Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:26 2012

Optimize a model with 850 rows, 58 columns and 1700 nonzeros
Presolve removed 597 rows and 0 columns
Presolve time: 0.01s
Presolved: 253 rows, 58 columns, 1511 nonzeros
Variable types: 0 continuous, 58 integer (58 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.806034e+00, 119 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    9.80603    0   50    7.00000    9.80603  40.1%     -    0s
     0     0    9.52388    0   53    7.00000    9.52388  36.1%     -    0s
     0     0    9.45029    0   52    7.00000    9.45029  35.0%     -    0s
H    0     0                       8.0000000    9.45029  18.1%     -    0s
     0     0    9.44529    0   53    8.00000    9.44529  18.1%     -    0s
     0     0    9.43007    0   52    8.00000    9.43007  17.9%     -    0s
     0     0    9.42668    0   53    8.00000    9.42668  17.8%     -    0s
     0     0    9.42230    0   53    8.00000    9.42230  17.8%     -    0s
     0     0    9.41347    0   52    8.00000    9.41347  17.7%     -    0s
     0     0    9.41114    0   53    8.00000    9.41114  17.6%     -    0s
     0     2    9.41075    0   53    8.00000    9.41075  17.6%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 10

Explored 7 nodes (480 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%