Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:25:44 2012 Optimize a model with 189 rows, 404 columns and 404 nonzeros Model has 376 quadratic constraints Presolve time: 2.19s Presolved: 189 rows, 404 columns, 404 nonzeros Variable types: 376 continuous, 28 integer (28 binary) Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 102.0000000 - - - 2s 0 0 0.00000 0 26 102.00000 0.00000 100% - 2s 0 0 0.50000 0 28 102.00000 0.50000 100% - 2s 0 0 0.50000 0 28 102.00000 0.50000 100% - 2s 0 2 0.50000 0 28 102.00000 0.50000 100% - 2s * 38 38 21 81.0000000 6.74167 91.7% 41.9 2s * 162 129 16 79.0000000 11.27333 85.7% 46.5 2s * 325 214 20 78.0000000 19.46758 75.0% 46.3 2s * 821 413 56 76.0000000 29.58333 61.1% 53.4 4s 1235 482 42.17391 34 243 76.00000 29.58333 61.1% 46.2 5s H 3261 996 75.0000000 45.14286 39.8% 32.6 8s * 3638 1079 42 72.0000000 46.00000 36.1% 31.2 9s 4432 1236 68.07692 42 220 72.00000 47.50000 34.0% 29.8 10s 6938 1389 69.12500 39 207 72.00000 53.00000 26.4% 27.8 15s 11448 1089 67.41176 37 219 72.00000 59.83333 16.9% 26.1 20s Explored 14631 nodes (363285 simplex iterations) in 22.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.200000000000e+01, best bound 7.200000000000e+01, gap 0.0%