Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:00:23 2012 Optimize a model with 214 rows, 622 columns and 622 nonzeros Model has 426 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 2.48s Presolved: 214 rows, 600 columns, 600 nonzeros Variable types: 426 continuous, 174 integer (173 binary) Root relaxation: objective 0.000000e+00, 75 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 112.0000000 - - - 2s 0 0 0.00000 0 82 112.00000 0.00000 100% - 2s 0 0 0.00000 0 117 112.00000 0.00000 100% - 2s 0 0 0.00000 0 111 112.00000 0.00000 100% - 2s 0 2 0.00000 0 111 112.00000 0.00000 100% - 2s H 27 27 22.0000000 1.91407 91.3% 50.8 2s * 70 49 53 21.0000000 1.91407 90.9% 27.6 2s H 129 56 18.0000000 3.34454 81.4% 23.5 2s * 129 53 20 16.0000000 3.34454 79.1% 23.5 2s * 689 266 32 15.0000000 7.57627 49.5% 22.6 4s H 800 264 14.0000000 7.57627 45.9% 25.0 5s * 830 250 33 13.0000000 7.57627 41.7% 26.9 6s Explored 1262 nodes (40653 simplex iterations) in 6.98 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%