Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:37:01 2012
Optimize a model with 547 rows, 492 columns and 1857 nonzeros
Presolve removed 0 rows and 21 columns
Presolve time: 0.00s
Presolved: 547 rows, 471 columns, 1836 nonzeros
Variable types: 0 continuous, 471 integer (470 binary)
Found heuristic solution: objective 112.0000000
Root relaxation: objective 0.000000e+00, 287 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 0 197 112.00000 0.00000 100% - 0s
H 0 0 99.0000000 0.00000 100% - 0s
H 0 0 84.0000000 0.00000 100% - 0s
0 0 0.32354 0 199 84.00000 0.32354 100% - 0s
H 0 0 83.0000000 0.32354 100% - 0s
0 0 0.96299 0 202 83.00000 0.96299 98.8% - 0s
H 0 0 63.0000000 0.96299 98.5% - 0s
H 0 0 48.0000000 0.96299 98.0% - 0s
0 0 0.96308 0 203 48.00000 0.96308 98.0% - 0s
0 0 0.96308 0 203 48.00000 0.96308 98.0% - 0s
H 0 0 47.0000000 0.96308 98.0% - 0s
0 2 0.96321 0 203 47.00000 0.96321 98.0% - 0s
H 27 27 45.0000000 1.09127 97.6% 30.2 0s
H 53 49 25.0000000 1.09127 95.6% 33.3 0s
* 84 67 21 23.0000000 1.09284 95.2% 37.3 0s
H 288 184 21.0000000 1.22478 94.2% 42.5 0s
* 534 214 18 20.0000000 2.84000 85.8% 45.5 1s
H 633 184 19.0000000 4.14697 78.2% 46.2 1s
Explored 2251 nodes (81839 simplex iterations) in 3.83 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%