Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:44:17 2012 Optimize a model with 177 rows, 432 columns and 432 nonzeros Model has 352 quadratic constraints Presolve time: 2.05s Presolved: 177 rows, 432 columns, 432 nonzeros Variable types: 352 continuous, 80 integer (80 binary) Root relaxation: objective 0.000000e+00, 40 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 85.0000000 - - - 2s 0 0 0.00000 0 39 85.00000 0.00000 100% - 2s 0 0 0.00000 0 73 85.00000 0.00000 100% - 2s 0 0 0.00000 0 73 85.00000 0.00000 100% - 2s 0 2 0.00000 0 73 85.00000 0.00000 100% - 2s H 45 45 42.0000000 5.12500 87.8% 38.2 2s * 46 46 27 40.0000000 5.12500 87.2% 37.9 2s H 164 119 37.0000000 6.91304 81.3% 36.2 2s * 170 102 18 34.0000000 6.91304 79.7% 35.4 2s 1611 540 21.52055 31 266 34.00000 14.69565 56.8% 33.3 5s * 3072 1006 45 33.0000000 19.00000 42.4% 26.4 6s H 5173 1271 32.0000000 22.23256 30.5% 23.5 9s 5227 1277 24.11429 38 256 32.00000 22.32000 30.2% 23.4 10s 6908 1329 28.50000 32 272 32.00000 24.03279 24.9% 22.2 15s 10319 1013 cutoff 37 32.00000 27.00000 15.6% 20.5 20s Explored 12811 nodes (252346 simplex iterations) in 22.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%