Gurobi 5.6.3 (linux64) logging started Tue Oct 7 23:38:23 2014 Optimize a model with 20736 rows, 20593 columns and 81939 nonzeros Presolve time: 0.43s Presolved: 20736 rows, 20593 columns, 81939 nonzeros Variable types: 1 continuous, 20592 integer (20592 binary) Found heuristic solution: objective 1.3652899 Found heuristic solution: objective 1.2385691 Found heuristic solution: objective 0.7976667 Root relaxation: objective 1.038035e-01, 6415 iterations, 1.33 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.10380 0 1346 0.79767 0.10380 87.0% - 2s H 0 0 0.2952911 0.10380 64.8% - 2s H 0 0 0.2524026 0.10380 58.9% - 2s 0 0 0.10442 0 1257 0.25240 0.10442 58.6% - 3s 0 0 0.10442 0 1258 0.25240 0.10442 58.6% - 4s 0 0 0.10485 0 1235 0.25240 0.10485 58.5% - 4s 0 0 0.10505 0 1268 0.25240 0.10505 58.4% - 5s H 0 0 0.2431676 0.10505 56.8% - 5s 0 0 0.10515 0 1332 0.24317 0.10515 56.8% - 5s H 0 0 0.2259668 0.10515 53.5% - 5s H 0 0 0.2207427 0.10515 52.4% - 5s 0 0 0.10519 0 1326 0.22074 0.10519 52.3% - 5s 0 0 0.10519 0 1288 0.22074 0.10519 52.3% - 5s H 0 0 0.2170022 0.10519 51.5% - 6s 0 2 0.10519 0 1290 0.21700 0.10519 51.5% - 6s 24 26 0.11483 12 1080 0.21700 0.10629 51.0% 786 10s H 27 27 0.1859319 0.10629 42.8% 772 10s H 54 52 0.1810429 0.10629 41.3% 521 11s H 81 65 0.1803848 0.10629 41.1% 414 11s H 136 108 0.1788240 0.10724 40.0% 341 13s H 163 127 0.1776458 0.10724 39.6% 314 13s H 190 154 0.1767749 0.10724 39.3% 306 14s H 217 173 0.1756703 0.10724 39.0% 282 14s 237 185 0.13249 11 524 0.17567 0.10852 38.2% 282 15s * 264 200 23 0.1720970 0.10852 36.9% 268 15s H 271 195 0.1673070 0.10892 34.9% 267 15s H 275 197 0.1672116 0.10892 34.9% 265 15s * 282 193 13 0.1663730 0.10892 34.5% 259 15s * 283 187 13 0.1630242 0.10892 33.2% 258 15s Cutting planes: Gomory: 5 Mod-K: 2 Explored 471 nodes (131415 simplex iterations) in 19.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.630242019372e-01, best bound 1.630242019372e-01, gap 0.0%