Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:52 2012 Optimize a model with 57 rows, 144 columns and 144 nonzeros Model has 112 quadratic constraints Presolve time: 0.65s Presolved: 57 rows, 144 columns, 144 nonzeros Variable types: 112 continuous, 32 integer (32 binary) Root relaxation: objective 0.000000e+00, 16 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 12 33.00000 0.00000 100% - 0s 0 0 0.00000 0 19 33.00000 0.00000 100% - 0s 0 0 0.00000 0 19 33.00000 0.00000 100% - 0s 0 2 0.00000 0 19 33.00000 0.00000 100% - 0s * 13 13 10 14.0000000 2.12500 84.8% 20.2 0s * 47 27 13 13.0000000 3.50000 73.1% 15.5 0s * 78 36 9 12.0000000 4.00000 66.7% 14.2 0s Cutting planes: Gomory: 2 Explored 260 nodes (3326 simplex iterations) in 0.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%