Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:38 2012 Optimize a model with 53 rows, 119 columns and 119 nonzeros Model has 104 quadratic constraints Presolve time: 0.61s Presolved: 53 rows, 119 columns, 119 nonzeros Variable types: 104 continuous, 15 integer (15 binary) Root relaxation: objective 0.000000e+00, 7 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 31.0000000 - - - 0s 0 0 0.00000 0 14 31.00000 0.00000 100% - 0s 0 0 0.45714 0 15 31.00000 0.45714 98.5% - 0s 0 2 0.57143 0 15 31.00000 0.57143 98.2% - 0s * 19 19 13 23.0000000 3.75510 83.7% 11.7 0s * 22 16 11 22.0000000 3.75510 82.9% 10.5 0s * 32 19 8 19.0000000 4.44444 76.6% 12.6 0s Cutting planes: Gomory: 1 Explored 197 nodes (2465 simplex iterations) in 0.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%