Gurobi 5.0.1 (linux64) logging started Fri Nov 16 14:39:35 2012

Optimize a model with 23324 rows, 5700 columns and 75298 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.71s
Presolved: 23397 rows, 5698 columns, 80301 nonzeros
Variable types: 0 continuous, 5698 integer (5698 binary)
Found heuristic solution: objective 75.0000000

Root relaxation: objective 2.000000e+00, 4278 iterations, 0.19 seconds

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

     0     0    2.00000    0  150   75.00000    2.00000  97.3%     -    1s
H    0     0                      71.0000000    2.00000  97.2%     -    1s
H    0     0                       5.0000000    2.00000  60.0%     -    1s
     0     0    3.00000    0  711    5.00000    3.00000  40.0%     -    9s
     0     0    3.01389    0 4089    5.00000    3.01389  39.7%     -   21s
     0     0    3.01389    0 4090    5.00000    3.01389  39.7%     -   27s
     0     0    3.01389    0 4035    5.00000    3.01389  39.7%     -   40s
     0     0    3.01389    0 4048    5.00000    3.01389  39.7%     -   52s
     0     0    3.01389    0 4052    5.00000    3.01389  39.7%     -   64s
     0     0    3.01389    0 4071    5.00000    3.01389  39.7%     -   77s
     0     0    3.01389    0 4069    5.00000    3.01389  39.7%     -   89s
     0     0    3.01389    0 4069    5.00000    3.01389  39.7%     -  101s
     0     2    4.00000    0 4069    5.00000    4.00000  20.0%     -  121s
    56    13    4.00000    9  122    5.00000    4.00000  20.0%   635  125s
   112    13    4.00000   11  124    5.00000    4.00000  20.0%   370  132s
   575    20    4.00000   11  128    5.00000    4.00000  20.0%   148  135s

Cutting planes:
  Clique: 237
  Zero half: 8

Explored 770 nodes (313607 simplex iterations) in 139.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%