Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:29:08 2012 Optimize a model with 131 rows, 417 columns and 417 nonzeros Model has 260 quadratic constraints Presolve removed 0 rows and 20 columns Presolve time: 1.52s Presolved: 131 rows, 397 columns, 397 nonzeros Variable types: 260 continuous, 137 integer (136 binary) Root relaxation: objective 0.000000e+00, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 54.0000000 - - - 1s 0 0 0.00000 0 49 54.00000 0.00000 100% - 1s 0 0 0.00000 0 66 54.00000 0.00000 100% - 1s 0 0 0.00000 0 66 54.00000 0.00000 100% - 1s 0 2 0.00000 0 99 54.00000 0.00000 100% - 1s * 7 7 5 4.0000000 0.84486 78.9% 90.1 1s * 28 20 16 3.0000000 0.84486 71.8% 32.2 1s H 48 20 3.0000000 0.96104 68.0% 23.2 1s Cutting planes: Gomory: 1 Explored 191 nodes (3390 simplex iterations) in 1.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.999999999025e+00, best bound 2.999999999025e+00, gap 0.0%