Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:25:57 2012 Optimize a model with 240 rows, 694 columns and 694 nonzeros Model has 478 quadratic constraints Presolve removed 0 rows and 17 columns Presolve time: 2.79s Presolved: 240 rows, 677 columns, 677 nonzeros Variable types: 478 continuous, 199 integer (198 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 121.0000000 - - - 2s 0 0 0.00000 0 2 121.00000 0.00000 100% - 2s 0 0 0.00000 0 6 121.00000 0.00000 100% - 2s 0 0 0.00000 0 96 121.00000 0.00000 100% - 2s 0 2 0.00000 0 96 121.00000 0.00000 100% - 2s H 40 40 28.0000000 2.02857 92.8% 34.5 3s * 40 40 28 23.0000000 2.02857 91.2% 35.5 3s H 77 67 22.0000000 2.08333 90.5% 25.3 3s * 94 78 41 20.0000000 2.08333 89.6% 25.2 3s H 138 84 18.0000000 2.28571 87.3% 20.5 3s * 141 80 38 17.0000000 2.28571 86.6% 21.3 3s * 186 83 36 15.0000000 2.76923 81.5% 19.9 3s H 298 80 14.0000000 4.07080 70.9% 17.0 3s 607 135 7.31507 11 650 14.00000 7.31507 47.7% 21.5 5s * 2277 3 48 13.0000000 13.00000 0.0% 27.5 8s Explored 2278 nodes (64508 simplex iterations) in 8.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%