Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:54 2012 Optimize a model with 227 rows, 661 columns and 661 nonzeros Model has 452 quadratic constraints Presolve removed 0 rows and 19 columns Presolve time: 2.66s Presolved: 227 rows, 642 columns, 642 nonzeros Variable types: 452 continuous, 190 integer (189 binary) Root relaxation: objective 0.000000e+00, 79 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 106.0000000 - - - 2s 0 0 0.00000 0 47 106.00000 0.00000 100% - 2s 0 0 0.00000 0 81 106.00000 0.00000 100% - 2s 0 0 0.00000 0 143 106.00000 0.00000 100% - 2s 0 2 0.00000 0 141 106.00000 0.00000 100% - 2s H 36 36 16.0000000 2.81690 82.4% 34.4 2s * 36 34 23 15.0000000 2.81690 81.2% 34.5 2s H 93 57 14.0000000 4.65909 66.7% 28.5 2s * 714 82 15 13.0000000 10.09756 22.3% 19.0 3s 1163 92 cutoff 24 13.00000 12.00000 7.69% 27.1 5s * 1413 44 23 12.0000000 12.00000 0.0% 33.0 5s Explored 1414 nodes (49056 simplex iterations) in 5.56 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%