Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:24 2012 Optimize a model with 143 rows, 450 columns and 450 nonzeros Model has 284 quadratic constraints Presolve removed 0 rows and 21 columns Presolve time: 1.66s Presolved: 143 rows, 429 columns, 429 nonzeros Variable types: 284 continuous, 145 integer (144 binary) Root relaxation: objective 0.000000e+00, 51 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 72.0000000 - - - 1s 0 0 0.00000 0 47 72.00000 0.00000 100% - 1s 0 0 0.00000 0 61 72.00000 0.00000 100% - 1s 0 0 0.00000 0 17 72.00000 0.00000 100% - 1s 0 2 0.00000 0 17 72.00000 0.00000 100% - 1s H 27 27 8.0000000 0.45455 94.3% 28.1 1s * 28 26 20 6.0000000 0.45455 92.4% 27.5 1s H 40 13 3.0000000 0.69663 76.8% 21.7 1s * 45 11 11 2.0000000 0.69663 65.2% 21.9 1s Cutting planes: Explored 87 nodes (3035 simplex iterations) in 1.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%