Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:57 2013

Optimize a model with 520 rows, 5180 columns and 16440 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.02s
Presolved: 500 rows, 5160 columns, 15420 nonzeros
Variable types: 5040 continuous, 120 integer (120 binary)

Root relaxation: objective 4.642213e+04, 568 iterations, 0.01 seconds

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

     0     0 46422.1265    0    9          - 46422.1265     -      -    0s
     0     0 46425.8934    0    6          - 46425.8934     -      -    0s
     0     0 46426.4860    0    6          - 46426.4860     -      -    0s
     0     0 46426.4860    0    6          - 46426.4860     -      -    0s
     0     0 46426.4860    0    6          - 46426.4860     -      -    0s
     0     0 46426.4860    0    6          - 46426.4860     -      -    0s
     0     0 46426.4860    0    6          - 46426.4860     -      -    0s
H    0     0                    52340.024990 46426.4860  11.3%     -    0s
     0     2 46437.2111    0    6 52340.0250 46437.2111  11.3%     -    0s
*   17    14              15    46846.537332 46459.2040  0.83%  15.9    0s
*   26     8               8    46743.774076 46510.3656  0.50%  16.5    0s

Cutting planes:
  Flow cover: 7

Explored 45 nodes (1607 simplex iterations) in 0.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674377407618e+04, best bound 4.674056111046e+04, gap 0.0069%