Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:39:15 2013

Optimize a model with 880 rows, 64080 columns and 128080 nonzeros
Presolve time: 0.10s
Presolved: 880 rows, 64080 columns, 128080 nonzeros
Variable types: 64000 continuous, 80 integer (80 binary)

Root relaxation: objective 7.477550e+04, 2031 iterations, 0.08 seconds

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

     0     0 74775.4975    0    7          - 74775.4975     -      -    0s
H    0     0                    79605.000000 74775.4975  6.07%     -    0s
H    0     0                    75740.000000 74775.4975  1.27%     -    0s
     0     0 75141.6369    0    5 75740.0000 75141.6369  0.79%     -    0s
     0     0 75141.6369    0    7 75740.0000 75141.6369  0.79%     -    0s
     0     0 75141.6369    0    5 75740.0000 75141.6369  0.79%     -    0s
     0     0 75146.1024    0    4 75740.0000 75146.1024  0.78%     -    1s
     0     0 75151.8938    0    2 75740.0000 75151.8938  0.78%     -    1s
     0     2 75152.4444    0    2 75740.0000 75152.4444  0.78%     -    1s
H    2     2                    75712.348837 75153.1628  0.74%   6.5    1s
*   12     7              12    75443.000000 75155.7550  0.38%  23.2    1s
*   15     5              11    75441.000000 75155.7550  0.38%  24.7    1s
H   20     6                    75420.000000 75183.6118  0.31%  31.1    1s
*   21     7               7    75381.000000 75183.6118  0.26%  30.4    1s
H   25     5                    75369.000000 75249.4772  0.16%  34.4    1s
*   26     6               5    75343.000000 75249.4772  0.12%  36.7    1s

Cutting planes:
  Implied bound: 95
  Flow cover: 5

Explored 36 nodes (5747 simplex iterations) in 2.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.534300000000e+04, best bound 7.534300000000e+04, gap 0.0%