Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:21 2013 Optimize a model with 360 rows, 4120 columns and 8340 nonzeros Presolve removed 80 rows and 60 columns Presolve time: 0.01s Presolved: 280 rows, 4060 columns, 8180 nonzeros Variable types: 4040 continuous, 20 integer (20 binary) Root relaxation: objective 3.860476e+04, 264 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38604.7615 0 3 - 38604.7615 - - 0s H 0 0 39520.421808 38604.7615 2.32% - 0s 0 2 38661.7653 0 3 39520.4218 38661.7653 2.17% - 0s H 3 3 38899.396328 38838.4029 0.16% 12.7 0s * 5 2 5 38852.147852 38838.4029 0.04% 11.4 0s Explored 8 nodes (362 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.885214785166e+04, best bound 3.885214785166e+04, gap 0.0%