Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:24:42 2013

Optimize a model with 33117 rows, 32547 columns and 130017 nonzeros
Presolve removed 2974 rows and 0 columns
Presolve time: 0.19s
Presolved: 30143 rows, 32547 columns, 124069 nonzeros
Variable types: 32490 continuous, 57 integer (57 binary)

Root relaxation: objective 5.980346e+04, 6748 iterations, 0.92 seconds

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

     0     0 59803.4643    0    3          - 59803.4643     -      -    1s
H    0     0                    61080.000000 59803.4643  2.09%     -    1s
H    0     0                    60244.000000 59803.4643  0.73%     -    1s
H    0     0                    60057.000000 59803.4643  0.42%     -    1s
     0     0 59806.1734    0    4 60057.0000 59806.1734  0.42%     -    1s
     0     0 59871.5976    0    2 60057.0000 59871.5976  0.31%     -    1s
H    0     0                    59984.000000 59871.5976  0.19%     -    2s
     0     0 59871.5976    0    2 59984.0000 59871.5976  0.19%     -    2s
     0     0 59871.7214    0    4 59984.0000 59871.7214  0.19%     -    2s
     0     2 59874.3736    0    4 59984.0000 59874.3736  0.18%     -    3s
*    8     3               6    59982.000000 59904.2093  0.13%  42.4    3s
*   13     0               2    59973.000000 59973.0000   0.0%  67.3    3s

Cutting planes:
  Gomory: 2

Explored 14 nodes (9606 simplex iterations) in 3.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.997300000000e+04, best bound 5.997300000000e+04, gap 0.0%