Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:46:12 2012 Optimize a model with 124 rows, 298 columns and 298 nonzeros Model has 246 quadratic constraints Presolve time: 1.43s Presolved: 124 rows, 298 columns, 298 nonzeros Variable types: 246 continuous, 52 integer (52 binary) Root relaxation: objective 0.000000e+00, 26 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 72.0000000 - - - 1s 0 0 0.00000 0 28 72.00000 0.00000 100% - 1s 0 0 0.02280 0 47 72.00000 0.02280 100% - 1s 0 2 0.08571 0 47 72.00000 0.08571 100% - 1s * 39 39 22 34.0000000 5.35714 84.2% 29.5 1s * 41 39 22 33.0000000 5.35714 83.8% 30.9 1s * 44 36 21 32.0000000 5.35714 83.3% 29.6 1s H 72 60 31.0000000 5.38710 82.6% 27.2 1s H 96 68 28.0000000 5.75000 79.5% 27.2 1s * 214 137 12 27.0000000 7.22222 73.3% 29.6 1s * 1938 338 38 26.0000000 17.26829 33.6% 25.4 3s Explored 3258 nodes (69445 simplex iterations) in 4.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%