Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:26 2012 Optimize a model with 131 rows, 419 columns and 419 nonzeros Model has 260 quadratic constraints Presolve removed 0 rows and 30 columns Presolve time: 1.52s Presolved: 131 rows, 389 columns, 389 nonzeros Variable types: 260 continuous, 129 integer (128 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 66.0000000 - - - 1s 0 0 0.00000 0 13 66.00000 0.00000 100% - 1s 0 0 0.00000 0 15 66.00000 0.00000 100% - 1s 0 0 0.00000 0 77 66.00000 0.00000 100% - 1s 0 2 0.00000 0 77 66.00000 0.00000 100% - 1s H 27 25 5.0000000 0.78328 84.3% 26.2 1s H 54 25 4.0000000 0.94675 76.3% 16.4 1s * 116 20 8 3.0000000 1.40828 53.1% 11.8 1s H 130 16 3.0000000 1.64706 45.1% 11.3 1s * 140 0 4 2.0000000 2.00000 0.0% 11.9 1s Cutting planes: Explored 141 nodes (2939 simplex iterations) in 1.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%