Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:18 2012 Optimize a model with 72 rows, 177 columns and 177 nonzeros Model has 142 quadratic constraints Presolve time: 0.83s Presolved: 72 rows, 177 columns, 177 nonzeros Variable types: 142 continuous, 35 integer (35 binary) Root relaxation: objective 0.000000e+00, 17 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 18 33.00000 0.00000 100% - 0s 0 0 0.08511 0 34 33.00000 0.08511 100% - 0s 0 0 0.08511 0 34 33.00000 0.08511 100% - 0s 0 2 0.09045 0 34 33.00000 0.09045 100% - 0s * 22 22 12 17.0000000 4.06061 76.1% 22.3 0s * 65 37 9 15.0000000 4.19048 72.1% 21.6 0s Cutting planes: Gomory: 1 Explored 506 nodes (8540 simplex iterations) in 1.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%