Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:14:43 2012 Optimize a model with 187 rows, 399 columns and 399 nonzeros Model has 372 quadratic constraints Presolve time: 2.17s Presolved: 187 rows, 399 columns, 399 nonzeros Variable types: 372 continuous, 27 integer (27 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 93.0000000 - - - 2s 0 0 0.00000 0 24 93.00000 0.00000 100% - 2s 0 0 0.58025 0 27 93.00000 0.58025 99.4% - 2s 0 2 0.58667 0 27 93.00000 0.58667 99.4% - 2s * 34 34 18 74.0000000 8.58889 88.4% 43.9 2s 1523 602 cutoff 42 74.00000 29.76582 59.8% 37.9 5s 7001 1883 73.73523 42 194 74.00000 51.93837 29.8% 24.4 10s 13002 2471 69.00684 40 220 74.00000 58.50000 20.9% 21.8 15s *17981 2185 42 72.0000000 62.33333 13.4% 20.9 18s 18352 2088 63.47702 43 220 72.00000 62.78993 12.8% 20.8 20s 20309 1451 cutoff 39 72.00000 65.50000 9.03% 20.6 25s *21481 504 47 71.0000000 68.00000 4.23% 20.3 25s Explored 21997 nodes (439588 simplex iterations) in 25.99 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.100000000000e+01, best bound 7.100000000000e+01, gap 0.0%