Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:41:14 2014 Optimize a model with 9046 rows, 4557 columns and 22445 nonzeros Presolve removed 67 rows and 0 columns Presolve time: 0.13s Presolved: 8979 rows, 4557 columns, 22378 nonzeros Variable types: 1 continuous, 4556 integer (4556 binary) Found heuristic solution: objective 0.9354480 Found heuristic solution: objective 0.8449033 Found heuristic solution: objective 0.7521258 Root relaxation: objective 6.025134e-03, 5476 iterations, 0.33 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00603 0 3510 0.75213 0.00603 99.2% - 0s H 0 0 0.5125393 0.00603 98.8% - 1s 0 0 0.00880 0 2062 0.51254 0.00880 98.3% - 2s 0 0 0.01703 0 1856 0.51254 0.01703 96.7% - 3s H 0 0 0.4722019 0.01703 96.4% - 3s H 0 0 0.4563691 0.01703 96.3% - 3s 0 0 0.01961 0 1528 0.45637 0.01961 95.7% - 3s H 0 0 0.4522863 0.01961 95.7% - 3s 0 0 0.02825 0 1517 0.45229 0.02825 93.8% - 3s H 0 0 0.4182702 0.02825 93.2% - 3s 0 0 0.03028 0 1146 0.41827 0.03028 92.8% - 4s H 0 0 0.4132419 0.03028 92.7% - 4s H 0 0 0.4092716 0.03028 92.6% - 4s 0 1 0.03028 0 1146 0.40927 0.03028 92.6% - 9s 2 2 0.03028 0 2062 0.40927 0.03028 92.6% 880 12s H 3 2 0.3913665 0.05848 85.1% 587 12s H 5 3 0.3904156 0.06455 83.5% 352 12s H 6 4 0.3885443 0.06884 82.3% 293 13s H 14 8 0.3621911 0.08291 77.1% 126 14s 15 9 0.08291 0 676 0.36219 0.08291 77.1% 117 15s H 15 8 0.3463894 0.09081 73.8% 117 15s H 15 8 0.3412590 0.09081 73.4% 117 15s H 18 9 0.3326278 0.09359 71.9% 808 15s H 19 8 0.3112776 0.09369 69.9% 804 22s H 21 9 0.3106857 0.15884 48.9% 727 22s H 21 9 0.2595257 0.15884 38.8% 727 22s H 25 10 0.2371886 0.17212 27.4% 838 26s H 27 11 0.2269218 0.22489 0.89% 776 26s Cutting planes: Gomory: 1 MIR: 1 Explored 29 nodes (54720 simplex iterations) in 26.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.269217801520e-01, best bound 2.269217801520e-01, gap 0.0%