Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:44 2012 Optimize a model with 39 rows, 112 columns and 112 nonzeros Model has 76 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.44s Presolved: 39 rows, 109 columns, 109 nonzeros Variable types: 76 continuous, 33 integer (32 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 25.0000000 - - - 0s 0 0 0.00000 0 3 25.00000 0.00000 100% - 0s 0 0 0.00000 0 24 25.00000 0.00000 100% - 0s 0 0 0.00000 0 17 25.00000 0.00000 100% - 0s 0 2 0.00000 0 17 25.00000 0.00000 100% - 0s H 8 8 5.0000000 1.31579 73.7% 21.2 0s * 10 10 7 4.0000000 1.31579 67.1% 20.1 0s Cutting planes: Explored 98 nodes (907 simplex iterations) in 0.48 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%