Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:29 2012 Optimize a model with 63 rows, 160 columns and 160 nonzeros Model has 124 quadratic constraints Presolve time: 0.72s Presolved: 63 rows, 160 columns, 160 nonzeros Variable types: 124 continuous, 36 integer (36 binary) Root relaxation: objective 0.000000e+00, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 38.0000000 - - - 0s 0 0 0.00000 0 31 38.00000 0.00000 100% - 0s 0 0 0.27160 0 32 38.00000 0.27160 99.3% - 0s 0 0 0.27160 0 32 38.00000 0.27160 99.3% - 0s 0 2 0.34328 0 32 38.00000 0.34328 99.1% - 0s H 8 8 24.0000000 1.37037 94.3% 13.8 0s * 26 26 17 14.0000000 1.37037 90.2% 12.5 0s * 28 23 18 13.0000000 1.37037 89.5% 11.9 0s * 80 42 10 12.0000000 3.06667 74.4% 16.4 0s Cutting planes: Gomory: 1 Explored 393 nodes (6511 simplex iterations) in 0.85 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%