Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:42 2013 Optimize a model with 480 rows, 4240 columns and 8820 nonzeros Presolve removed 80 rows and 60 columns Presolve time: 0.01s Presolved: 400 rows, 4180 columns, 8600 nonzeros Variable types: 4100 continuous, 80 integer (80 binary) Root relaxation: objective 4.013975e+04, 357 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40139.7487 0 2 - 40139.7487 - - 0s H 0 0 40200.250789 40139.7487 0.15% - 0s 0 0 40147.6820 0 2 40200.2508 40147.6820 0.13% - 0s 0 0 40160.3474 0 1 40200.2508 40160.3474 0.10% - 0s 0 0 40189.6023 0 1 40200.2508 40189.6023 0.03% - 0s * 0 0 0 40192.884408 40192.8844 0.0% - 0s Explored 0 nodes (385 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.019288440837e+04, best bound 4.019288440837e+04, gap 0.0%