Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:36 2013

Optimize a model with 528 rows, 23088 columns and 46128 nonzeros
Presolve time: 0.03s
Presolved: 528 rows, 23088 columns, 46128 nonzeros
Variable types: 23040 continuous, 48 integer (48 binary)

Root relaxation: objective 5.402789e+04, 1051 iterations, 0.02 seconds

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

     0     0 54027.8939    0    6          - 54027.8939     -      -    0s
H    0     0                    55566.000000 54027.8939  2.77%     -    0s
H    0     0                    54449.000000 54027.8939  0.77%     -    0s
     0     0 54154.7128    0    6 54449.0000 54154.7128  0.54%     -    0s
     0     0 54176.7815    0    6 54449.0000 54176.7815  0.50%     -    0s
     0     0 54184.7841    0    4 54449.0000 54184.7841  0.49%     -    0s
     0     0 54184.8003    0    4 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    4 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    6 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    6 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    5 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    5 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    4 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    4 54449.0000 54184.8003  0.49%     -    0s
     0     0 54184.8003    0    4 54449.0000 54184.8003  0.49%     -    0s
     0     2 54189.4583    0    4 54449.0000 54189.4583  0.48%     -    0s
*   10     5               8    54446.000000 54328.2956  0.22%  57.2    0s

Cutting planes:
  Implied bound: 91
  Flow cover: 5

Explored 19 nodes (3504 simplex iterations) in 0.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.444600000000e+04, best bound 5.444600000000e+04, gap 0.0%