Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:00:52 2012 Optimize a model with 213 rows, 620 columns and 620 nonzeros Model has 424 quadratic constraints Presolve removed 0 rows and 17 columns Presolve time: 2.47s Presolved: 213 rows, 603 columns, 603 nonzeros Variable types: 424 continuous, 179 integer (178 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 0 107.0000000 - - - 2s 0 0 0.00000 0 2 107.00000 0.00000 100% - 2s 0 0 0.00000 0 7 107.00000 0.00000 100% - 2s 0 0 0.00000 0 3 107.00000 0.00000 100% - 2s 0 2 0.00000 0 3 107.00000 0.00000 100% - 2s H 24 24 26.0000000 0.22222 99.1% 52.1 2s * 33 33 27 17.0000000 0.22222 98.7% 40.8 2s * 52 32 17 15.0000000 0.27778 98.1% 35.3 2s * 522 227 29 14.0000000 5.28571 62.2% 20.1 3s H 576 190 13.0000000 5.53398 57.4% 20.2 3s 1231 197 10.40645 36 357 13.00000 8.40678 35.3% 26.7 5s Explored 2371 nodes (52552 simplex iterations) in 6.28 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%