Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:35:34 2012

Optimize a model with 289 rows, 222 columns and 942 nonzeros
Presolve removed 0 rows and 3 columns
Presolve time: 0.00s
Presolved: 289 rows, 219 columns, 939 nonzeros
Variable types: 0 continuous, 219 integer (218 binary)
Found heuristic solution: objective 56.0000000

Root relaxation: objective 0.000000e+00, 111 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   74   56.00000    0.00000   100%     -    0s
H    0     0                      51.0000000    0.00000   100%     -    0s
H    0     0                      45.0000000    0.00000   100%     -    0s
     0     0    0.55180    0   75   45.00000    0.55180  98.8%     -    0s
     0     0    1.12631    0   77   45.00000    1.12631  97.5%     -    0s
H    0     0                      39.0000000    1.12631  97.1%     -    0s
     0     0    1.36597    0   78   39.00000    1.36597  96.5%     -    0s
H    0     0                      37.0000000    1.36597  96.3%     -    0s
     0     0    1.37577    0   78   37.00000    1.37577  96.3%     -    0s
     0     2    1.37902    0   78   37.00000    1.37902  96.3%     -    0s
*   37    34              23      32.0000000    3.69572  88.5%  30.8    0s
*   63    45              17      28.0000000    3.74010  86.6%  33.0    0s
*   66    42              17      27.0000000    3.74010  86.1%  31.6    0s
*  142    81              23      24.0000000    5.97674  75.1%  33.3    0s
* 1250    88              26      23.0000000   16.11111  30.0%  27.5    1s
* 1280    76              28      22.0000000   16.20000  26.4%  27.3    1s

Explored 1503 nodes (38912 simplex iterations) in 1.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%