Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:17 2013

Optimize a model with 14858 rows, 14478 columns and 57798 nonzeros
Presolve removed 922 rows and 0 columns
Presolve time: 0.08s
Presolved: 13936 rows, 14478 columns, 55954 nonzeros
Variable types: 14440 continuous, 38 integer (38 binary)

Root relaxation: objective 4.273074e+04, 2268 iterations, 0.15 seconds

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

     0     0 42730.7428    0    4          - 42730.7428     -      -    0s
H    0     0                    43275.000000 42730.7428  1.26%     -    0s
     0     0 42735.3374    0    6 43275.0000 42735.3374  1.25%     -    0s
     0     0 42735.3374    0    6 43275.0000 42735.3374  1.25%     -    0s
H    0     0                    43012.000000 42735.3374  0.64%     -    0s
     0     2 42742.1150    0    6 43012.0000 42742.1150  0.63%     -    0s
*    3     3               2    42816.000000 42816.0000   0.0%  70.7    0s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 4 nodes (2509 simplex iterations) in 0.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.281600000000e+04, best bound 4.281600000000e+04, gap 0.0%