Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:43:59 2012

Optimize a model with 14463 rows, 4160 columns and 47230 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.44s
Presolved: 14525 rows, 4158 columns, 50874 nonzeros
Variable types: 0 continuous, 4158 integer (4158 binary)
Found heuristic solution: objective 64.0000000

Root relaxation: objective 2.000000e+00, 2962 iterations, 0.10 seconds

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

     0     0    2.00000    0  128   64.00000    2.00000  96.9%     -    0s
H    0     0                      58.0000000    2.00000  96.6%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    2.66667    0  901    5.00000    2.66667  46.7%     -    2s
     0     0    2.66667    0 3755    5.00000    2.66667  46.7%     -    3s
     0     0    2.66667    0  178    5.00000    2.66667  46.7%     -   16s
     0     0    2.67027    0 3345    5.00000    2.67027  46.6%     -   26s
     0     0    2.67027    0 3362    5.00000    2.67027  46.6%     -   28s
H    0     0                       4.0000000    2.67027  33.2%     -   28s
     0     0    2.67027    0 3400    4.00000    2.67027  33.2%     -   35s
     0     0    2.67027    0 3395    4.00000    2.67027  33.2%     -   45s
     0     0    3.00000    0  148    4.00000    3.00000  25.0%     -   48s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -   48s

Cutting planes:
  Gomory: 4
  Zero half: 62

Explored 0 nodes (104211 simplex iterations) in 48.83 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%