Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:40:25 2012

Optimize a model with 12927 rows, 4160 columns and 42622 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.39s
Presolved: 12989 rows, 4158 columns, 46314 nonzeros
Variable types: 0 continuous, 4158 integer (4158 binary)
Found heuristic solution: objective 63.0000000

Root relaxation: objective 2.000000e+00, 2876 iterations, 0.11 seconds

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

     0     0    2.00000    0  128   63.00000    2.00000  96.8%     -    0s
H    0     0                      54.0000000    2.00000  96.3%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    2.66667    0  187    4.00000    2.66667  33.3%     -    2s
     0     0    2.67027    0 3858    4.00000    2.67027  33.2%     -    3s
     0     0    3.00000    0  229    4.00000    3.00000  25.0%     -    4s
     0     0    3.00000    0   88    4.00000    3.00000  25.0%     -    5s
     0     0    3.00000    0  374    4.00000    3.00000  25.0%     -    5s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    5s

Cutting planes:
  Gomory: 1
  Zero half: 81

Explored 0 nodes (25558 simplex iterations) in 5.46 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%