Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:12 2013

Optimize a model with 2280 rows, 6040 columns and 16020 nonzeros
Presolve removed 60 rows and 40 columns
Presolve time: 0.09s
Presolved: 2220 rows, 6000 columns, 13960 nonzeros
Variable types: 5020 continuous, 980 integer (980 binary)

Root relaxation: objective 4.013975e+04, 983 iterations, 0.02 seconds

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

     0     0 40139.7487    0    2          - 40139.7487     -      -    0s
H    0     0                    40236.732897 40139.7487  0.24%     -    0s
     0     0 40144.2942    0    2 40236.7329 40144.2942  0.23%     -    0s
     0     0 40144.2942    0    2 40236.7329 40144.2942  0.23%     -    0s
H    0     0                    40205.095112 40144.2942  0.15%     -    0s
     0     0 40144.2942    0    2 40205.0951 40144.2942  0.15%     -    0s
     0     2 40145.9818    0    2 40205.0951 40145.9818  0.15%     -    0s
*   31    18              10    40197.433596 40167.3290  0.07%   3.5    0s
H   91    17                    40196.970379 40180.4131  0.04%   2.8    0s
H   95    18                    40196.441966 40180.9877  0.04%   2.8    0s
*   98    17               9    40195.162722 40180.9877  0.04%   2.8    0s

Cutting planes:
  Gomory: 2

Explored 120 nodes (1786 simplex iterations) in 0.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.019516272202e+04, best bound 4.019119536949e+04, gap 0.0099%