Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:39 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 4.642213e+04, 442 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 46422.1265    0    3          - 46422.1265     -      -    0s
H    0     0                    46797.542467 46422.1265  0.80%     -    0s
     0     2 46451.3656    0    3 46797.5425 46451.3656  0.74%     -    0s
H   10     1                    46739.727868 46595.1409  0.31%  20.8    0s

Explored 18 nodes (820 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.673972786769e+04, best bound 4.673972786769e+04, gap 0.0%