Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:55:27 2013

Optimize a model with 43030 rows, 42380 columns and 169130 nonzeros
Presolve removed 65 rows and 0 columns
Presolve time: 0.19s
Presolved: 42965 rows, 42380 columns, 169065 nonzeros
Variable types: 42315 continuous, 65 integer (65 binary)

Root relaxation: objective 5.986782e+04, 5770 iterations, 3.15 seconds

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

     0     0 59867.8183    0   51          - 59867.8183     -      -    3s
H    0     0                    87454.000000 59867.8183  31.5%     -    5s
     0     0 71978.0691    0   12 87454.0000 71978.0691  17.7%     -    8s
H    0     0                    81405.000000 71978.0691  11.6%     -    9s
     0     0 74275.8571    0    5 81405.0000 74275.8571  8.76%     -   10s
H    0     0                    78121.813574 74275.8571  4.92%     -   10s
H    0     0                    77249.000000 74275.8571  3.85%     -   10s
     0     0 74566.9003    0    4 77249.0000 74566.9003  3.47%     -   10s
H    0     0                    77060.000000 74566.9003  3.24%     -   10s
H    0     0                    74701.000000 74566.9003  0.18%     -   11s
     0     2 74580.2989    0    2 74701.0000 74580.2989  0.16%     -   11s
*    5     4               5    74673.000000 74634.3671  0.05%  91.6   11s

Cutting planes:
  Implied bound: 62

Explored 8 nodes (12340 simplex iterations) in 12.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.467300000000e+04, best bound 7.467300000000e+04, gap 0.0%