Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:37:43 2012 Optimize a model with 173 rows, 422 columns and 422 nonzeros Model has 344 quadratic constraints Presolve time: 2.00s Presolved: 173 rows, 422 columns, 422 nonzeros Variable types: 344 continuous, 78 integer (78 binary) Root relaxation: objective 0.000000e+00, 39 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 88.0000000 - - - 2s 0 0 0.00000 0 39 88.00000 0.00000 100% - 2s 0 0 0.00000 0 76 88.00000 0.00000 100% - 2s 0 0 0.00000 0 76 88.00000 0.00000 100% - 2s 0 2 0.04473 0 76 88.00000 0.04473 100% - 2s H 53 53 39.0000000 4.62500 88.1% 31.2 2s * 84 60 17 35.0000000 4.68182 86.6% 31.8 2s * 864 377 48 34.0000000 14.46154 57.5% 41.5 4s 1570 465 21.79786 30 254 34.00000 16.50000 51.5% 33.3 5s H 1945 566 33.0000000 17.71246 46.3% 30.8 5s 3748 929 29.24900 32 265 33.00000 22.10606 33.0% 25.3 10s 6781 1200 25.95238 32 240 33.00000 25.00000 24.2% 21.6 15s 10190 1104 29.89062 38 244 33.00000 27.17391 17.7% 20.1 20s Explored 14039 nodes (268429 simplex iterations) in 23.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%