Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:21 2013

Optimize a model with 52 rows, 312 columns and 1906 nonzeros
Presolve removed 22 rows and 80 columns
Presolve time: 0.00s
Presolved: 30 rows, 232 columns, 1662 nonzeros
Variable types: 220 continuous, 12 integer (12 binary)
Found heuristic solution: objective 5818.6660012

Root relaxation: objective 5.784077e+03, 16 iterations, 0.00 seconds

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

     0     0 5784.07688    0    3 5818.66600 5784.07688  0.59%     -    0s
     0     0 5791.07325    0    6 5818.66600 5791.07325  0.47%     -    0s
     0     0 5791.07325    0    3 5818.66600 5791.07325  0.47%     -    0s
     0     0 5809.77076    0    5 5818.66600 5809.77076  0.15%     -    0s
     0     2 5810.99491    0    5 5818.66600 5810.99491  0.13%     -    0s
H    9     8                    5815.5571325 5811.30755  0.07%   0.2    0s
H   10     7                    5812.3255371 5811.30755  0.02%   5.1    0s

Cutting planes:
  Gomory: 3
  Implied bound: 1
  Flow cover: 1

Explored 11 nodes (138 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.812325537147e+03, best bound 5.812205394898e+03, gap 0.0021%