Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:13 2012 Optimize a model with 178 rows, 536 columns and 536 nonzeros Model has 354 quadratic constraints Presolve removed 0 rows and 18 columns Presolve time: 2.06s Presolved: 178 rows, 518 columns, 518 nonzeros Variable types: 354 continuous, 164 integer (163 binary) Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 93.0000000 - - - 2s 0 0 0.00000 0 2 93.00000 0.00000 100% - 2s 0 0 0.00000 0 51 93.00000 0.00000 100% - 2s 0 0 0.00000 0 34 93.00000 0.00000 100% - 2s 0 2 0.00000 0 110 93.00000 0.00000 100% - 2s * 13 13 10 8.0000000 0.86207 89.2% 59.8 2s H 120 42 8.0000000 2.95349 63.1% 24.3 2s * 166 37 9 7.0000000 3.12500 55.4% 21.1 2s H 173 36 7.0000000 3.57627 48.9% 20.7 2s Cutting planes: Explored 404 nodes (7640 simplex iterations) in 2.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.999999998878e+00, best bound 6.999999998878e+00, gap 0.0%