Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:37 2013

Optimize a model with 13392 rows, 13032 columns and 51912 nonzeros
Presolve removed 36 rows and 0 columns
Presolve time: 0.06s
Presolved: 13356 rows, 13032 columns, 51876 nonzeros
Variable types: 12996 continuous, 36 integer (36 binary)

Root relaxation: objective 3.669667e+04, 2242 iterations, 0.45 seconds

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

     0     0 36696.6674    0   32          - 36696.6674     -      -    0s
H    0     0                    44438.000000 36696.6674  17.4%     -    0s
     0     0 42360.9311    0    5 44438.0000 42360.9311  4.67%     -    1s
H    0     0                    44238.633970 42360.9311  4.24%     -    1s
H    0     0                    43109.000000 42360.9311  1.74%     -    1s
H    0     0                    42471.000000 42360.9311  0.26%     -    1s
     0     0 42435.0246    0    2 42471.0000 42435.0246  0.08%     -    1s
     0     0 42436.2904    0    2 42471.0000 42436.2904  0.08%     -    1s
     0     0 42437.3333    0    1 42471.0000 42437.3333  0.08%     -    1s
     0     2 42440.0000    0    1 42471.0000 42440.0000  0.07%     -    1s
*    1     1               1    42446.000000 42446.0000   0.0%  27.0    1s

Cutting planes:
  Implied bound: 33

Explored 2 nodes (3261 simplex iterations) in 1.58 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.244600000000e+04, best bound 4.244600000000e+04, gap 0.0%