Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:35:33 2013

Optimize a model with 36720 rows, 36120 columns and 144120 nonzeros
Presolve removed 60 rows and 0 columns
Presolve time: 0.16s
Presolved: 36660 rows, 36120 columns, 144060 nonzeros
Variable types: 36060 continuous, 60 integer (60 binary)

Root relaxation: objective 4.710603e+04, 3620 iterations, 1.08 seconds

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

     0     0 47106.0323    0   49          - 47106.0323     -      -    1s
H    0     0                    63525.000000 47106.0323  25.8%     -    2s
     0     0 52981.3973    0   12 63525.0000 52981.3973  16.6%     -    4s
H    0     0                    62921.809830 52981.3973  15.8%     -    4s
H    0     0                    57461.000000 52981.3973  7.80%     -    5s
     0     0 53931.9745    0    7 57461.0000 53931.9745  6.14%     -    5s
H    0     0                    57092.000000 53931.9745  5.53%     -    5s
H    0     0                    54117.000000 53931.9745  0.34%     -    5s
     0     0 53960.2462    0    8 54117.0000 53960.2462  0.29%     -    6s
     0     0 53960.9455    0    6 54117.0000 53960.9455  0.29%     -    6s
     0     0 54108.9731    0    4 54117.0000 54108.9731  0.01%     -    6s
     0     0 54115.6667    0    1 54117.0000 54115.6667  0.00%     -    7s

Cutting planes:
  Implied bound: 53

Explored 0 nodes (7235 simplex iterations) in 7.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.411700000000e+04, best bound 5.411566666667e+04, gap 0.0025%