Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:20:01 2012 Optimize a model with 281 rows, 801 columns and 801 nonzeros Model has 560 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 3.27s Presolved: 281 rows, 786 columns, 786 nonzeros Variable types: 560 continuous, 226 integer (225 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 142.0000000 - - - 3s 0 0 0.00000 0 17 142.00000 0.00000 100% - 3s 0 0 0.00000 0 136 142.00000 0.00000 100% - 3s 0 0 0.00000 0 127 142.00000 0.00000 100% - 3s 0 2 0.00000 0 127 142.00000 0.00000 100% - 3s H 54 54 46.0000000 1.68783 96.3% 40.7 3s * 76 72 53 31.0000000 1.68783 94.6% 34.8 3s H 125 72 23.0000000 1.75008 92.4% 29.8 3s * 129 71 20 22.0000000 1.75008 92.0% 31.3 3s H 149 72 21.0000000 2.08995 90.0% 31.6 3s H 151 68 20.0000000 2.08995 89.6% 31.4 3s * 151 62 18 19.0000000 2.08995 89.0% 31.5 3s 606 261 5.85164 15 485 19.00000 5.85164 69.2% 32.3 5s * 741 303 42 17.0000000 5.85164 65.6% 40.7 6s 1782 232 cutoff 37 17.00000 11.00000 35.3% 45.7 10s * 2414 146 38 16.0000000 12.50000 21.9% 45.4 12s Explored 2668 nodes (124421 simplex iterations) in 13.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%