Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:57 2013

Optimize a model with 15639 rows, 15249 columns and 60879 nonzeros
Presolve removed 1908 rows and 0 columns
Presolve time: 0.09s
Presolved: 13731 rows, 15249 columns, 57063 nonzeros
Variable types: 15210 continuous, 39 integer (39 binary)

Root relaxation: objective 4.638972e+04, 2227 iterations, 0.13 seconds

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

     0     0 46389.7207    0    3          - 46389.7207     -      -    0s
H    0     0                    46638.000000 46389.7207  0.53%     -    0s
H    0     0                    46488.000000 46389.7207  0.21%     -    0s
     0     0 46404.5953    0    5 46488.0000 46404.5953  0.18%     -    0s
H    0     0                    46455.000000 46404.5953  0.11%     -    0s
     0     0 46405.2056    0    5 46455.0000 46405.2056  0.11%     -    0s
     0     0 46405.2122    0    4 46455.0000 46405.2122  0.11%     -    0s
     0     0 46405.2122    0    3 46455.0000 46405.2122  0.11%     -    0s
     0     0 46406.3211    0    5 46455.0000 46406.3211  0.10%     -    0s
     0     0 46406.7846    0    3 46455.0000 46406.7846  0.10%     -    0s
     0     2 46417.8909    0    3 46455.0000 46417.8909  0.08%     -    1s
*    4     3               4    46450.000000 46437.8027  0.03%  21.8    1s

Cutting planes:
  Gomory: 3
  Flow cover: 3

Explored 7 nodes (3328 simplex iterations) in 1.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.645000000000e+04, best bound 4.644931034483e+04, gap 0.0015%