Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:19:30 2012 Optimize a model with 100 rows, 260 columns and 260 nonzeros Model has 198 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 1.16s Presolved: 100 rows, 258 columns, 258 nonzeros Variable types: 198 continuous, 60 integer (59 binary) Root relaxation: objective 0.000000e+00, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 46.0000000 - - - 1s 0 0 0.00000 0 5 46.00000 0.00000 100% - 1s 0 0 0.00000 0 12 46.00000 0.00000 100% - 1s 0 0 0.00000 0 8 46.00000 0.00000 100% - 1s 0 2 0.00000 0 8 46.00000 0.00000 100% - 1s * 23 23 18 18.0000000 0.96667 94.6% 27.4 1s H 24 20 17.0000000 0.96667 94.3% 26.3 1s H 88 45 16.0000000 4.72727 70.5% 22.4 1s * 303 64 13 15.0000000 7.75000 48.3% 20.4 1s Cutting planes: Explored 637 nodes (12018 simplex iterations) in 1.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%