Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:52:36 2013

Optimize a model with 715 rows, 42315 columns and 84565 nonzeros
Presolve time: 0.06s
Presolved: 715 rows, 42315 columns, 84565 nonzeros
Variable types: 42250 continuous, 65 integer (65 binary)

Root relaxation: objective 6.098127e+04, 1290 iterations, 0.04 seconds

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

     0     0 60981.2670    0    8          - 60981.2670     -      -    0s
H    0     0                    64103.000000 60981.2670  4.87%     -    0s
     0     0 61740.2403    0    8 64103.0000 61740.2403  3.69%     -    0s
H    0     0                    62059.000000 61740.2403  0.51%     -    0s
     0     0 61784.1341    0   10 62059.0000 61784.1341  0.44%     -    0s
     0     0 61784.1341    0    8 62059.0000 61784.1341  0.44%     -    0s
     0     0 61784.1341    0    8 62059.0000 61784.1341  0.44%     -    0s
     0     0 61784.1341    0    9 62059.0000 61784.1341  0.44%     -    0s
     0     0 61794.3811    0    3 62059.0000 61794.3811  0.43%     -    0s
     0     0 61794.3811    0    3 62059.0000 61794.3811  0.43%     -    0s
     0     0 61810.2011    0    4 62059.0000 61810.2011  0.40%     -    0s
     0     0 61812.0373    0    3 62059.0000 61812.0373  0.40%     -    0s
H    0     0                    62003.000000 61812.0373  0.31%     -    1s
     0     2 61816.6919    0    3 62003.0000 61816.6919  0.30%     -    1s
*   22     6              11    61976.000000 61871.4390  0.17%  28.2    1s

Cutting planes:
  Implied bound: 147
  Flow cover: 3

Explored 29 nodes (4076 simplex iterations) in 1.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.197600000000e+04, best bound 6.197600000000e+04, gap 0.0%