Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:49:57 2013

Optimize a model with 560 rows, 9300 columns and 48300 nonzeros
Presolve removed 20 rows and 1140 columns
Presolve time: 0.07s
Presolved: 540 rows, 8160 columns, 44300 nonzeros
Variable types: 8020 continuous, 140 integer (140 binary)

Root relaxation: objective 4.636776e+04, 653 iterations, 0.02 seconds

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

     0     0 46367.7551    0    8          - 46367.7551     -      -    0s
     0     0 46370.4636    0    8          - 46370.4636     -      -    0s
     0     0 46370.4636    0    8          - 46370.4636     -      -    0s
H    0     0                    51251.025964 46370.4636  9.52%     -    0s
     0     2 46370.4636    0    8 51251.0260 46370.4636  9.52%     -    0s
H   27    18                    46702.923428 46640.8576  0.13%  11.1    0s
*   39     8              11    46653.879319 46646.9632  0.01%   8.7    0s
*   62     7              10    46653.827166 46647.9180  0.01%   6.2    0s

Cutting planes:
  Flow cover: 2

Explored 72 nodes (1338 simplex iterations) in 0.81 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665382716636e+04, best bound 4.665026191604e+04, gap 0.0076%