Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:27 2012 Optimize a model with 92 rows, 222 columns and 222 nonzeros Model has 182 quadratic constraints Presolve time: 1.06s Presolved: 92 rows, 222 columns, 222 nonzeros Variable types: 182 continuous, 40 integer (40 binary) Root relaxation: objective 0.000000e+00, 20 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 52.0000000 - - - 1s 0 0 0.00000 0 24 52.00000 0.00000 100% - 1s 0 0 0.11742 0 33 52.00000 0.11742 100% - 1s 0 2 0.16667 0 33 52.00000 0.16667 100% - 1s * 31 31 18 23.0000000 4.99653 78.3% 20.5 1s * 32 30 18 22.0000000 4.99653 77.3% 19.8 1s H 67 40 18.0000000 5.58560 69.0% 19.9 1s * 86 40 10 16.0000000 5.62922 64.8% 19.8 1s * 100 28 6 14.0000000 6.31242 54.9% 20.2 1s Cutting planes: Gomory: 1 Explored 193 nodes (3936 simplex iterations) in 1.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%