Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:20:42 2012 Optimize a model with 214 rows, 456 columns and 456 nonzeros Model has 426 quadratic constraints Presolve time: 2.47s Presolved: 214 rows, 456 columns, 456 nonzeros Variable types: 426 continuous, 30 integer (30 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 104.0000000 - - - 2s 0 0 0.00000 0 26 104.00000 0.00000 100% - 2s 0 0 0.55000 0 30 104.00000 0.55000 99.5% - 2s 0 0 0.55000 0 30 104.00000 0.55000 99.5% - 2s 0 2 0.55000 0 30 104.00000 0.55000 99.5% - 2s * 40 40 22 91.0000000 9.85556 89.2% 45.2 2s H 230 185 88.0000000 16.59000 81.1% 51.7 2s * 312 233 17 87.0000000 21.68800 75.1% 50.3 3s H 412 276 86.0000000 24.73077 71.2% 50.0 3s 601 354 64.42857 10 30 86.00000 31.55000 63.3% 48.2 5s 3212 1219 68.65000 32 241 86.00000 42.18182 51.0% 38.4 10s * 5368 1795 45 83.0000000 49.00000 41.0% 33.2 12s 7093 2080 cutoff 52 83.00000 53.29412 35.8% 31.8 15s H 7251 1982 81.0000000 53.68750 33.7% 31.7 15s 9350 2191 78.00000 43 232 81.00000 57.40000 29.1% 30.5 20s 12705 2333 73.38889 37 257 81.00000 61.60000 24.0% 29.1 25s 16343 2202 76.10526 32 257 81.00000 65.25000 19.4% 28.2 30s 18116 2105 cutoff 34 81.00000 66.62500 17.7% 27.7 35s 21522 1562 79.50000 37 236 81.00000 70.33333 13.2% 27.2 40s Explored 25071 nodes (658122 simplex iterations) in 43.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.100000000000e+01, best bound 8.100000000000e+01, gap 0.0%