Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:49:04 2013 Optimize a model with 2400 rows, 101200 columns and 204100 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.39s Presolved: 2000 rows, 100900 columns, 203000 nonzeros Variable types: 100500 continuous, 400 integer (400 binary) Root relaxation: objective 7.543716e+05, 8777 iterations, 0.99 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 799636.19752 754371.571 5.66% - 1s 0 2 754398.449 0 4 799636.198 754398.449 5.66% - 2s 16 18 755451.391 16 1 799636.198 754504.147 5.64% 78.9 5s H 22 9 755674.17564 754504.147 0.15% 65.1 5s Explored 70 nodes (14420 simplex iterations) in 9.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556741756437e+05, best bound 7.556741756437e+05, gap 0.0%