Gurobi 5.0.1 (linux64) logging started Fri Nov 16 10:43:13 2012

Optimize a model with 14755 rows, 4692 columns and 48618 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.47s
Presolved: 14821 rows, 4690 columns, 52808 nonzeros
Variable types: 0 continuous, 4690 integer (4690 binary)
Found heuristic solution: objective 68.0000000

Root relaxation: objective 2.000000e+00, 3384 iterations, 0.13 seconds

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

     0     0    2.00000    0  136   68.00000    2.00000  97.1%     -    0s
H    0     0                      63.0000000    2.00000  96.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  374    5.00000    2.66667  46.7%     -    7s
H    0     0                       4.0000000    2.66667  33.3%     -    8s
     0     0    2.68041    0 4105    4.00000    2.68041  33.0%     -   10s
     0     0    3.00000    0  126    4.00000    3.00000  25.0%     -   11s
     0     0    3.00000    0  173    4.00000    3.00000  25.0%     -   11s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -   11s

Cutting planes:
  Gomory: 3
  Zero half: 124

Explored 0 nodes (33849 simplex iterations) in 11.59 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%