Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:40:07 2012 Optimize a model with 251 rows, 719 columns and 719 nonzeros Model has 500 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 2.92s Presolved: 251 rows, 700 columns, 700 nonzeros Variable types: 500 continuous, 200 integer (199 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 116.0000000 - - - 2s 0 0 0.00000 0 11 116.00000 0.00000 100% - 2s 0 0 0.00000 0 17 116.00000 0.00000 100% - 2s 0 0 0.00000 0 2 116.00000 0.00000 100% - 2s 0 2 0.00000 0 106 116.00000 0.00000 100% - 3s H 54 54 23.0000000 1.46429 93.6% 27.1 3s H 132 85 22.0000000 1.60317 92.7% 20.6 3s * 170 78 59 21.0000000 1.60317 92.4% 20.0 3s * 216 97 39 20.0000000 1.61017 91.9% 20.3 3s * 274 126 26 19.0000000 1.90909 90.0% 19.9 3s * 694 309 29 17.0000000 5.45902 67.9% 30.1 4s 713 313 11.87135 18 397 17.00000 5.45902 67.9% 32.7 5s 2164 432 16.60690 20 348 17.00000 10.44828 38.5% 44.5 10s 2440 464 14.88889 23 313 17.00000 10.95489 35.6% 45.0 16s 2667 491 cutoff 22 17.00000 11.13600 34.5% 46.5 20s 3637 578 16.35821 20 492 17.00000 12.24242 28.0% 47.3 25s * 3955 515 27 16.0000000 12.43396 22.3% 47.3 26s 5341 307 14.69231 18 368 16.00000 14.00000 12.5% 48.0 30s Explored 6024 nodes (280736 simplex iterations) in 32.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%