Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:21:59 2013

Optimize a model with 30910 rows, 30360 columns and 121110 nonzeros
Presolve removed 55 rows and 0 columns
Presolve time: 0.13s
Presolved: 30855 rows, 30360 columns, 121055 nonzeros
Variable types: 30305 continuous, 55 integer (55 binary)

Root relaxation: objective 4.492631e+04, 3137 iterations, 1.02 seconds

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

     0     0 44926.3127    0   43          - 44926.3127     -      -    1s
H    0     0                    64079.000000 44926.3127  29.9%     -    1s
     0     0 53506.3601    0    9 64079.0000 53506.3601  16.5%     -    3s
H    0     0                    59961.258663 53506.3601  10.8%     -    3s
H    0     0                    58077.000000 53506.3601  7.87%     -    3s
H    0     0                    54314.000000 53506.3601  1.49%     -    3s
     0     0 53985.6428    0    5 54314.0000 53985.6428  0.60%     -    3s
H    0     0                    54094.000000 53985.6428  0.20%     -    3s
     0     0 54079.8587    0    2 54094.0000 54079.8587  0.03%     -    4s
     0     0 54080.8235    0    1 54094.0000 54080.8235  0.02%     -    4s
     0     2 54080.9545    0    1 54094.0000 54080.9545  0.02%     -    4s

Cutting planes:
  Gomory: 1
  Implied bound: 44

Explored 5 nodes (5402 simplex iterations) in 4.62 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.409400000000e+04, best bound 5.409400000000e+04, gap 0.0%