Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:02:35 2013

Optimize a model with 231 rows, 121 columns and 726 nonzeros
Presolve removed 70 rows and 62 columns
Presolve time: 0.00s
Presolved: 161 rows, 59 columns, 523 nonzeros
Variable types: 5 continuous, 54 integer (54 binary)
Found heuristic solution: objective 2431.0000000
Found heuristic solution: objective 2253.0000000

Root relaxation: objective 1.850080e+03, 13 iterations, 0.00 seconds

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

     0     0 1850.08000    0    6 2253.00000 1850.08000  17.9%     -    0s
H    0     0                    1887.0000000 1850.08000  1.96%     -    0s
     0     0 1850.09741    0   13 1887.00000 1850.09741  1.96%     -    0s
H    0     0                    1865.0000000 1850.09741  0.80%     -    0s
H    0     0                    1864.0000000 1850.09741  0.75%     -    0s
     0     0 1851.59922    0   12 1864.00000 1851.59922  0.67%     -    0s
     0     0 1851.59922    0    6 1864.00000 1851.59922  0.67%     -    0s
     0     0 1853.64837    0    6 1864.00000 1853.64837  0.56%     -    0s
H    0     0                    1863.0000000 1853.64837  0.50%     -    0s
     0     0 1856.20982    0    9 1863.00000 1856.20982  0.36%     -    0s
     0     0 1856.42857    0    8 1863.00000 1856.42857  0.35%     -    0s
     0     0 1856.47619    0    9 1863.00000 1856.47619  0.35%     -    0s
     0     0 1857.66667    0    5 1863.00000 1857.66667  0.29%     -    0s
     0     2 1860.00000    0    5 1863.00000 1860.00000  0.16%     -    0s

Cutting planes:
  Implied bound: 3
  MIR: 5
  Zero half: 1

Explored 5 nodes (139 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.863000000000e+03, best bound 1.863000000000e+03, gap 0.0%