Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:25:16 2012
Optimize a model with 253 rows, 199 columns and 829 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 253 rows, 198 columns, 828 nonzeros
Variable types: 0 continuous, 198 integer (197 binary)
Found heuristic solution: objective 52.0000000
Root relaxation: objective 0.000000e+00, 116 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 71 52.00000 0.00000 100% - 0s
H 0 0 49.0000000 0.00000 100% - 0s
H 0 0 43.0000000 0.00000 100% - 0s
H 0 0 40.0000000 0.00000 100% - 0s
0 0 0.49296 0 72 40.00000 0.49296 98.8% - 0s
H 0 0 39.0000000 0.49296 98.7% - 0s
0 0 1.15996 0 73 39.00000 1.15996 97.0% - 0s
H 0 0 37.0000000 1.15996 96.9% - 0s
0 0 1.37670 0 74 37.00000 1.37670 96.3% - 0s
0 0 1.39530 0 76 37.00000 1.39530 96.2% - 0s
H 0 0 32.0000000 1.39530 95.6% - 0s
H 0 0 30.0000000 1.39530 95.3% - 0s
0 2 1.40327 0 76 30.00000 1.40327 95.3% - 0s
* 33 28 22 27.0000000 4.15013 84.6% 24.6 0s
H 71 44 25.0000000 4.21360 83.1% 21.5 0s
* 94 58 17 24.0000000 5.77518 75.9% 22.7 0s
* 135 82 22 23.0000000 5.79651 74.8% 23.0 0s
* 185 102 15 22.0000000 8.11259 63.1% 22.7 0s
* 211 103 18 21.0000000 8.14628 61.2% 22.0 0s
* 257 99 11 20.0000000 8.22084 58.9% 22.4 0s
* 554 112 10 19.0000000 12.23356 35.6% 21.7 0s
Cutting planes:
Gomory: 4
Mod-K: 1
Explored 977 nodes (19679 simplex iterations) in 0.65 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%