Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:39:42 2013

Optimize a model with 39122 rows, 38502 columns and 153822 nonzeros
Presolve removed 1470 rows and 0 columns
Presolve time: 0.23s
Presolved: 37652 rows, 38502 columns, 150882 nonzeros
Variable types: 38440 continuous, 62 integer (62 binary)

Root relaxation: objective 6.014030e+04, 6222 iterations, 0.87 seconds

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

     0     0 60140.3016    0    5          - 60140.3016     -      -    1s
H    0     0                    61971.000000 60140.3016  2.95%     -    1s
H    0     0                    61304.000000 60140.3016  1.90%     -    1s
H    0     0                    60251.000000 60140.3016  0.18%     -    1s
     0     0 60142.9425    0    6 60251.0000 60142.9425  0.18%     -    1s
     0     0 60142.9425    0    5 60251.0000 60142.9425  0.18%     -    2s
     0     0 60145.3161    0    6 60251.0000 60145.3161  0.18%     -    2s
     0     0 60145.3161    0    6 60251.0000 60145.3161  0.18%     -    2s
     0     0 60206.5826    0    2 60251.0000 60206.5826  0.07%     -    3s
     0     2 60209.0558    0    2 60251.0000 60209.0558  0.07%     -    3s
*    2     2               2    60231.000000 60231.0000   0.0%  32.5    3s

Cutting planes:
  Gomory: 2

Explored 3 nodes (8495 simplex iterations) in 3.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.023100000000e+04, best bound 6.023100000000e+04, gap 0.0%