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: 0.03s
Presolved: 400 rows, 4180 columns, 8600 nonzeros
Variable types: 4100 continuous, 80 integer (80 binary)

Root relaxation: objective 4.636776e+04, 415 iterations, 0.02 seconds

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

     0     0 46367.7551    0    2          - 46367.7551     -      -    0s
H    0     0                    46670.673603 46367.7551  0.65%     -    0s
     0     2 46373.3805    0    2 46670.6736 46373.3805  0.64%     -    0s
H    3     2                    46650.426787 46589.9631  0.13%  18.3    0s

Explored 4 nodes (471 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665042678719e+04, best bound 4.665030921840e+04, gap 0.0003%