Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:01 2013

Optimize a model with 539 rows, 24059 columns and 48069 nonzeros
Presolve time: 0.03s
Presolved: 539 rows, 24059 columns, 48069 nonzeros
Variable types: 24010 continuous, 49 integer (49 binary)

Root relaxation: objective 5.406688e+04, 1128 iterations, 0.02 seconds

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

     0     0 54066.8782    0   10          - 54066.8782     -      -    0s
H    0     0                    55218.000000 54066.8782  2.08%     -    0s
H    0     0                    54507.000000 54066.8782  0.81%     -    0s
     0     0 54233.5035    0    5 54507.0000 54233.5035  0.50%     -    0s
     0     0 54250.2504    0    4 54507.0000 54250.2504  0.47%     -    0s
     0     0 54256.8569    0    5 54507.0000 54256.8569  0.46%     -    0s
     0     0 54260.8697    0    4 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0    4 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0   10 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0    5 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0    4 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0    5 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0    4 54507.0000 54260.8697  0.45%     -    0s
     0     0 54260.8697    0    4 54507.0000 54260.8697  0.45%     -    0s
H    0     0                    54298.000000 54260.8697  0.07%     -    0s
     0     2 54266.9452    0    4 54298.0000 54266.9452  0.06%     -    0s

Cutting planes:
  Implied bound: 79
  Flow cover: 7

Explored 2 nodes (2456 simplex iterations) in 0.78 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.429800000000e+04, best bound 5.429477358491e+04, gap 0.0059%