Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:23:42 2012 Optimize a model with 270 rows, 766 columns and 766 nonzeros Model has 538 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 3.14s Presolved: 270 rows, 741 columns, 741 nonzeros Variable types: 538 continuous, 203 integer (202 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 138.0000000 - - - 3s 0 0 0.00000 0 21 138.00000 0.00000 100% - 3s 0 0 0.00000 0 164 138.00000 0.00000 100% - 3s 0 0 0.00000 0 143 138.00000 0.00000 100% - 3s 0 2 0.00000 0 143 138.00000 0.00000 100% - 3s H 37 37 30.0000000 2.12821 92.9% 60.7 3s * 37 37 21 26.0000000 2.12821 91.8% 61.4 3s H 81 71 24.0000000 2.12987 91.1% 42.9 3s H 159 114 23.0000000 4.06452 82.3% 36.6 3s H 238 142 21.0000000 4.30435 79.5% 30.4 3s 607 294 8.79845 11 728 21.00000 8.79845 58.1% 31.0 5s * 2085 492 49 19.0000000 9.88535 48.0% 35.8 9s 2438 594 cutoff 32 19.00000 10.47059 44.9% 36.1 10s H 3580 642 18.0000000 12.15584 32.5% 35.9 12s 4053 625 15.52542 31 433 18.00000 12.81481 28.8% 34.9 15s 4502 575 16.50000 31 443 18.00000 13.25263 26.4% 35.0 20s 5629 347 cutoff 32 18.00000 14.77966 17.9% 34.5 25s Explored 6272 nodes (222794 simplex iterations) in 28.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%