Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:20:05 2012

Optimize a model with 9017 rows, 2970 columns and 29752 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.19s
Presolved: 9069 rows, 2968 columns, 32334 nonzeros
Variable types: 0 continuous, 2968 integer (2968 binary)
Found heuristic solution: objective 54.0000000

Root relaxation: objective 2.000000e+00, 2104 iterations, 0.05 seconds

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

     0     0    2.00000    0  108   54.00000    2.00000  96.3%     -    0s
H    0     0                      46.0000000    2.00000  95.7%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0 1649    5.00000    3.00000  40.0%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    2s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    2s

Cutting planes:
  Clique: 50
  Zero half: 55

Explored 0 nodes (11702 simplex iterations) in 2.60 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%