Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:50 2012 Optimize a model with 155 rows, 468 columns and 468 nonzeros Model has 308 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 1.80s Presolved: 155 rows, 446 columns, 446 nonzeros Variable types: 308 continuous, 138 integer (137 binary) Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 70.0000000 - - - 1s 0 0 0.00000 0 2 70.00000 0.00000 100% - 1s 0 0 0.00000 0 5 70.00000 0.00000 100% - 1s 0 0 0.00000 0 42 70.00000 0.00000 100% - 1s 0 2 0.00000 0 42 70.00000 0.00000 100% - 1s H 35 35 11.0000000 0.00000 100% 21.6 1s * 44 32 35 10.0000000 0.00000 100% 23.3 1s * 130 57 20 9.0000000 2.40000 73.3% 18.1 1s * 222 52 4 8.0000000 4.43902 44.5% 18.2 1s Cutting planes: Explored 456 nodes (7246 simplex iterations) in 2.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%