Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:42:51 2012 Optimize a model with 248 rows, 714 columns and 714 nonzeros Model has 494 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 2.88s Presolved: 248 rows, 699 columns, 699 nonzeros Variable types: 494 continuous, 205 integer (204 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 0 129.0000000 - - - 2s 0 0 0.00000 0 82 129.00000 0.00000 100% - 2s 0 0 0.00000 0 118 129.00000 0.00000 100% - 2s 0 0 0.00000 0 165 129.00000 0.00000 100% - 3s 0 2 0.00000 0 164 129.00000 0.00000 100% - 3s H 44 44 20.0000000 2.16667 89.2% 37.6 3s * 50 50 32 19.0000000 2.16667 88.6% 39.6 3s H 108 62 15.0000000 2.25434 85.0% 27.6 3s * 109 56 34 14.0000000 2.25434 83.9% 27.5 3s * 130 50 14 13.0000000 2.37500 81.7% 27.2 3s 649 95 9.13725 17 404 13.00000 9.13725 29.7% 34.8 5s * 965 78 36 12.0000000 9.13725 23.9% 39.8 6s Explored 1175 nodes (49076 simplex iterations) in 6.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%