Gurobi 5.6.3 (linux64) logging started Wed Oct 8 05:35:25 2014 Optimize a model with 55225 rows, 54991 columns and 219258 nonzeros Presolve time: 1.81s Presolved: 55225 rows, 54991 columns, 219258 nonzeros Variable types: 1 continuous, 54990 integer (54990 binary) Found heuristic solution: objective 0.7748526 Found heuristic solution: objective 0.7670930 Found heuristic solution: objective 0.7631263 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 11534 7.9776362e-02 1.376057e+03 0.000000e+00 5s 11981 7.9616104e-02 0.000000e+00 0.000000e+00 6s Root relaxation: objective 7.961610e-02, 11981 iterations, 6.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.07962 0 2337 0.76313 0.07962 89.6% - 9s H 0 0 0.1294106 0.07962 38.5% - 17s 0 0 0.08564 0 1448 0.12941 0.08564 33.8% - 23s 0 0 0.08564 0 1503 0.12941 0.08564 33.8% - 24s 0 0 0.08949 0 1438 0.12941 0.08949 30.8% - 25s 0 0 0.09399 0 1372 0.12941 0.09399 27.4% - 25s 0 0 0.09420 0 1416 0.12941 0.09420 27.2% - 25s 0 0 0.09444 0 1424 0.12941 0.09444 27.0% - 25s 0 0 0.09451 0 1487 0.12941 0.09451 27.0% - 25s 0 0 0.09451 0 1344 0.12941 0.09451 27.0% - 26s H 0 0 0.1292272 0.09451 26.9% - 26s 0 2 0.09492 0 1286 0.12923 0.09492 26.5% - 26s H 27 27 0.1278779 0.09595 25.0% 412 27s * 58 44 16 0.1273524 0.09595 24.7% 351 28s * 59 43 16 0.1264058 0.09595 24.1% 345 28s * 74 52 11 0.1261484 0.09652 23.5% 338 28s * 75 51 11 0.1254729 0.09652 23.1% 334 28s 134 48 0.11186 8 841 0.12547 0.09792 22.0% 276 30s Cutting planes: Gomory: 4 MIR: 64 Zero half: 6 Explored 379 nodes (95401 simplex iterations) in 32.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.254728947980e-01, best bound 1.254728947980e-01, gap 0.0%