Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:58 2012 Optimize a model with 71 rows, 157 columns and 157 nonzeros Model has 140 quadratic constraints Presolve time: 0.81s Presolved: 71 rows, 157 columns, 157 nonzeros Variable types: 140 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 33.0000000 - - - 0s 0 0 0.00000 0 16 33.00000 0.00000 100% - 0s 0 0 0.46324 0 17 33.00000 0.46324 98.6% - 0s 0 2 0.60577 0 17 33.00000 0.60577 98.2% - 0s * 27 27 14 31.0000000 2.87500 90.7% 16.5 0s * 85 51 12 28.0000000 7.20000 74.3% 15.9 0s * 314 85 12 27.0000000 14.78698 45.2% 15.1 0s Cutting planes: Gomory: 1 Explored 831 nodes (11613 simplex iterations) in 1.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%