Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:59 2013

Optimize a model with 280 rows, 4460 columns and 9280 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 260 rows, 4440 columns, 8860 nonzeros
Variable types: 4440 continuous, 0 integer (0 binary)

Root relaxation: objective 4.013975e+04, 370 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                    40195.297155 40139.7487  0.14%     -    0s
     0     2 40139.7487    0    2 40195.2972 40139.7487  0.14%     -    0s

Explored 21 nodes (411 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019529715470e+04, best bound 4.019128626121e+04, gap 0.0100%