Gurobi 5.6.3 (linux64) logging started Wed Oct 8 01:12:05 2014 Optimize a model with 32041 rows, 31863 columns and 126914 nonzeros Presolve time: 0.90s Presolved: 32041 rows, 31863 columns, 126914 nonzeros Variable types: 1 continuous, 31862 integer (31862 binary) Found heuristic solution: objective 0.9306194 Found heuristic solution: objective 0.9194206 Found heuristic solution: objective 0.8768679 Root relaxation: objective 9.335505e-02, 9178 iterations, 2.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09336 0 1772 0.87687 0.09336 89.4% - 4s H 0 0 0.2472833 0.09336 62.2% - 4s 0 0 0.09365 0 1766 0.24728 0.09365 62.1% - 7s 0 0 0.09365 0 1780 0.24728 0.09365 62.1% - 8s 0 0 0.09365 0 1776 0.24728 0.09365 62.1% - 9s H 0 0 0.2318141 0.09365 59.6% - 9s H 0 0 0.2176079 0.09365 57.0% - 9s 0 0 0.09382 0 1731 0.21761 0.09382 56.9% - 9s H 0 0 0.2030257 0.09382 53.8% - 10s 0 2 0.09383 0 1730 0.20303 0.09383 53.8% - 52s H 1 2 0.1654490 0.09383 43.3% 1076 57s 7 6 0.09857 0 1361 0.16545 0.09857 40.4% 154 60s * 77 63 45 0.1610331 0.10043 37.6% 453 64s 82 64 0.10892 15 1029 0.16103 0.10043 37.6% 447 65s H 92 72 0.1598792 0.10043 37.2% 435 65s H 119 99 0.1585569 0.10043 36.7% 402 66s H 132 112 0.1571107 0.10043 36.1% 374 66s * 134 112 41 0.1561469 0.10043 35.7% 371 66s H 146 114 0.1556064 0.10062 35.3% 361 66s H 173 130 0.1497829 0.10062 32.8% 333 66s * 175 130 33 0.1492127 0.10062 32.6% 330 66s * 176 129 33 0.1483973 0.10062 32.2% 328 66s 238 67 cutoff 34 0.14840 0.12160 18.1% 389 70s Cutting planes: Gomory: 4 MIR: 77 Zero half: 1 Mod-K: 1 Explored 306 nodes (122356 simplex iterations) in 70.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.483973281044e-01, best bound 1.483973281044e-01, gap 0.0%