Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:10:10 2012

Optimize a model with 2799 rows, 1260 columns and 9483 nonzeros
Presolve removed 702 rows and 2 columns
Presolve time: 0.11s
Presolved: 2097 rows, 1258 columns, 7753 nonzeros
Variable types: 0 continuous, 1258 integer (1258 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 3.000000e+00, 1904 iterations, 0.12 seconds

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

     0     0    3.00000    0   38   35.00000    3.00000  91.4%     -    0s
H    0     0                      25.0000000    3.00000  88.0%     -    0s
H    0     0                      15.0000000    3.00000  80.0%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   68    4.00000    3.00000  25.0%     -    0s
     0     0    3.00000    0   73    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0  107    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   90    4.00000    3.00000  25.0%     -    1s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    1s

Cutting planes:
  Gomory: 2
  Zero half: 15

Explored 0 nodes (19637 simplex iterations) in 1.79 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%