Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:47:02 2012 Optimize a model with 247 rows, 713 columns and 713 nonzeros Model has 492 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.87s Presolved: 247 rows, 695 columns, 695 nonzeros Variable types: 492 continuous, 203 integer (202 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 0 123.0000000 - - - 2s 0 0 0.00000 0 90 123.00000 0.00000 100% - 2s 0 0 0.00000 0 155 123.00000 0.00000 100% - 2s 0 0 0.00000 0 147 123.00000 0.00000 100% - 3s 0 2 0.00000 0 105 123.00000 0.00000 100% - 3s H 27 27 35.0000000 2.08333 94.0% 55.7 3s * 43 43 28 18.0000000 2.08333 88.4% 40.4 3s * 131 68 34 16.0000000 2.54839 84.1% 22.9 3s H 205 112 15.0000000 3.07407 79.5% 22.3 3s * 232 106 17 14.0000000 3.21667 77.0% 22.7 3s 665 228 7.87879 14 637 14.00000 7.87879 43.7% 31.0 5s * 802 238 46 13.0000000 7.87879 39.4% 36.6 5s * 910 204 37 12.0000000 7.87879 34.3% 35.0 5s Explored 1109 nodes (39774 simplex iterations) in 6.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%