Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:22 2012 Optimize a model with 39 rows, 88 columns and 88 nonzeros Model has 76 quadratic constraints Presolve time: 0.44s Presolved: 39 rows, 88 columns, 88 nonzeros Variable types: 76 continuous, 12 integer (12 binary) Root relaxation: objective 0.000000e+00, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 24.0000000 - - - 0s 0 0 0.00000 0 10 24.00000 0.00000 100% - 0s 0 0 0.50000 0 12 24.00000 0.50000 97.9% - 0s 0 0 0.50000 0 12 24.00000 0.50000 97.9% - 0s 0 2 0.55556 0 12 24.00000 0.55556 97.7% - 0s * 12 12 7 17.0000000 3.25000 80.9% 12.7 0s * 26 14 8 16.0000000 3.25000 79.7% 10.7 0s H 29 11 15.0000000 3.25000 78.3% 9.7 0s Cutting planes: Gomory: 2 Explored 111 nodes (969 simplex iterations) in 0.47 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%