Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:08:54 2012 Optimize a model with 220 rows, 643 columns and 643 nonzeros Model has 438 quadratic constraints Presolve removed 0 rows and 15 columns Presolve time: 2.56s Presolved: 220 rows, 628 columns, 628 nonzeros Variable types: 438 continuous, 190 integer (189 binary) Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 110.0000000 - - - 2s 0 0 0.00000 0 3 110.00000 0.00000 100% - 2s 0 0 0.00000 0 36 110.00000 0.00000 100% - 2s 0 0 0.00000 0 118 110.00000 0.00000 100% - 2s 0 2 0.00000 0 113 110.00000 0.00000 100% - 2s H 27 25 16.0000000 2.11538 86.8% 39.3 2s * 55 37 24 13.0000000 2.17054 83.3% 29.4 2s * 86 41 13 12.0000000 4.07299 66.1% 25.0 2s * 201 54 20 11.0000000 5.00000 54.5% 20.4 2s Cutting planes: Explored 593 nodes (12821 simplex iterations) in 3.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%