Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:59:06 2013

Optimize a model with 57150 rows, 56400 columns and 225150 nonzeros
Presolve removed 75 rows and 0 columns
Presolve time: 0.26s
Presolved: 57075 rows, 56400 columns, 225075 nonzeros
Variable types: 56325 continuous, 75 integer (75 binary)

Root relaxation: objective 6.055680e+04, 6487 iterations, 4.00 seconds

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

     0     0 60556.7995    0   53          - 60556.7995     -      -    4s
H    0     0                    94661.000000 60556.7995  36.0%     -    6s
H    0     0                    77029.000000 60556.7995  21.4%     -   22s
     0     0 72580.1590    0   21 77029.0000 72580.1590  5.78%     -   29s
     0     0 74448.6685    0    7 77029.0000 74448.6685  3.35%     -   31s
H    0     0                    75616.000000 74448.6685  1.54%     -   31s
     0     0 74613.6883    0    1 75616.0000 74613.6883  1.33%     -   32s
H    0     0                    75185.675325 74613.6883  0.76%     -   32s
H    0     0                    74889.000000 74613.6883  0.37%     -   32s
H    0     0                    74685.000000 74613.6883  0.10%     -   32s
     0     2 74614.0000    0    1 74685.0000 74614.0000  0.10%     -   33s

Cutting planes:
  Implied bound: 69

Explored 3 nodes (14487 simplex iterations) in 33.96 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.468500000000e+04, best bound 7.468300000000e+04, gap 0.0027%