Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:16 2012 Optimize a model with 163 rows, 498 columns and 498 nonzeros Model has 324 quadratic constraints Presolve removed 0 rows and 31 columns Presolve time: 1.89s Presolved: 163 rows, 467 columns, 467 nonzeros Variable types: 324 continuous, 143 integer (142 binary) Root relaxation: objective 0.000000e+00, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 82.0000000 - - - 1s 0 0 0.00000 0 30 82.00000 0.00000 100% - 1s 0 0 0.00000 0 4 82.00000 0.00000 100% - 1s 0 0 0.00000 0 97 82.00000 0.00000 100% - 1s 0 2 0.00000 0 88 82.00000 0.00000 100% - 1s * 23 23 17 9.0000000 0.79455 91.2% 44.2 2s * 67 38 17 8.0000000 1.54586 80.7% 24.5 2s H 135 51 7.0000000 1.97313 71.8% 19.2 2s Cutting planes: Explored 569 nodes (9714 simplex iterations) in 2.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.999999999012e+00, best bound 6.999999999012e+00, gap 0.0%