Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:54:08 2012 Optimize a model with 168 rows, 520 columns and 520 nonzeros Model has 334 quadratic constraints Presolve removed 0 rows and 30 columns Presolve time: 1.95s Presolved: 168 rows, 490 columns, 490 nonzeros Variable types: 334 continuous, 156 integer (155 binary) Root relaxation: objective 0.000000e+00, 61 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 80.0000000 - - - 1s 0 0 0.00000 0 90 80.00000 0.00000 100% - 1s 0 0 0.00000 0 116 80.00000 0.00000 100% - 1s 0 0 0.00000 0 116 80.00000 0.00000 100% - 2s 0 2 0.00000 0 116 80.00000 0.00000 100% - 2s H 27 27 12.0000000 1.26667 89.4% 30.5 2s * 36 27 23 7.0000000 1.26667 81.9% 28.5 2s H 48 17 6.0000000 1.27273 78.8% 24.1 2s * 64 16 19 5.0000000 1.27273 74.5% 28.8 2s Cutting planes: Gomory: 3 Explored 196 nodes (4966 simplex iterations) in 2.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%