Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:08 2013

Optimize a model with 781 rows, 50481 columns and 100891 nonzeros
Presolve time: 0.07s
Presolved: 781 rows, 50481 columns, 100891 nonzeros
Variable types: 50410 continuous, 71 integer (71 binary)

Root relaxation: objective 7.459971e+04, 1825 iterations, 0.06 seconds

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

     0     0 74599.7115    0    4          - 74599.7115     -      -    0s
H    0     0                    75012.000000 74599.7115  0.55%     -    0s
H    0     0                    74798.000000 74599.7115  0.27%     -    0s
     0     0 74678.0163    0    4 74798.0000 74678.0163  0.16%     -    0s
     0     0 74678.0163    0    4 74798.0000 74678.0163  0.16%     -    0s
     0     0 74678.9887    0    4 74798.0000 74678.9887  0.16%     -    0s
     0     0 74699.1140    0    4 74798.0000 74699.1140  0.13%     -    0s
     0     0 74702.1267    0    4 74798.0000 74702.1267  0.13%     -    0s
     0     0 74702.7865    0    3 74798.0000 74702.7865  0.13%     -    0s
     0     0 74703.3076    0    3 74798.0000 74703.3076  0.13%     -    0s
     0     0 74703.6459    0    2 74798.0000 74703.6459  0.13%     -    0s
     0     0 74703.6459    0    2 74798.0000 74703.6459  0.13%     -    0s
     0     0 74735.6286    0    1 74798.0000 74735.6286  0.08%     -    0s
H    0     0                    74744.000000 74735.6286  0.01%     -    1s
     0     2 74735.8197    0    1 74744.0000 74735.8197  0.01%     -    1s

Cutting planes:
  Implied bound: 69
  Flow cover: 2

Explored 3 nodes (3686 simplex iterations) in 1.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.474400000000e+04, best bound 7.474400000000e+04, gap 0.0%