Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:25 2012 Optimize a model with 137 rows, 436 columns and 436 nonzeros Model has 272 quadratic constraints Presolve removed 0 rows and 28 columns Presolve time: 1.59s Presolved: 137 rows, 408 columns, 408 nonzeros Variable types: 272 continuous, 136 integer (135 binary) Root relaxation: objective 0.000000e+00, 49 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 65.0000000 - - - 1s 0 0 0.00000 0 78 65.00000 0.00000 100% - 1s 0 0 0.00000 0 95 65.00000 0.00000 100% - 1s 0 0 0.00000 0 79 65.00000 0.00000 100% - 1s 0 2 0.00000 0 72 65.00000 0.00000 100% - 1s * 25 23 21 6.0000000 0.64583 89.2% 33.1 1s * 26 15 21 5.0000000 0.64583 87.1% 31.9 1s H 45 27 5.0000000 0.64815 87.0% 25.5 1s * 45 17 14 4.0000000 0.64815 83.8% 25.6 1s H 82 12 3.0000000 1.06250 64.6% 20.4 1s * 89 12 7 2.0000000 1.06250 46.9% 20.9 1s Cutting planes: Explored 101 nodes (3538 simplex iterations) in 1.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%