Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:40 2012 Optimize a model with 143 rows, 451 columns and 451 nonzeros Model has 284 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 1.65s Presolved: 143 rows, 426 columns, 426 nonzeros Variable types: 284 continuous, 142 integer (141 binary) Root relaxation: objective 0.000000e+00, 51 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 4 70.00000 0.00000 100% - 1s 0 0 0.00000 0 48 70.00000 0.00000 100% - 1s 0 2 0.00000 0 48 70.00000 0.00000 100% - 1s * 25 17 19 4.0000000 0.58491 85.4% 32.7 1s H 138 31 4.0000000 2.54545 36.4% 15.7 1s * 149 4 9 3.0000000 2.72500 9.17% 15.3 1s Cutting planes: Explored 154 nodes (3322 simplex iterations) in 1.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%