Gurobi 5.0.1 (linux64) logging started Fri Nov 16 11:15:45 2012

Optimize a model with 15260 rows, 4970 columns and 50470 nonzeros
Presolve time: 0.12s
Presolved: 15260 rows, 4970 columns, 50643 nonzeros
Variable types: 0 continuous, 4970 integer (4970 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 2.000000e+00, 5501 iterations, 0.38 seconds

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

     0     0    2.00000    0  140   45.00000    2.00000  95.6%     -    3s
H    0     0                      16.0000000    2.00000  87.5%     -    3s
H    0     0                       5.0000000    2.00000  60.0%     -    3s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -    5s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   12s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   20s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   30s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   39s
     0     0    2.00000    0  140    5.00000    2.00000  60.0%     -   46s
     0     2    2.00000    0  140    5.00000    2.00000  60.0%     -   69s
     1     3    2.66667    1  897    5.00000    2.00000  60.0% 64108   84s
     2     4    2.50000    1  571    5.00000    2.50000  50.0% 45138   94s
     3     5    2.50000    2  145    5.00000    2.50000  50.0% 30326   95s
H   27    13                       4.0000000    2.50000  37.5%  3884   97s
    71    19    2.66667    2  709    4.00000    2.66667  33.3%  1665  100s
   114    18 infeasible    3         4.00000    2.66667  33.3%  1162  105s

Cutting planes:
  Clique: 102
  Zero half: 3

Explored 247 nodes (278699 simplex iterations) in 108.96 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%