Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:32 2012 Optimize a model with 51 rows, 114 columns and 114 nonzeros Model has 100 quadratic constraints Presolve time: 0.60s Presolved: 51 rows, 114 columns, 114 nonzeros Variable types: 100 continuous, 14 integer (14 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 26.0000000 - - - 0s 0 0 0.00000 0 14 26.00000 0.00000 100% - 0s 0 0 0.58333 0 14 26.00000 0.58333 97.8% - 0s 0 2 0.62821 0 14 26.00000 0.62821 97.6% - 0s * 17 17 11 24.0000000 4.37500 81.8% 15.9 0s * 22 16 11 21.0000000 4.37500 79.2% 13.3 0s * 36 19 8 20.0000000 4.40000 78.0% 13.4 0s * 47 24 8 19.0000000 8.54545 55.0% 14.1 0s Cutting planes: Gomory: 1 Explored 143 nodes (1718 simplex iterations) in 0.64 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%