 769316.286 754519.344 1.92% - 4s 0 0 754523.316 0 4 769316.286 754523.316 1.92% - 4s 0 0 754525.988 0 4 769316.286 754525.988 1.92% - 4s 0 0 754526.480 0 4 769316.286 754526.480 1.92% - 5s 0 0 754526.617 0 4 769316.286 754526.617 1.92% - 5s 0 0 754526.739 0 4 769316.286 754526.739 1.92% - 6s 0 0 754526.739 0 4 769316.286 754526.739 1.92% - 6s 0 2 754527.601 0 4 769316.286 754527.601 1.92% - 7s 16 18 755597.747 14 1 769316.286 754775.452 1.89% 86.1 10s * 26 10 24 755652.87336 754775.452 0.12% 54.4 10s * 40 16 13 755409.65326 754795.173 0.08% 66.7 12s 63 3 cutoff 4 755409.653 755247.444 0.02% 73.0 15s Cutting planes: Flow cover: 34 Explored 66 nodes (13143 simplex iterations) in 15.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.554096532555e+05, best bound 7.553544095102e+05, gap 0.0073%