Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:02 2012 Optimize a model with 77 rows, 169 columns and 169 nonzeros Model has 152 quadratic constraints Presolve time: 0.89s Presolved: 77 rows, 169 columns, 169 nonzeros Variable types: 152 continuous, 17 integer (17 binary) Root relaxation: objective 0.000000e+00, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 37.0000000 - - - 0s 0 0 0.00000 0 14 37.00000 0.00000 100% - 0s 0 0 0.45098 0 17 37.00000 0.45098 98.8% - 0s 0 2 0.66667 0 17 37.00000 0.66667 98.2% - 0s * 23 23 14 34.0000000 4.73333 86.1% 18.0 0s * 37 29 9 31.0000000 5.00000 83.9% 20.4 0s * 74 39 8 29.0000000 8.98485 69.0% 18.1 0s Cutting planes: Gomory: 1 Explored 400 nodes (6546 simplex iterations) in 1.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%