Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:57 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 4.642213e+04, 520 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                    47377.636012 46422.1265  2.02%     -    0s
     0     2 46422.1265    0    3 47377.6360 46422.1265  2.02%     -    0s
*   13     5               7    46743.553085 46743.1808  0.00%  25.5    0s

Explored 14 nodes (852 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674355308496e+04, best bound 4.674318078098e+04, gap 0.0008%