Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:56 2012 Optimize a model with 131 rows, 407 columns and 407 nonzeros Model has 260 quadratic constraints Presolve removed 0 rows and 28 columns Presolve time: 1.52s Presolved: 131 rows, 379 columns, 379 nonzeros Variable types: 260 continuous, 119 integer (118 binary) Root relaxation: objective 0.000000e+00, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 57.0000000 - - - 1s 0 0 0.00000 0 66 57.00000 0.00000 100% - 1s 0 0 0.00000 0 81 57.00000 0.00000 100% - 1s 0 0 0.00000 0 81 57.00000 0.00000 100% - 1s 0 2 0.00000 0 81 57.00000 0.00000 100% - 1s * 19 18 15 8.0000000 1.46535 81.7% 21.6 1s H 81 30 7.0000000 2.89474 58.6% 10.6 1s * 103 50 36 6.0000000 2.89474 51.8% 9.2 1s H 222 73 6.0000000 4.93333 17.8% 11.4 1s * 257 1 7 5.0000000 5.00000 0.0% 10.6 1s Cutting planes: Gomory: 3 Explored 258 nodes (4094 simplex iterations) in 1.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%