Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:02:20 2013

Optimize a model with 19844 rows, 19404 columns and 77484 nonzeros
Presolve removed 1169 rows and 0 columns
Presolve time: 0.10s
Presolved: 18675 rows, 19404 columns, 75146 nonzeros
Variable types: 19360 continuous, 44 integer (44 binary)

Root relaxation: objective 5.133950e+04, 3602 iterations, 0.29 seconds

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

     0     0 51339.5000    0    1          - 51339.5000     -      -    0s
H    0     0                    51342.000000 51339.5000  0.00%     -    0s

Explored 0 nodes (3602 simplex iterations) in 0.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.134200000000e+04, best bound 5.133950000000e+04, gap 0.0049%