Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:28:42 2012 Optimize a model with 238 rows, 691 columns and 691 nonzeros Model has 474 quadratic constraints Presolve removed 0 rows and 30 columns Presolve time: 2.77s Presolved: 238 rows, 661 columns, 661 nonzeros Variable types: 474 continuous, 187 integer (186 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 113.0000000 - - - 2s 0 0 0.00000 0 106 113.00000 0.00000 100% - 2s 0 0 0.00000 0 150 113.00000 0.00000 100% - 2s 0 0 0.00000 0 132 113.00000 0.00000 100% - 2s 0 2 0.00000 0 132 113.00000 0.00000 100% - 2s H 45 45 19.0000000 1.94286 89.8% 40.2 2s * 52 34 30 15.0000000 1.94286 87.0% 35.2 2s Cutting planes: Gomory: 1 Explored 1116 nodes (30546 simplex iterations) in 3.96 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%