Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:30:09 2012

Optimize a model with 251 rows, 201 columns and 826 nonzeros
Presolve removed 0 rows and 4 columns
Presolve time: 0.00s
Presolved: 251 rows, 197 columns, 822 nonzeros
Variable types: 0 continuous, 197 integer (196 binary)
Found heuristic solution: objective 53.0000000

Root relaxation: objective 0.000000e+00, 106 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   68   53.00000    0.00000   100%     -    0s
H    0     0                      47.0000000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
     0     0    0.44118    0   69   36.00000    0.44118  98.8%     -    0s
H    0     0                      35.0000000    0.44118  98.7%     -    0s
     0     0    1.05372    0   71   35.00000    1.05372  97.0%     -    0s
     0     0    1.23784    0   71   35.00000    1.23784  96.5%     -    0s
     0     0    1.23784    0   71   35.00000    1.23784  96.5%     -    0s
     0     2    1.24959    0   71   35.00000    1.24959  96.4%     -    0s
*   21    21              13      26.0000000    3.55008  86.3%  40.0    0s
*   24    19              12      25.0000000    3.55008  85.8%  36.8    0s
H   27    17                      24.0000000    3.55008  85.2%  33.0    0s
*   48    31              15      22.0000000    3.70538  83.2%  32.1    0s
*   77    39              21      21.0000000    8.38594  60.1%  25.4    0s
*  110    53              13      20.0000000    9.23077  53.8%  24.1    0s
*  864    38              15      19.0000000   16.38235  13.8%  13.5    0s

Cutting planes:
  Gomory: 3

Explored 919 nodes (12499 simplex iterations) in 0.45 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%