Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:02:35 2013

Optimize a model with 737 rows, 44957 columns and 89847 nonzeros
Presolve time: 0.06s
Presolved: 737 rows, 44957 columns, 89847 nonzeros
Variable types: 44890 continuous, 67 integer (67 binary)

Root relaxation: objective 7.401331e+04, 1722 iterations, 0.05 seconds

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

     0     0 74013.3088    0    6          - 74013.3088     -      -    0s
H    0     0                    77771.000000 74013.3088  4.83%     -    0s
H    0     0                    74711.000000 74013.3088  0.93%     -    0s
     0     0 74277.0217    0    6 74711.0000 74277.0217  0.58%     -    0s
     0     0 74277.0217    0    6 74711.0000 74277.0217  0.58%     -    0s
     0     0 74277.0217    0    6 74711.0000 74277.0217  0.58%     -    0s
     0     0 74333.1803    0    7 74711.0000 74333.1803  0.51%     -    0s
     0     0 74345.5286    0    5 74711.0000 74345.5286  0.49%     -    0s
     0     0 74351.1972    0    5 74711.0000 74351.1972  0.48%     -    0s
     0     0 74352.8083    0    5 74711.0000 74352.8083  0.48%     -    0s
     0     0 74420.9598    0    5 74711.0000 74420.9598  0.39%     -    1s
     0     0 74429.2098    0    4 74711.0000 74429.2098  0.38%     -    1s
     0     2 74438.1124    0    4 74711.0000 74438.1124  0.37%     -    1s

Cutting planes:
  Implied bound: 96
  Flow cover: 2

Explored 10 nodes (4344 simplex iterations) in 1.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.471100000000e+04, best bound 7.470413589290e+04, gap 0.0092%