Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:21:17 2013 Optimize a model with 1800 rows, 100600 columns and 201700 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.47s Presolved: 1400 rows, 100300 columns, 200900 nonzeros Variable types: 100200 continuous, 100 integer (100 binary) Root relaxation: objective 7.543716e+05, 4484 iterations, 0.50 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 2 754398.449 0 4 769316.286 754398.449 1.94% - 2s H 11 8 755652.87336 754504.147 0.15% 71.9 3s * 19 9 6 755409.65326 754995.078 0.05% 109 4s 27 5 755172.733 5 1 755409.653 755030.237 0.05% 95.2 5s Explored 35 nodes (7700 simplex iterations) in 5.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.554096532555e+05, best bound 7.554096532555e+05, gap 0.0%