Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:16:16 2012 Optimize a model with 224 rows, 657 columns and 657 nonzeros Model has 446 quadratic constraints Presolve removed 0 rows and 27 columns Presolve time: 2.60s Presolved: 224 rows, 630 columns, 630 nonzeros Variable types: 446 continuous, 184 integer (183 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 0 108.0000000 - - - 2s 0 0 0.00000 0 4 108.00000 0.00000 100% - 2s 0 0 0.00000 0 5 108.00000 0.00000 100% - 2s 0 0 0.00000 0 76 108.00000 0.00000 100% - 2s 0 2 0.00000 0 69 108.00000 0.00000 100% - 2s H 50 50 28.0000000 1.77546 93.7% 26.2 2s * 50 50 40 25.0000000 1.77546 92.9% 26.5 2s * 58 50 43 24.0000000 1.77546 92.6% 25.1 2s H 79 43 13.0000000 3.07000 76.4% 21.8 2s * 420 88 23 11.0000000 6.87755 37.5% 17.3 3s Cutting planes: Explored 600 nodes (11786 simplex iterations) in 3.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%