Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:19:46 2012 Optimize a model with 127 rows, 315 columns and 315 nonzeros Model has 252 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 1.47s Presolved: 127 rows, 314 columns, 314 nonzeros Variable types: 252 continuous, 62 integer (61 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 59.0000000 - - - 1s 0 0 0.00000 0 2 59.00000 0.00000 100% - 1s 0 0 0.00000 0 55 59.00000 0.00000 100% - 1s 0 0 0.00000 0 44 59.00000 0.00000 100% - 1s 0 2 0.00000 0 44 59.00000 0.00000 100% - 1s H 41 41 32.0000000 2.94737 90.8% 27.0 1s * 41 41 23 30.0000000 2.94737 90.2% 27.5 1s * 86 56 24 26.0000000 3.00000 88.5% 24.0 1s * 218 120 16 24.0000000 5.00000 79.2% 26.0 1s * 1768 192 38 23.0000000 18.03704 21.6% 23.1 3s * 1774 150 41 22.0000000 18.03704 18.0% 23.1 3s Explored 2011 nodes (44402 simplex iterations) in 3.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%