Gurobi 5.6.3 (linux64) logging started Wed Oct 8 00:40:08 2014 Optimize a model with 28561 rows, 28393 columns and 113064 nonzeros Presolve time: 0.78s Presolved: 28561 rows, 28393 columns, 113064 nonzeros Variable types: 1 continuous, 28392 integer (28392 binary) Found heuristic solution: objective 1.1255922 Found heuristic solution: objective 0.9531615 Found heuristic solution: objective 0.9266357 Root relaxation: objective 9.661038e-02, 8284 iterations, 1.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09661 0 1501 0.92664 0.09661 89.6% - 3s H 0 0 0.2826218 0.09661 65.8% - 3s H 0 0 0.2638410 0.09661 63.4% - 3s 0 0 0.09804 0 1423 0.26384 0.09804 62.8% - 5s 0 0 0.09804 0 1503 0.26384 0.09804 62.8% - 7s H 0 0 0.2565402 0.09804 61.8% - 7s H 0 0 0.2124434 0.09804 53.9% - 7s 0 0 0.09804 0 1415 0.21244 0.09804 53.9% - 8s 0 2 0.09869 0 1415 0.21244 0.09869 53.5% - 33s H 1 2 0.1622355 0.09869 39.2% 1139 35s 32 25 0.12593 25 801 0.16224 0.11602 28.5% 716 40s H 120 82 0.1588476 0.11898 25.1% 353 41s * 139 79 25 0.1587986 0.12012 24.4% 327 41s H 178 71 0.1558481 0.12433 20.2% 310 42s * 182 72 31 0.1542403 0.12433 19.4% 306 42s * 188 71 33 0.1538270 0.12433 19.2% 296 42s * 189 65 33 0.1537415 0.12433 19.1% 294 42s * 235 72 25 0.1530820 0.12767 16.6% 278 43s * 240 69 22 0.1517443 0.12767 15.9% 273 43s * 242 69 23 0.1513736 0.12767 15.7% 271 43s Cutting planes: Gomory: 8 MIR: 63 Zero half: 4 Explored 312 nodes (94461 simplex iterations) in 43.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.513735881173e-01, best bound 1.513735881173e-01, gap 0.0%