Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:09 2013

Optimize a model with 30855 rows, 30305 columns and 121055 nonzeros
Presolve removed 1853 rows and 0 columns
Presolve time: 0.18s
Presolved: 29002 rows, 30305 columns, 117349 nonzeros
Variable types: 30250 continuous, 55 integer (55 binary)

Root relaxation: objective 5.239944e+04, 4547 iterations, 0.51 seconds

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

     0     0 52399.4412    0    1          - 52399.4412     -      -    0s
H    0     0                    52514.000000 52399.4412  0.22%     -    0s
     0     0 52401.1397    0    2 52514.0000 52401.1397  0.21%     -    0s
     0     0 52401.1397    0    1 52514.0000 52401.1397  0.21%     -    1s
     0     0 52401.1397    0    2 52514.0000 52401.1397  0.21%     -    2s
     0     2 52405.5688    0    2 52514.0000 52405.5688  0.21%     -    2s
*    3     0               2    52507.000000 52507.0000   0.0%   112    2s

Cutting planes:
  Gomory: 1

Explored 4 nodes (7071 simplex iterations) in 2.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.250700000000e+04, best bound 5.250700000000e+04, gap 0.0%