Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:50:22 2012 Optimize a model with 191 rows, 558 columns and 558 nonzeros Model has 380 quadratic constraints Presolve removed 0 rows and 17 columns Presolve time: 2.28s Presolved: 191 rows, 541 columns, 541 nonzeros Variable types: 380 continuous, 161 integer (160 binary) Root relaxation: objective 0.000000e+00, 67 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 93.0000000 - - - 2s 0 0 0.00000 0 2 93.00000 0.00000 100% - 2s 0 0 0.00000 0 3 93.00000 0.00000 100% - 2s 0 0 0.00000 0 88 93.00000 0.00000 100% - 2s 0 2 0.00000 0 88 93.00000 0.00000 100% - 2s * 21 21 16 11.0000000 1.44118 86.9% 65.6 2s * 48 27 9 10.0000000 1.79487 82.1% 46.7 2s * 125 30 9 9.0000000 3.75000 58.3% 31.1 2s Cutting planes: Explored 278 nodes (8479 simplex iterations) in 2.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%