Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:22:05 2012 Optimize a model with 383 rows, 281 columns and 1236 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 383 rows, 280 columns, 1235 nonzeros Variable types: 0 continuous, 280 integer (279 binary) Found heuristic solution: objective 84.0000000 Root relaxation: objective 0.000000e+00, 126 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 88 84.00000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.53875 0 89 56.00000 0.53875 99.0% - 0s H 0 0 55.0000000 0.53875 99.0% - 0s 0 0 1.07024 0 91 55.00000 1.07024 98.1% - 0s 0 0 1.15268 0 92 55.00000 1.15268 97.9% - 0s 0 0 1.15299 0 92 55.00000 1.15299 97.9% - 0s 0 0 1.15299 0 92 55.00000 1.15299 97.9% - 0s 0 2 1.15332 0 92 55.00000 1.15332 97.9% - 0s H 36 36 49.0000000 2.91043 94.1% 36.3 0s * 46 39 30 43.0000000 2.91043 93.2% 30.5 0s * 206 151 26 39.0000000 6.14536 84.2% 32.5 0s * 284 202 26 38.0000000 7.12384 81.3% 33.2 0s * 346 245 28 37.0000000 7.13375 80.7% 33.6 0s * 1254 413 27 36.0000000 18.41429 48.8% 28.9 1s * 1290 390 26 35.0000000 18.45455 47.3% 28.6 1s H 2215 458 34.0000000 22.11268 35.0% 24.3 2s 5489 388 31.52000 22 135 34.00000 27.20000 20.0% 20.6 5s Explored 7455 nodes (147101 simplex iterations) in 6.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%