Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:08:16 2012

Optimize a model with 479 rows, 444 columns and 1639 nonzeros
Presolve removed 0 rows and 24 columns
Presolve time: 0.00s
Presolved: 479 rows, 420 columns, 1615 nonzeros
Variable types: 0 continuous, 420 integer (419 binary)
Found heuristic solution: objective 76.0000000

Root relaxation: objective 0.000000e+00, 240 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  174   76.00000    0.00000   100%     -    0s
H    0     0                      74.0000000    0.00000   100%     -    0s
H    0     0                      70.0000000    0.00000   100%     -    0s
     0     0    0.28125    0  176   70.00000    0.28125   100%     -    0s
H    0     0                      65.0000000    0.28125   100%     -    0s
     0     0    0.85570    0  180   65.00000    0.85570  98.7%     -    0s
H    0     0                      59.0000000    0.85570  98.5%     -    0s
     0     0    0.85570    0  182   59.00000    0.85570  98.5%     -    0s
     0     0    0.85570    0  180   59.00000    0.85570  98.5%     -    0s
H    0     0                      51.0000000    0.85570  98.3%     -    0s
     0     2    0.86354    0  179   51.00000    0.86354  98.3%     -    0s
H   27    27                      45.0000000    1.00000  97.8%  48.8    0s
*   57    42              38      20.0000000    1.00000  95.0%  30.1    0s
H  162   108                      19.0000000    1.00000  94.7%  31.7    0s
* 1955   112              22      18.0000000   13.77174  23.5%  28.7    2s

Explored 2241 nodes (63557 simplex iterations) in 3.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%