Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:15:58 2012

Optimize a model with 497 rows, 459 columns and 1699 nonzeros
Presolve removed 0 rows and 16 columns
Presolve time: 0.00s
Presolved: 497 rows, 443 columns, 1683 nonzeros
Variable types: 0 continuous, 443 integer (442 binary)
Found heuristic solution: objective 86.0000000

Root relaxation: objective 0.000000e+00, 230 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   86.00000    0.00000   100%     -    0s
H    0     0                      70.0000000    0.00000   100%     -    0s
H    0     0                      67.0000000    0.00000   100%     -    0s
     0     0    0.42288    0  182   67.00000    0.42288  99.4%     -    0s
H    0     0                      57.0000000    0.42288  99.3%     -    0s
     0     0    1.00000    0  185   57.00000    1.00000  98.2%     -    0s
H    0     0                      47.0000000    1.00000  97.9%     -    0s
     0     0    1.00000    0  184   47.00000    1.00000  97.9%     -    0s
H    0     0                      44.0000000    1.00000  97.7%     -    0s
     0     0    1.00000    0  188   44.00000    1.00000  97.7%     -    0s
     0     0    1.00000    0  183   44.00000    1.00000  97.7%     -    0s
H    0     0                      39.0000000    1.00000  97.4%     -    0s
     0     2    1.00000    0  183   39.00000    1.00000  97.4%     -    0s
H   27    27                      37.0000000    1.00000  97.3%  65.3    0s
*   37    31              20      17.0000000    1.00000  94.1%  56.4    0s

Cutting planes:
  Gomory: 3

Explored 1152 nodes (38443 simplex iterations) in 1.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%