Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:06:43 2012

Optimize a model with 10259 rows, 3660 columns and 34138 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.25s
Presolved: 10317 rows, 3658 columns, 37396 nonzeros
Variable types: 0 continuous, 3658 integer (3658 binary)
Found heuristic solution: objective 60.0000000

Root relaxation: objective 2.000000e+00, 2568 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  120   60.00000    2.00000  96.7%     -    0s
H    0     0                      53.0000000    2.00000  96.2%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  213    5.00000    2.66667  46.7%     -    1s
     0     0    2.67442    0 3151    5.00000    2.67442  46.5%     -    1s
     0     0    2.67442    0 3127    5.00000    2.67442  46.5%     -    3s
     0     0    2.67442    0 3114    5.00000    2.67442  46.5%     -    3s
H    0     0                       4.0000000    2.67442  33.1%     -    3s
     0     0    2.67442    0 3113    4.00000    2.67442  33.1%     -    4s
     0     0    2.67442    0 2828    4.00000    2.67442  33.1%     -    6s
     0     1    3.00000    0 2828    4.00000    3.00000  25.0%     -   10s

Cutting planes:
  Clique: 89
  Zero half: 16

Explored 8 nodes (24918 simplex iterations) in 10.99 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%