Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:40:27 2013 Optimize a model with 1400 rows, 100500 columns and 201000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.15s Presolved: 1600 rows, 100600 columns, 201300 nonzeros Variable types: 100400 continuous, 200 integer (200 binary) Root relaxation: objective 7.543716e+05, 6095 iterations, 0.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 8 - 754371.571 - - 0s H 0 0 804438.92334 754371.571 6.22% - 1s H 0 0 769316.28576 754371.571 1.94% - 1s H 0 0 756924.20823 754371.571 0.34% - 2s 0 0 754448.329 0 8 756924.208 754448.329 0.33% - 2s 0 0 754487.221 0 4 756924.208 754487.221 0.32% - 2s 0 0 754510.771 0 10 756924.208 754510.771 0.32% - 3s 0 0 754519.946 0 8 756924.208 754519.946 0.32% - 3s 0 0 754519.946 0 8 756924.208 754519.946 0.32% - 3s 0 0 754520.263 0 8 756924.208 754520.263 0.32% - 3s 0 0 754526.530 0 8 756924.208 754526.530 0.32% - 4s 0 0 754526.530 0 8 756924.208 754526.530 0.32% - 4s 0 0 754527.525 0 8 756924.208 754527.525 0.32% - 4s 0 0 754528.752 0 8 756924.208 754528.752 0.32% - 4s 0 0 754529.975 0 8 756924.208 754529.975 0.32% - 5s 0 0 754530.158 0 8 756924.208 754530.158 0.32% - 5s 0 0 754530.325 0 8 756924.208 754530.325 0.32% - 5s 0 0 754530.345 0 8 756924.208 754530.345 0.32% - 5s 0 0 754530.455 0 8 756924.208 754530.455 0.32% - 6s 0 0 754530.455 0 8 756924.208 754530.455 0.32% - 6s 0 2 754530.738 0 8 756924.208 754530.738 0.32% - 7s * 16 10 14 755652.87336 754786.957 0.11% 96.8 9s 19 9 755199.900 3 4 755652.873 754801.639 0.11% 119 10s H 27 12 755409.65326 754801.639 0.08% 102 10s Cutting planes: Flow cover: 48 Explored 50 nodes (12880 simplex iterations) in 13.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.554096532555e+05, best bound 7.553411036145e+05, gap 0.0091%