Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:54 2012 Optimize a model with 60 rows, 164 columns and 164 nonzeros Model has 118 quadratic constraints Presolve time: 0.69s Presolved: 60 rows, 164 columns, 164 nonzeros Variable types: 118 continuous, 46 integer (46 binary) Root relaxation: objective 0.000000e+00, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 28.0000000 - - - 0s 0 0 0.00000 0 32 28.00000 0.00000 100% - 0s 0 0 0.04683 0 41 28.00000 0.04683 100% - 0s 0 2 0.10909 0 41 28.00000 0.10909 100% - 0s * 15 11 12 9.0000000 2.55556 71.6% 17.9 0s * 25 12 7 7.0000000 3.16667 54.8% 16.6 0s * 38 8 6 6.0000000 4.18182 30.3% 15.3 0s Cutting planes: Gomory: 1 Explored 57 nodes (1191 simplex iterations) in 0.73 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%