Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:56 2012 Optimize a model with 80 rows, 210 columns and 210 nonzeros Model has 158 quadratic constraints Presolve time: 0.93s Presolved: 80 rows, 210 columns, 210 nonzeros Variable types: 158 continuous, 52 integer (52 binary) Root relaxation: objective 0.000000e+00, 26 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 42.0000000 - - - 0s 0 0 0.00000 0 5 42.00000 0.00000 100% - 0s 0 0 0.00000 0 40 42.00000 0.00000 100% - 0s 0 0 0.00000 0 30 42.00000 0.00000 100% - 0s 0 2 0.00000 0 30 42.00000 0.00000 100% - 0s * 26 24 17 14.0000000 3.00000 78.6% 22.0 0s * 48 31 14 13.0000000 3.06122 76.5% 17.8 0s H 57 25 11.0000000 3.82609 65.2% 17.5 0s * 95 21 6 9.0000000 4.16667 53.7% 17.3 0s Cutting planes: Explored 143 nodes (3171 simplex iterations) in 1.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%