Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:15:05 2012

Optimize a model with 533 rows, 493 columns and 1823 nonzeros
Presolve removed 0 rows and 22 columns
Presolve time: 0.00s
Presolved: 533 rows, 471 columns, 1801 nonzeros
Variable types: 0 continuous, 471 integer (470 binary)
Found heuristic solution: objective 100.0000000

Root relaxation: objective 0.000000e+00, 284 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  196  100.00000    0.00000   100%     -    0s
H    0     0                      75.0000000    0.00000   100%     -    0s
H    0     0                      55.0000000    0.00000   100%     -    0s
     0     0    0.26627    0  198   55.00000    0.26627   100%     -    0s
H    0     0                      46.0000000    0.26627  99.4%     -    0s
     0     0    0.74802    0  203   46.00000    0.74802  98.4%     -    0s
H    0     0                      37.0000000    0.74802  98.0%     -    0s
     0     0    0.74806    0  202   37.00000    0.74806  98.0%     -    0s
     0     0    0.74806    0  202   37.00000    0.74806  98.0%     -    0s
     0     2    0.74873    0  202   37.00000    0.74873  98.0%     -    0s
*   68    54              42      22.0000000    1.00000  95.5%  37.7    0s
H  220   138                      20.0000000    1.00000  95.0%  32.5    0s
H 1994   218                      19.0000000   14.62500  23.0%  24.0    4s
  2704    32   17.78659   21  199   19.00000   17.14286  9.77%  22.3    5s

Cutting planes:
  Gomory: 9
  Zero half: 2

Explored 2741 nodes (62199 simplex iterations) in 5.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%