Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:03:25 2012 Optimize a model with 225 rows, 647 columns and 647 nonzeros Model has 448 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 2.61s Presolved: 225 rows, 628 columns, 628 nonzeros Variable types: 448 continuous, 180 integer (179 binary) Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 121.0000000 - - - 2s 0 0 0.00000 0 2 121.00000 0.00000 100% - 2s 0 0 0.00000 0 2 121.00000 0.00000 100% - 2s 0 0 0.00000 0 2 121.00000 0.00000 100% - 2s 0 2 0.00000 0 127 121.00000 0.00000 100% - 2s H 44 44 21.0000000 2.09091 90.0% 37.6 2s * 52 52 32 20.0000000 2.09091 89.5% 38.8 2s * 55 52 35 19.0000000 2.09091 89.0% 38.2 2s * 106 59 14 17.0000000 2.20000 87.1% 29.7 2s * 672 245 30 16.0000000 7.79310 51.3% 29.4 4s H 800 226 15.0000000 7.79310 48.0% 34.7 5s * 1087 210 39 14.0000000 7.79310 44.3% 38.5 6s Explored 1568 nodes (57863 simplex iterations) in 7.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%