Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:21:43 2012 Optimize a model with 264 rows, 740 columns and 740 nonzeros Model has 526 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 3.07s Presolved: 264 rows, 725 columns, 725 nonzeros Variable types: 526 continuous, 199 integer (198 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 0 128.0000000 - - - 3s 0 0 0.00000 0 82 128.00000 0.00000 100% - 3s 0 0 0.00000 0 89 128.00000 0.00000 100% - 3s 0 0 0.00000 0 173 128.00000 0.00000 100% - 3s 0 2 0.00000 0 173 128.00000 0.00000 100% - 3s * 42 38 24 26.0000000 4.75676 81.7% 41.4 3s H 108 68 22.0000000 5.18919 76.4% 28.1 3s * 110 65 31 21.0000000 5.18919 75.3% 28.9 3s 606 194 10.94615 13 447 21.00000 10.94615 47.9% 34.2 5s * 1015 277 42 20.0000000 10.94615 45.3% 42.9 6s * 1412 217 35 19.0000000 11.62857 38.8% 38.2 7s 2569 151 cutoff 32 19.00000 15.01550 21.0% 34.0 10s Explored 2952 nodes (100583 simplex iterations) in 11.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%