Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:03:33 2013

Optimize a model with 495 rows, 20295 columns and 40545 nonzeros
Presolve time: 0.03s
Presolved: 495 rows, 20295 columns, 40545 nonzeros
Variable types: 20250 continuous, 45 integer (45 binary)

Root relaxation: objective 4.679997e+04, 790 iterations, 0.01 seconds

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

     0     0 46799.9678    0    9          - 46799.9678     -      -    0s
H    0     0                    49400.000000 46799.9678  5.26%     -    0s
H    0     0                    47375.000000 46799.9678  1.21%     -    0s
     0     0 47147.2703    0    9 47375.0000 47147.2703  0.48%     -    0s
     0     0 47184.0023    0    7 47375.0000 47184.0023  0.40%     -    0s
     0     0 47190.2106    0    4 47375.0000 47190.2106  0.39%     -    0s
     0     0 47191.9622    0    6 47375.0000 47191.9622  0.39%     -    0s
     0     0 47192.4827    0    7 47375.0000 47192.4827  0.39%     -    0s
     0     0 47192.5351    0    6 47375.0000 47192.5351  0.39%     -    0s
     0     2 47198.2814    0    6 47375.0000 47198.2814  0.37%     -    0s

Cutting planes:
  Implied bound: 119
  Flow cover: 2

Explored 13 nodes (1445 simplex iterations) in 0.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.737500000000e+04, best bound 4.737500000000e+04, gap 0.0%