Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:44 2013

Optimize a model with 240 rows, 1320 columns and 2810 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.01s
Presolved: 220 rows, 1290 columns, 2580 nonzeros
Variable types: 1200 continuous, 90 integer (90 binary)

Root relaxation: objective 1.836170e+04, 118 iterations, 0.00 seconds

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

     0     0 18361.7044    0    1          - 18361.7044     -      -    0s
     0     0 18370.3474    0    3          - 18370.3474     -      -    0s
     0     0 18370.5925    0    3          - 18370.5925     -      -    0s
     0     0 18371.0619    0    3          - 18371.0619     -      -    0s
     0     0 18371.2617    0    3          - 18371.2617     -      -    0s
     0     0 18371.2617    0    3          - 18371.2617     -      -    0s
H    0     0                    18422.415846 18371.2617  0.28%     -    0s
     0     2 18375.3308    0    2 18422.4158 18375.3308  0.26%     -    0s
*    4     1               3    18420.379720 18417.6393  0.01%   5.8    0s
*    5     0               2    18417.639282 18417.6393   0.0%   6.2    0s

Cutting planes:
  Gomory: 1
  Flow cover: 4

Explored 6 nodes (195 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.841763928198e+04, best bound 1.841763928198e+04, gap 0.0%