Gurobi 5.6.3 (linux64) logging started Tue Oct 7 23:08:07 2014 Optimize a model with 18496 rows, 18361 columns and 73035 nonzeros Presolve time: 0.37s Presolved: 18496 rows, 18361 columns, 73035 nonzeros Variable types: 1 continuous, 18360 integer (18360 binary) Found heuristic solution: objective 0.7957682 Found heuristic solution: objective 0.7854714 Found heuristic solution: objective 0.7502167 Root relaxation: objective 1.058625e-01, 5934 iterations, 0.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.10586 0 1158 0.75022 0.10586 85.9% - 1s H 0 0 0.2310078 0.10586 54.2% - 1s 0 0 0.10666 0 1140 0.23101 0.10666 53.8% - 3s 0 0 0.10666 0 1149 0.23101 0.10666 53.8% - 3s 0 0 0.10697 0 1127 0.23101 0.10697 53.7% - 3s 0 0 0.10743 0 1155 0.23101 0.10743 53.5% - 4s 0 0 0.10753 0 1157 0.23101 0.10753 53.5% - 4s 0 0 0.10773 0 1170 0.23101 0.10773 53.4% - 4s 0 0 0.10779 0 1130 0.23101 0.10779 53.3% - 4s 0 0 0.10781 0 1173 0.23101 0.10781 53.3% - 4s 0 0 0.10781 0 1146 0.23101 0.10781 53.3% - 5s H 0 0 0.2261885 0.10781 52.3% - 5s 0 2 0.10781 0 1146 0.22619 0.10781 52.3% - 5s H 54 53 0.1896700 0.10932 42.4% 426 8s H 63 52 0.1887966 0.10934 42.1% 435 9s H 81 69 0.1842069 0.10934 40.6% 389 9s * 89 75 18 0.1771861 0.10934 38.3% 366 9s * 90 70 18 0.1752755 0.10934 37.6% 361 9s * 93 69 3 0.1751889 0.10939 37.6% 370 9s * 95 69 4 0.1734320 0.10939 36.9% 363 9s 100 64 infeasible 4 0.17343 0.11005 36.5% 384 10s * 114 56 6 0.1719984 0.11584 32.7% 424 11s * 120 54 5 0.1715662 0.11584 32.5% 408 11s Cutting planes: Gomory: 6 MIR: 22 Explored 175 nodes (95300 simplex iterations) in 13.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.715662347226e-01, best bound 1.715662347226e-01, gap 0.0%