Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:11:28 2012

Optimize a model with 2922 rows, 1406 columns and 9988 nonzeros
Presolve removed 668 rows and 2 columns
Presolve time: 0.10s
Presolved: 2254 rows, 1404 columns, 8349 nonzeros
Variable types: 0 continuous, 1404 integer (1404 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 3.000000e+00, 1955 iterations, 0.12 seconds

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

     0     0    3.00000    0   63   37.00000    3.00000  91.9%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   76    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   78    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   68    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   55    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   48    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   78    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   77    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0   69    4.00000    3.00000  25.0%     -    3s
     0     0    3.00000    0   76    4.00000    3.00000  25.0%     -    3s
     0     0    3.00000    0   76    4.00000    3.00000  25.0%     -    3s
     0     2    3.00000    0   76    4.00000    3.00000  25.0%     -    4s
     4     4    3.00000    1   93    4.00000    3.00000  25.0%   264    5s
    14    13    3.00000   13  142    4.00000    3.00000  25.0%  2513   10s

Cutting planes:
  Gomory: 4
  Zero half: 6

Explored 37 nodes (77423 simplex iterations) in 13.90 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%