Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:05:42 2012

Optimize a model with 10079 rows, 3660 columns and 33598 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.25s
Presolved: 10137 rows, 3658 columns, 36862 nonzeros
Variable types: 0 continuous, 3658 integer (3658 binary)
Found heuristic solution: objective 60.0000000

Root relaxation: objective 2.000000e+00, 2814 iterations, 0.09 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                      48.0000000    2.00000  95.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0  936    5.00000    3.00000  40.0%     -    1s
     0     0    3.00000    0 2169    5.00000    3.00000  40.0%     -    2s
     0     0    3.00000    0   99    5.00000    3.00000  40.0%     -    9s
H    0     0                       4.0000000    3.00000  25.0%     -   10s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -   11s

Cutting planes:
  Clique: 23
  Zero half: 65
  Mod-K: 1

Explored 0 nodes (47231 simplex iterations) in 11.01 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%