Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:04 2012 Optimize a model with 233 rows, 666 columns and 666 nonzeros Model has 464 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.71s Presolved: 233 rows, 642 columns, 642 nonzeros Variable types: 464 continuous, 178 integer (177 binary) Root relaxation: objective 0.000000e+00, 81 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 103.0000000 - - - 2s 0 0 0.00000 0 94 103.00000 0.00000 100% - 2s 0 0 0.00000 0 136 103.00000 0.00000 100% - 2s 0 0 0.00000 0 130 103.00000 0.00000 100% - 2s 0 2 0.00000 0 116 103.00000 0.00000 100% - 2s H 51 51 21.0000000 1.26316 94.0% 27.5 2s * 51 51 36 20.0000000 1.26316 93.7% 28.2 2s * 52 48 36 18.0000000 1.26316 93.0% 27.8 2s * 63 42 40 16.0000000 1.26316 92.1% 29.9 2s 801 229 11.08759 21 130 16.00000 7.91429 50.5% 33.9 5s Explored 2107 nodes (66531 simplex iterations) in 7.19 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%