Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:34:34 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 4.750784e+04, 4481 iterations, 2.37 seconds

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

     0     0 47507.8374    0   50          - 47507.8374     -      -    2s
H    0     0                    69460.000000 47507.8374  31.6%     -    4s
     0     0 58934.8032    0   10 69460.0000 58934.8032  15.2%     -    7s
H    0     0                    66080.259715 58934.8032  10.8%     -    7s
H    0     0                    61633.000000 58934.8032  4.38%     -    7s
H    0     0                    60501.000000 58934.8032  2.59%     -    7s
     0     0 59738.7160    0    1 60501.0000 59738.7160  1.26%     -    8s
H    0     0                    60031.000000 59738.7160  0.49%     -    8s
     0     2 59780.0000    0    1 60031.0000 59780.0000  0.42%     -    8s
*    5     0               5    59999.000000 59999.0000   0.0%   161    9s

Cutting planes:
  Implied bound: 52

Explored 6 nodes (9089 simplex iterations) in 9.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.999900000000e+04, best bound 5.999900000000e+04, gap 0.0%