Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:27:10 2012 Optimize a model with 241 rows, 696 columns and 696 nonzeros Model has 480 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.80s Presolved: 241 rows, 674 columns, 674 nonzeros Variable types: 480 continuous, 194 integer (193 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 0 111.0000000 - - - 2s 0 0 0.00000 0 8 111.00000 0.00000 100% - 2s 0 0 0.00000 0 94 111.00000 0.00000 100% - 2s 0 0 0.00000 0 159 111.00000 0.00000 100% - 2s 0 2 0.00000 0 155 111.00000 0.00000 100% - 2s H 44 44 23.0000000 2.10811 90.8% 42.2 3s * 45 39 28 22.0000000 2.10811 90.4% 42.4 3s * 90 69 35 20.0000000 2.12414 89.4% 31.5 3s * 324 133 24 16.0000000 3.52688 78.0% 24.8 3s 703 246 6.94993 17 421 16.00000 6.94993 56.6% 34.7 5s * 2106 106 42 15.0000000 12.00000 20.0% 34.4 8s Explored 2240 nodes (77897 simplex iterations) in 8.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%