Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:16 2013

Optimize a model with 13356 rows, 12996 columns and 51876 nonzeros
Presolve removed 182 rows and 0 columns
Presolve time: 0.07s
Presolved: 13174 rows, 12996 columns, 51512 nonzeros
Variable types: 12960 continuous, 36 integer (36 binary)

Root relaxation: objective 4.243502e+04, 2769 iterations, 0.20 seconds

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

     0     0 42435.0246    0    2          - 42435.0246     -      -    0s
H    0     0                    42446.000000 42435.0246  0.03%     -    0s
     0     0 42443.4205    0    3 42446.0000 42443.4205  0.01%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 0 nodes (2806 simplex iterations) in 0.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.244600000000e+04, best bound 4.244342047244e+04, gap 0.0061%