Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:04:10 2013

Optimize a model with 20790 rows, 20340 columns and 81090 nonzeros
Presolve removed 45 rows and 0 columns
Presolve time: 0.09s
Presolved: 20745 rows, 20340 columns, 81045 nonzeros
Variable types: 20295 continuous, 45 integer (45 binary)

Root relaxation: objective 4.016140e+04, 3439 iterations, 1.02 seconds

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

     0     0 40161.4030    0   35          - 40161.4030     -      -    1s
H    0     0                    50598.000000 40161.4030  20.6%     -    1s
     0     0 46821.1294    0    7 50598.0000 46821.1294  7.46%     -    2s
H    0     0                    50244.000000 46821.1294  6.81%     -    2s
H    0     0                    47869.000000 46821.1294  2.19%     -    2s
     0     0 47228.7586    0    1 47869.0000 47228.7586  1.34%     -    3s
H    0     0                    47478.505747 47228.7586  0.53%     -    3s
H    0     0                    47442.000000 47228.7586  0.45%     -    3s
     0     0 47228.7586    0    1 47442.0000 47228.7586  0.45%     -    3s
     0     2 47230.5714    0    1 47442.0000 47230.5714  0.45%     -    3s
*    1     1               1    47266.000000 47266.0000   0.0%   100    3s

Cutting planes:
  Gomory: 1
  Implied bound: 38

Explored 2 nodes (5745 simplex iterations) in 3.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.726600000000e+04, best bound 4.726600000000e+04, gap 0.0%