Gurobi 5.6.3 (linux64) logging started Wed Oct 8 03:20:38 2014 Optimize a model with 44521 rows, 44311 columns and 176610 nonzeros Presolve time: 1.31s Presolved: 44521 rows, 44311 columns, 176610 nonzeros Variable types: 1 continuous, 44310 integer (44310 binary) Found heuristic solution: objective 0.9334724 Found heuristic solution: objective 0.9267543 Found heuristic solution: objective 0.9044572 Root relaxation: objective 8.690135e-02, 9728 iterations, 4.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.08690 0 1950 0.90446 0.08690 90.4% - 7s H 0 0 0.1514180 0.08690 42.6% - 13s 0 0 0.09039 0 1569 0.15142 0.09039 40.3% - 19s H 0 0 0.1439610 0.09039 37.2% - 22s 0 0 0.09507 0 1230 0.14396 0.09507 34.0% - 24s 0 0 0.09514 0 1261 0.14396 0.09514 33.9% - 24s 0 0 0.09973 0 1231 0.14396 0.09973 30.7% - 24s 0 0 0.10033 0 1236 0.14396 0.10033 30.3% - 24s 0 0 0.10088 0 1214 0.14396 0.10088 29.9% - 24s 0 0 0.10106 0 1213 0.14396 0.10106 29.8% - 24s 0 0 0.10111 0 1289 0.14396 0.10111 29.8% - 24s 0 0 0.10111 0 1119 0.14396 0.10111 29.8% - 25s H 0 0 0.1428491 0.10111 29.2% - 25s 0 2 0.10187 0 1044 0.14285 0.10187 28.7% - 25s H 54 53 0.1403913 0.10189 27.4% 292 27s * 68 57 6 0.1402366 0.10190 27.3% 291 27s * 72 58 9 0.1381778 0.10190 26.3% 275 27s H 81 55 0.1377363 0.10191 26.0% 266 27s Cutting planes: Gomory: 5 MIR: 69 Zero half: 4 Mod-K: 1 Explored 139 nodes (73267 simplex iterations) in 28.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.377362966951e-01, best bound 1.377362966951e-01, gap 0.0%