Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:52 2012 Optimize a model with 113 rows, 269 columns and 269 nonzeros Model has 224 quadratic constraints Presolve time: 1.31s Presolved: 113 rows, 269 columns, 269 nonzeros Variable types: 224 continuous, 45 integer (45 binary) Root relaxation: objective 0.000000e+00, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 67.0000000 - - - 1s 0 0 0.00000 0 24 67.00000 0.00000 100% - 1s 0 0 0.04372 0 45 67.00000 0.04372 100% - 1s 0 2 0.07186 0 45 67.00000 0.07186 100% - 1s * 40 40 23 31.0000000 2.17391 93.0% 23.8 1s H 287 140 28.0000000 9.76471 65.1% 23.0 1s * 1390 223 30 27.0000000 20.00000 25.9% 25.0 2s Explored 3002 nodes (61811 simplex iterations) in 3.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%