Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:36:22 2012 Optimize a model with 266 rows, 760 columns and 760 nonzeros Model has 530 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 3.09s Presolved: 266 rows, 735 columns, 735 nonzeros Variable types: 530 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 0 124.0000000 - - - 3s 0 0 0.00000 0 2 124.00000 0.00000 100% - 3s 0 0 0.00000 0 18 124.00000 0.00000 100% - 3s 0 0 0.00000 0 2 124.00000 0.00000 100% - 3s 0 2 0.00000 0 83 124.00000 0.00000 100% - 3s H 54 54 35.0000000 2.41667 93.1% 43.4 3s * 76 72 52 30.0000000 2.41667 91.9% 38.7 3s * 79 57 54 29.0000000 2.41667 91.7% 38.5 3s H 108 80 24.0000000 2.53425 89.4% 33.9 3s H 239 126 21.0000000 3.00000 85.7% 29.7 3s 607 279 7.92593 14 718 21.00000 7.92593 62.3% 30.4 5s * 743 323 44 20.0000000 7.92593 60.4% 38.8 5s H 2182 364 19.0000000 12.97778 31.7% 31.5 8s 2599 361 16.55152 35 407 19.00000 13.69565 27.9% 31.1 10s H 2878 316 18.0000000 14.14925 21.4% 30.6 11s Explored 3545 nodes (105356 simplex iterations) in 13.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%