Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:26:59 2013

Optimize a model with 34278 rows, 33698 columns and 134618 nonzeros
Presolve removed 3145 rows and 0 columns
Presolve time: 0.20s
Presolved: 31133 rows, 33698 columns, 128328 nonzeros
Variable types: 33640 continuous, 58 integer (58 binary)

Root relaxation: objective 7.287734e+04, 7301 iterations, 0.95 seconds

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

     0     0 72877.3383    0    6          - 72877.3383     -      -    1s
H    0     0                    73972.000000 72877.3383  1.48%     -    1s
H    0     0                    72979.000000 72877.3383  0.14%     -    1s
     0     0 72883.6453    0    7 72979.0000 72883.6453  0.13%     -    1s
     0     0 72883.6783    0    7 72979.0000 72883.6783  0.13%     -    1s
     0     0 72883.6962    0    7 72979.0000 72883.6962  0.13%     -    1s
     0     0 72897.3516    0    5 72979.0000 72897.3516  0.11%     -    2s
     0     0 72898.7112    0    3 72979.0000 72898.7112  0.11%     -    2s
     0     0 72898.7112    0    3 72979.0000 72898.7112  0.11%     -    3s
     0     0 72899.4263    0    6 72979.0000 72899.4263  0.11%     -    3s
     0     0 72920.3320    0    3 72979.0000 72920.3320  0.08%     -    3s
     0     2 72925.3736    0    3 72979.0000 72925.3736  0.07%     -    4s

Cutting planes:
  Gomory: 1

Explored 5 nodes (10750 simplex iterations) in 4.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.297900000000e+04, best bound 7.297900000000e+04, gap 0.0%