Gurobi 5.6.3 (linux64) logging started Wed Oct 8 00:31:06 2014 Optimize a model with 27556 rows, 27391 columns and 109065 nonzeros Presolve time: 0.66s Presolved: 27556 rows, 27391 columns, 109065 nonzeros Variable types: 1 continuous, 27390 integer (27390 binary) Found heuristic solution: objective 1.0079862 Found heuristic solution: objective 0.9905223 Found heuristic solution: objective 0.9449476 Root relaxation: objective 9.241204e-02, 8477 iterations, 2.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09241 0 1373 0.94495 0.09241 90.2% - 3s H 0 0 0.3181090 0.09241 70.9% - 3s H 0 0 0.2955240 0.09241 68.7% - 3s 0 0 0.09297 0 1378 0.29552 0.09297 68.5% - 5s 0 0 0.09297 0 1396 0.29552 0.09297 68.5% - 7s H 0 0 0.2748173 0.09297 66.2% - 7s H 0 0 0.2517966 0.09297 63.1% - 7s 0 0 0.09425 0 1366 0.25180 0.09425 62.6% - 8s H 0 0 0.2410253 0.09425 60.9% - 8s H 0 0 0.2376522 0.09425 60.3% - 8s 0 2 0.09446 0 1365 0.23765 0.09446 60.3% - 35s H 1 2 0.1612943 0.09446 41.4% 1293 37s 9 8 0.10159 0 1092 0.16129 0.10159 37.0% 144 40s H 67 54 0.1594231 0.10298 35.4% 404 43s H 80 67 0.1586982 0.10298 35.1% 391 43s H 94 80 0.1582850 0.10298 34.9% 351 43s * 114 95 65 0.1565665 0.10298 34.2% 303 44s * 115 92 65 0.1559304 0.10298 34.0% 300 44s H 121 87 0.1551523 0.10300 33.6% 299 44s H 148 114 0.1526074 0.10300 32.5% 289 45s H 154 114 0.1498496 0.10300 31.3% 283 45s H 175 129 0.1492178 0.10379 30.4% 277 45s * 183 133 30 0.1488535 0.10379 30.3% 269 45s H 224 92 0.1456813 0.10939 24.9% 288 46s * 225 93 19 0.1451180 0.10940 24.6% 290 47s Cutting planes: Gomory: 9 MIR: 18 Zero half: 3 Explored 319 nodes (106598 simplex iterations) in 47.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.451180011680e-01, best bound 1.451180011680e-01, gap 0.0%