Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:44:34 2013

Optimize a model with 693 rows, 39753 columns and 79443 nonzeros
Presolve time: 0.06s
Presolved: 693 rows, 39753 columns, 79443 nonzeros
Variable types: 39690 continuous, 63 integer (63 binary)

Root relaxation: objective 7.692720e+04, 1740 iterations, 0.06 seconds

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

     0     0 76927.1998    0    6          - 76927.1998     -      -    0s
H    0     0                    78518.000000 76927.1998  2.03%     -    0s
     0     0 77010.6000    0    1 78518.0000 77010.6000  1.92%     -    0s
H    0     0                    77586.266667 77010.6000  0.74%     -    0s
H    0     0                    77243.000000 77010.6000  0.30%     -    0s
     0     0 77010.6000    0    6 77243.0000 77010.6000  0.30%     -    0s
H    0     0                    77221.000000 77010.6000  0.27%     -    0s
     0     0 77010.6000    0    1 77221.0000 77010.6000  0.27%     -    0s
     0     0 77010.6000    0    1 77221.0000 77010.6000  0.27%     -    0s
     0     2 77011.2696    0    1 77221.0000 77011.2696  0.27%     -    0s
H    4     3                    77155.789474 77022.5263  0.17%  17.8    0s
*   12     5               9    77133.000000 77027.2784  0.14%  28.8    0s
H   27     6                    77091.000000 77043.8000  0.06%  29.9    1s

Cutting planes:
  Implied bound: 69
  Flow cover: 1

Explored 33 nodes (4011 simplex iterations) in 1.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.709100000000e+04, best bound 7.709100000000e+04, gap 0.0%