Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:39:29 2012 Optimize a model with 198 rows, 455 columns and 455 nonzeros Model has 394 quadratic constraints Presolve time: 2.29s Presolved: 198 rows, 455 columns, 455 nonzeros Variable types: 394 continuous, 61 integer (61 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 87.0000000 - - - 2s 0 0 0.00000 0 12 87.00000 0.00000 100% - 2s 0 0 0.00000 0 60 87.00000 0.00000 100% - 2s 0 0 0.00000 0 59 87.00000 0.00000 100% - 2s 0 2 0.00000 0 59 87.00000 0.00000 100% - 2s H 54 54 65.0000000 5.00000 92.3% 39.7 2s * 63 61 32 59.0000000 5.00000 91.5% 39.7 2s * 218 173 28 58.0000000 7.19231 87.6% 41.7 2s H 261 157 47.0000000 7.35593 84.3% 44.5 2s 878 426 39.27778 40 252 47.00000 17.92157 61.9% 55.8 5s 4862 1927 cutoff 50 47.00000 28.51111 39.3% 27.9 10s 9238 3080 38.46154 30 258 47.00000 33.00000 29.8% 23.9 15s 13959 3958 41.71158 31 266 47.00000 35.70000 24.0% 21.9 20s 18729 4351 cutoff 42 47.00000 37.69841 19.8% 20.8 25s 23690 4377 43.50000 40 238 47.00000 39.20000 16.6% 20.1 30s 28731 3970 41.36735 36 273 47.00000 40.64198 13.5% 19.6 35s 33680 2837 45.50000 44 243 47.00000 42.26667 10.1% 19.5 40s Explored 38835 nodes (748471 simplex iterations) in 44.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000005e+01, best bound 4.700000000005e+01, gap 0.0%