Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:30 2012 Optimize a model with 162 rows, 501 columns and 501 nonzeros Model has 322 quadratic constraints Presolve removed 0 rows and 31 columns Presolve time: 1.87s Presolved: 162 rows, 470 columns, 470 nonzeros Variable types: 322 continuous, 148 integer (147 binary) Root relaxation: objective 0.000000e+00, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 88.0000000 - - - 1s 0 0 0.00000 0 54 88.00000 0.00000 100% - 1s 0 0 0.00000 0 59 88.00000 0.00000 100% - 1s 0 0 0.00000 0 3 88.00000 0.00000 100% - 1s 0 2 0.00000 0 98 88.00000 0.00000 100% - 1s H 27 27 8.0000000 0.81802 89.8% 41.3 1s * 28 28 17 7.0000000 0.81802 88.3% 40.8 1s H 67 41 7.0000000 1.07258 84.7% 21.6 1s * 118 32 10 6.0000000 2.12352 64.6% 19.5 2s Cutting planes: Explored 253 nodes (4892 simplex iterations) in 2.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%