Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:27:52 2012

Optimize a model with 475 rows, 454 columns and 1639 nonzeros
Presolve removed 0 rows and 30 columns
Presolve time: 0.00s
Presolved: 475 rows, 424 columns, 1609 nonzeros
Variable types: 0 continuous, 424 integer (423 binary)
Found heuristic solution: objective 85.0000000

Root relaxation: objective 0.000000e+00, 261 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  181   85.00000    0.00000   100%     -    0s
H    0     0                      77.0000000    0.00000   100%     -    0s
H    0     0                      67.0000000    0.00000   100%     -    0s
H    0     0                      53.0000000    0.00000   100%     -    0s
     0     0    0.31632    0  183   53.00000    0.31632  99.4%     -    0s
     0     0    0.79817    0  188   53.00000    0.79817  98.5%     -    0s
H    0     0                      50.0000000    0.79817  98.4%     -    0s
     0     0    0.79817    0  188   50.00000    0.79817  98.4%     -    0s
H    0     0                      49.0000000    0.79817  98.4%     -    0s
H    0     0                      43.0000000    0.79817  98.1%     -    0s
     0     2    0.80165    0  188   43.00000    0.80165  98.1%     -    0s
H   27    27                      37.0000000    1.00000  97.3%  42.6    0s
*   47    37              26      15.0000000    1.00000  93.3%  34.4    0s

Cutting planes:
  Gomory: 4

Explored 859 nodes (23986 simplex iterations) in 1.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%