Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:54 2012

Optimize a model with 329 rows, 344 columns and 1164 nonzeros
Presolve removed 0 rows and 31 columns
Presolve time: 0.00s
Presolved: 329 rows, 313 columns, 1133 nonzeros
Variable types: 0 continuous, 313 integer (312 binary)
Found heuristic solution: objective 47.0000000

Root relaxation: objective 0.000000e+00, 197 iterations, 0.00 seconds

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

     0     0    0.00000    0  124   47.00000    0.00000   100%     -    0s
H    0     0                      42.0000000    0.00000   100%     -    0s
H    0     0                      33.0000000    0.00000   100%     -    0s
H    0     0                      31.0000000    0.00000   100%     -    0s
     0     0    0.13529    0  126   31.00000    0.13529   100%     -    0s
H    0     0                      30.0000000    0.13529   100%     -    0s
     0     0    0.75297    0  128   30.00000    0.75297  97.5%     -    0s
H    0     0                      28.0000000    0.75297  97.3%     -    0s
     0     0    0.75297    0  128   28.00000    0.75297  97.3%     -    0s
     0     2    0.75450    0  128   28.00000    0.75450  97.3%     -    0s
H   27    23                       8.0000000    1.00000  87.5%  31.7    0s

Cutting planes:
  Gomory: 4
  Zero half: 1

Explored 171 nodes (6154 simplex iterations) in 0.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%