Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:13:27 2012

Optimize a model with 2832 rows, 2352 columns and 10656 nonzeros
Presolve removed 4 rows and 192 columns
Presolve time: 0.06s
Presolved: 2828 rows, 2160 columns, 10464 nonzeros
Variable types: 0 continuous, 2160 integer (2160 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 2.000000e+00, 2139 iterations, 0.08 seconds

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

     0     0    2.00000    0   88   27.00000    2.00000  92.6%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
H    0     0                       3.0000000    2.00000  33.3%     -    0s
     0     0    2.00000    0  224    3.00000    2.00000  33.3%     -    0s
     0     0    2.00000    0  134    3.00000    2.00000  33.3%     -    1s
     0     0    2.00000    0  134    3.00000    2.00000  33.3%     -    1s
     0     0    2.00000    0  134    3.00000    2.00000  33.3%     -    2s
     0     0    2.00000    0  135    3.00000    2.00000  33.3%     -    2s
     0     0    2.00000    0  134    3.00000    2.00000  33.3%     -    3s
     0     0    2.00000    0  134    3.00000    2.00000  33.3%     -    3s
     0     0    2.00000    0  134    3.00000    2.00000  33.3%     -    4s
     0     2    2.00000    0  134    3.00000    2.00000  33.3%     -    4s
     4     4    2.00000    1   88    3.00000    2.00000  33.3%   568    5s
    10     8    2.00000    1   88    3.00000    2.00000  33.3%   227   11s

Cutting planes:
  Gomory: 4
  Zero half: 2

Explored 15 nodes (91720 simplex iterations) in 12.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%