Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:46 2013

Optimize a model with 260 rows, 1230 columns and 2750 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.00s
Presolved: 240 rows, 1210 columns, 2680 nonzeros
Variable types: 1120 continuous, 90 integer (90 binary)

Root relaxation: objective 1.937272e+04, 94 iterations, 0.00 seconds

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

     0     0 19372.7157    0    2          - 19372.7157     -      -    0s
     0     0 19384.1479    0    2          - 19384.1479     -      -    0s
     0     0 19384.5238    0    2          - 19384.5238     -      -    0s
     0     0 19384.5238    0    2          - 19384.5238     -      -    0s
H    0     0                    19595.690215 19384.5238  1.08%     -    0s
     0     2 19405.9319    0    2 19595.6902 19405.9319  0.97%     -    0s
*    7     6               4    19517.941698 19467.6606  0.26%  11.7    0s
*    9     2               4    19512.982017 19467.6606  0.23%   9.7    0s

Cutting planes:
  Gomory: 1
  Flow cover: 2

Explored 15 nodes (228 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.951298201724e+04, best bound 1.951298201724e+04, gap 0.0%