Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:48:16 2013

Optimize a model with 704 rows, 41024 columns and 81984 nonzeros
Presolve time: 0.06s
Presolved: 704 rows, 41024 columns, 81984 nonzeros
Variable types: 40960 continuous, 64 integer (64 binary)

Root relaxation: objective 6.021857e+04, 1475 iterations, 0.04 seconds

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

     0     0 60218.5677    0   12          - 60218.5677     -      -    0s
H    0     0                    66972.000000 60218.5677  10.1%     -    0s
H    0     0                    66356.000000 60218.5677  9.25%     -    0s
     0     0 60650.7264    0    5 66356.0000 60650.7264  8.60%     -    0s
H    0     0                    64290.619729 60650.7264  5.66%     -    0s
H    0     0                    63819.000000 60650.7264  4.96%     -    0s
     0     0 60668.1044    0    6 63819.0000 60668.1044  4.94%     -    0s
H    0     0                    62935.000000 60668.1044  3.60%     -    0s
     0     0 60676.1511    0    7 62935.0000 60676.1511  3.59%     -    0s
     0     0 60692.8886    0    5 62935.0000 60692.8886  3.56%     -    0s
     0     0 60704.6018    0    5 62935.0000 60704.6018  3.54%     -    0s
H    0     0                    62851.000000 60704.6018  3.42%     -    0s
     0     0 60716.0547    0    5 62851.0000 60716.0547  3.40%     -    0s
     0     0 60720.2735    0    5 62851.0000 60720.2735  3.39%     -    0s
H    0     0                    62825.000000 60720.2735  3.35%     -    0s
     0     0 60723.1634    0    5 62825.0000 60723.1634  3.35%     -    0s
     0     0 60723.1634    0    5 62825.0000 60723.1634  3.35%     -    0s
H    0     0                    62612.000000 60723.1634  3.02%     -    1s
     0     2 60735.6057    0    5 62612.0000 60735.6057  3.00%     -    1s
H    4     4                    61699.000000 61012.5915  1.11%  64.8    1s
H    5     5                    61415.585366 61012.5915  0.66%  76.6    1s
H   11     8                    61252.000000 61012.5915  0.39%  62.2    1s
*   16    10              14    61235.000000 61012.5915  0.36%  48.2    1s
*   27    13              10    61219.000000 61042.9222  0.29%  43.1    1s
H   45     2                    61179.000000 61149.3696  0.05%  42.9    1s

Cutting planes:
  Implied bound: 190
  Flow cover: 21

Explored 50 nodes (4008 simplex iterations) in 1.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.117900000000e+04, best bound 6.117428985507e+04, gap 0.0077%