Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:33:19 2012 Optimize a model with 569 rows, 514 columns and 1934 nonzeros Presolve removed 0 rows and 11 columns Presolve time: 0.00s Presolved: 569 rows, 503 columns, 1923 nonzeros Variable types: 0 continuous, 503 integer (502 binary) Found heuristic solution: objective 118.0000000 Root relaxation: objective 0.000000e+00, 261 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 0 218 118.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 67.0000000 0.00000 100% - 0s 0 0 0.47248 0 219 67.00000 0.47248 99.3% - 0s H 0 0 57.0000000 0.47248 99.2% - 0s 0 0 0.74638 0 220 57.00000 0.74638 98.7% - 0s H 0 0 47.0000000 0.74638 98.4% - 0s 0 0 1.00000 0 218 47.00000 1.00000 97.9% - 0s H 0 0 43.0000000 1.00000 97.7% - 0s 0 0 1.00000 0 220 43.00000 1.00000 97.7% - 0s 0 0 1.00000 0 218 43.00000 1.00000 97.7% - 0s 0 0 1.00000 0 218 43.00000 1.00000 97.7% - 0s 0 2 1.00000 0 218 43.00000 1.00000 97.7% - 0s * 42 40 22 24.0000000 2.57051 89.3% 41.1 0s * 82 53 25 23.0000000 2.61165 88.6% 38.3 0s H 162 117 22.0000000 3.77252 82.9% 35.7 0s * 170 60 67 21.0000000 3.77252 82.0% 34.8 0s * 646 164 32 20.0000000 10.95000 45.2% 35.1 1s 3658 772 18.37349 21 194 20.00000 14.02797 29.9% 23.1 5s 8223 930 18.22857 25 172 20.00000 16.00000 20.0% 21.1 10s Explored 12817 nodes (277409 simplex iterations) in 14.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%