Gurobi 5.6.3 (linux64) logging started Wed Oct 8 01:20:19 2014 Optimize a model with 32761 rows, 32581 columns and 129780 nonzeros Presolve time: 0.86s Presolved: 32761 rows, 32581 columns, 129780 nonzeros Variable types: 1 continuous, 32580 integer (32580 binary) Found heuristic solution: objective 0.8574069 Found heuristic solution: objective 0.8541787 Found heuristic solution: objective 0.8099983 Root relaxation: objective 9.269452e-02, 8743 iterations, 2.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09269 0 1642 0.81000 0.09269 88.6% - 4s H 0 0 0.2951102 0.09269 68.6% - 5s H 0 0 0.2587924 0.09269 64.2% - 5s 0 0 0.09281 0 1656 0.25879 0.09281 64.1% - 7s 0 0 0.09281 0 1651 0.25879 0.09281 64.1% - 9s H 0 0 0.2573692 0.09281 63.9% - 9s H 0 0 0.2419848 0.09281 61.6% - 9s 0 0 0.09307 0 1661 0.24198 0.09307 61.5% - 10s 0 0 0.09314 0 1640 0.24198 0.09314 61.5% - 10s 0 0 0.09314 0 1639 0.24198 0.09314 61.5% - 10s 0 0 0.09314 0 1627 0.24198 0.09314 61.5% - 11s 0 0 0.09314 0 1600 0.24198 0.09314 61.5% - 12s H 0 0 0.1604544 0.09314 42.0% - 14s 0 2 0.09471 0 1449 0.16045 0.09471 41.0% - 15s * 145 127 50 0.1599328 0.09672 39.5% 256 19s 176 146 0.11004 13 1019 0.15993 0.09761 39.0% 241 20s H 275 229 0.1592635 0.09762 38.7% 229 22s H 282 234 0.1584032 0.09762 38.4% 229 22s H 303 249 0.1582723 0.09762 38.3% 222 22s H 352 290 0.1557930 0.09796 37.1% 227 24s * 361 293 28 0.1514395 0.09796 35.3% 225 24s * 366 290 4 0.1512325 0.09873 34.7% 225 24s * 388 306 23 0.1509608 0.09880 34.6% 219 24s * 389 291 23 0.1488897 0.09880 33.6% 218 24s 394 286 infeasible 4 0.14889 0.09902 33.5% 219 25s H 406 270 0.1459367 0.10221 30.0% 233 26s * 410 270 8 0.1448068 0.10250 29.2% 235 26s 510 170 infeasible 26 0.14481 0.11035 23.8% 245 30s Cutting planes: Gomory: 4 Mod-K: 2 Explored 681 nodes (160820 simplex iterations) in 31.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.448067811356e-01, best bound 1.448067811356e-01, gap 0.0%