Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:25:13 2012 Optimize a model with 201 rows, 428 columns and 428 nonzeros Model has 400 quadratic constraints Presolve time: 2.33s Presolved: 201 rows, 428 columns, 428 nonzeros Variable types: 400 continuous, 28 integer (28 binary) Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 104.0000000 - - - 2s 0 0 0.00000 0 26 104.00000 0.00000 100% - 2s 0 0 0.46154 0 28 104.00000 0.46154 100% - 2s 0 0 0.46154 0 28 104.00000 0.46154 100% - 2s 0 2 0.53846 0 28 104.00000 0.53846 99.5% - 2s * 36 36 22 91.0000000 6.80308 92.5% 43.8 2s * 39 33 21 90.0000000 6.80308 92.4% 41.0 2s H 71 63 87.0000000 6.88166 92.1% 42.9 2s * 72 63 20 86.0000000 6.88166 92.0% 42.7 2s H 104 89 84.0000000 13.28615 84.2% 43.3 2s * 105 86 21 83.0000000 13.28615 84.0% 43.1 2s * 108 82 20 82.0000000 13.28615 83.8% 42.2 2s 1032 502 61.84692 54 266 82.00000 32.23077 60.7% 49.6 5s * 1110 482 59 80.0000000 32.23077 59.7% 48.6 5s 4545 1341 cutoff 51 80.00000 48.96280 38.8% 30.3 10s 7197 1749 77.25000 36 236 80.00000 55.50000 30.6% 28.2 15s * 7508 1779 42 79.0000000 56.00000 29.1% 28.0 15s 11438 1921 77.50268 37 216 79.00000 61.59497 22.0% 26.0 20s 15956 1677 infeasible 36 79.00000 65.91667 16.6% 24.6 25s 20106 842 76.13333 42 217 79.00000 71.10148 10.0% 23.8 30s Explored 21460 nodes (501277 simplex iterations) in 30.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.900000000000e+01, best bound 7.900000000000e+01, gap 0.0%