Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:40:19 2012

Optimize a model with 5849 rows, 2070 columns and 19393 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.10s
Presolved: 5847 rows, 2068 columns, 19280 nonzeros
Variable types: 0 continuous, 2068 integer (2068 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 2.666667e+00, 4081 iterations, 0.53 seconds

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

     0     0    2.66667    0  117   45.00000    2.66667  94.1%     -    0s
H    0     0                      21.0000000    2.66667  87.3%     -    0s
H    0     0                       9.0000000    2.66667  70.4%     -    0s
H    0     0                       5.0000000    2.66667  46.7%     -    1s
     0     0    2.85091    0 1133    5.00000    2.85091  43.0%     -    2s
     0     0    2.85091    0 1141    5.00000    2.85091  43.0%     -    2s
     0     0    2.85091    0 1067    5.00000    2.85091  43.0%     -    4s
     0     0    2.85091    0 1020    5.00000    2.85091  43.0%     -    7s
     0     0    2.85091    0 1055    5.00000    2.85091  43.0%     -    8s
     0     0    2.85091    0 1014    5.00000    2.85091  43.0%     -   11s
     0     0    2.85091    0 1018    5.00000    2.85091  43.0%     -   13s
     0     0    2.85091    0 1018    5.00000    2.85091  43.0%     -   13s
     0     2    2.86407    0 1018    5.00000    2.86407  42.7%     -   17s
*   18     4              13       4.0000000    3.00000  25.0%   401   17s

Cutting planes:
  Gomory: 1
  Clique: 11
  Zero half: 8

Explored 23 nodes (72344 simplex iterations) in 17.97 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%