Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:49:44 2012 Optimize a model with 156 rows, 487 columns and 487 nonzeros Model has 310 quadratic constraints Presolve removed 0 rows and 27 columns Presolve time: 1.82s Presolved: 156 rows, 460 columns, 460 nonzeros Variable types: 310 continuous, 150 integer (149 binary) Root relaxation: objective 0.000000e+00, 57 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 74.0000000 - - - 1s 0 0 0.00000 0 3 74.00000 0.00000 100% - 1s 0 0 0.00000 0 87 74.00000 0.00000 100% - 1s 0 0 0.00000 0 88 74.00000 0.00000 100% - 1s 0 2 0.00000 0 80 74.00000 0.00000 100% - 1s * 29 27 21 7.0000000 1.26087 82.0% 34.9 1s * 41 24 10 6.0000000 1.66667 72.2% 37.5 1s * 115 31 17 5.0000000 2.35135 53.0% 20.0 1s H 229 56 5.0000000 3.26667 34.7% 14.3 2s * 262 0 4 4.0000000 4.00000 0.0% 13.5 2s Cutting planes: Explored 263 nodes (5263 simplex iterations) in 2.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%