Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:42 2013

Optimize a model with 480 rows, 4240 columns and 8820 nonzeros
Presolve removed 80 rows and 60 columns
Presolve time: 0.01s
Presolved: 400 rows, 4180 columns, 8600 nonzeros
Variable types: 4100 continuous, 80 integer (80 binary)

Root relaxation: objective 3.894400e+04, 491 iterations, 0.01 seconds

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

     0     0 38944.0027    0    2          - 38944.0027     -      -    0s
H    0     0                    43398.698282 38944.0027  10.3%     -    0s
     0     2 38947.1351    0    2 43398.6983 38947.1351  10.3%     -    0s
H    3     3                    39298.642118 39204.7362  0.24%   8.0    0s
H    4     1                    39271.822864 39213.2780  0.15%  14.5    0s
H    5     1                    39268.336928 39220.0906  0.12%  14.0    0s
*    6     0               5    39243.200957 39243.2010   0.0%  13.7    0s

Explored 7 nodes (573 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.924320095727e+04, best bound 3.924320095727e+04, gap 0.0%