Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:34:57 2012

Optimize a model with 4531 rows, 1980 columns and 15354 nonzeros
Presolve removed 838 rows and 2 columns
Presolve time: 0.11s
Presolved: 3737 rows, 1978 columns, 15274 nonzeros
Variable types: 0 continuous, 1978 integer (1978 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 3.000000e+00, 3693 iterations, 0.36 seconds

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

     0     0    3.00000    0   46   44.00000    3.00000  93.2%     -    1s
H    0     0                      43.0000000    3.00000  93.0%     -    1s
H    0     0                      13.0000000    3.00000  76.9%     -    1s
H    0     0                       4.0000000    3.00000  25.0%     -    1s
     0     0    3.00000    0  112    4.00000    3.00000  25.0%     -    1s
     0     0    3.00000    0   93    4.00000    3.00000  25.0%     -    2s
     0     0    3.00000    0  114    4.00000    3.00000  25.0%     -    3s
     0     0    3.00000    0  193    4.00000    3.00000  25.0%     -    4s
     0     0    3.00000    0   60    4.00000    3.00000  25.0%     -    5s
     0     0    3.00000    0   46    4.00000    3.00000  25.0%     -    6s
     0     0    3.00000    0  139    4.00000    3.00000  25.0%     -    7s
     0     0    3.00000    0 1035    4.00000    3.00000  25.0%     -    7s
     0     0    3.00000    0 1035    4.00000    3.00000  25.0%     -    8s
     0     2    3.00000    0   50    4.00000    3.00000  25.0%     -    9s
     2     3    3.00000    1 1035    4.00000    3.00000  25.0%   760   10s

Cutting planes:
  Zero half: 1

Explored 7 nodes (68615 simplex iterations) in 10.59 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%