Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:36:29 2013 Optimize a model with 1600 rows, 100600 columns and 201400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.55s Presolved: 1500 rows, 100500 columns, 201100 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 7.543716e+05, 6277 iterations, 0.72 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% - 1s 0 0 754447.230 0 4 769316.286 754447.230 1.93% - 2s 0 0 754486.614 0 2 769316.286 754486.614 1.93% - 3s 0 0 754510.144 0 5 769316.286 754510.144 1.92% - 3s 0 0 754519.657 0 4 769316.286 754519.657 1.92% - 4s 0 0 754519.657 0 4 769316.286 754519.657 1.92% - 4s 0 0 754519.657 0 4 769316.286 754519.657 1.92% - 5s 0 0 754520.069 0 4 769316.286 754520.069 1.92% - 5s 0 0 754522.472 0 4 769316.286 754522.472 1.92% - 6s 0 0 754523.605 0 4 769316.286 754523.605 1.92% - 6s 0 0 754523.605 0 4 769316.286 754523.605 1.92% - 7s 0 0 754524.860 0 4 769316.286 754524.860 1.92% - 7s 0 0 754525.531 0 4 769316.286 754525.531 1.92% - 7s 0 0 754525.672 0 4 769316.286 754525.672 1.92% - 8s 0 0 754525.746 0 4 769316.286 754525.746 1.92% - 8s 0 0 754525.810 0 4 769316.286 754525.810 1.92% - 9s 0 0 754525.834 0 4 769316.286 754525.834 1.92% - 9s 0 0 754525.834 0 4 769316.286 754525.834 1.92% - 10s 0 2 754526.158 0 4 769316.286 754526.158 1.92% - 11s 12 14 755495.942 10 2 769316.286 754799.888 1.89% 194 15s * 27 9 24 755652.87336 754799.888 0.11% 91.9 16s * 40 14 13 755409.65326 754832.475 0.08% 87.7 18s 51 9 cutoff 1 755409.653 754994.078 0.06% 102 20s Cutting planes: Flow cover: 44 Explored 65 nodes (14649 simplex iterations) in 21.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.554096532555e+05, best bound 7.553349058895e+05, gap 0.0099%