Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:58 2012 Optimize a model with 142 rows, 445 columns and 445 nonzeros Model has 282 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 1.64s Presolved: 142 rows, 421 columns, 421 nonzeros Variable types: 282 continuous, 139 integer (138 binary) Root relaxation: objective 0.000000e+00, 51 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 72.0000000 - - - 1s 0 0 0.00000 0 63 72.00000 0.00000 100% - 1s 0 0 0.00000 0 104 72.00000 0.00000 100% - 1s 0 0 0.00000 0 78 72.00000 0.00000 100% - 1s 0 2 0.00000 0 63 72.00000 0.00000 100% - 1s H 16 16 6.0000000 0.78261 87.0% 44.9 1s * 19 16 11 4.0000000 0.78261 80.4% 43.2 1s H 118 42 4.0000000 0.89189 77.7% 12.0 1s * 171 0 8 3.0000000 3.00000 0.0% 12.3 1s Cutting planes: Explored 172 nodes (3907 simplex iterations) in 1.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%