Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:48:51 2014 Optimize a model with 12321 rows, 12211 columns and 48510 nonzeros Presolve time: 0.22s Presolved: 12321 rows, 12211 columns, 48510 nonzeros Variable types: 1 continuous, 12210 integer (12210 binary) Found heuristic solution: objective 1.0503764 Found heuristic solution: objective 1.0092867 Found heuristic solution: objective 0.9201223 Root relaxation: objective 1.201377e-01, 5139 iterations, 0.64 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.12014 0 985 0.92012 0.12014 86.9% - 1s H 0 0 0.5353197 0.12014 77.6% - 1s H 0 0 0.2192989 0.12014 45.2% - 1s 0 0 0.12354 0 904 0.21930 0.12354 43.7% - 2s 0 0 0.12354 0 914 0.21930 0.12354 43.7% - 2s 0 0 0.12474 0 1002 0.21930 0.12474 43.1% - 3s 0 0 0.12552 0 922 0.21930 0.12552 42.8% - 3s 0 0 0.12567 0 970 0.21930 0.12567 42.7% - 3s 0 0 0.12567 0 941 0.21930 0.12567 42.7% - 3s 0 2 0.12567 0 940 0.21930 0.12567 42.7% - 3s 41 43 0.14940 23 569 0.21930 0.12882 41.3% 371 5s H 54 54 0.2179065 0.12882 40.9% 325 5s * 65 61 37 0.2170552 0.12882 40.6% 288 5s H 81 71 0.2140984 0.12884 39.8% 270 5s * 102 92 24 0.2132260 0.12884 39.6% 247 5s * 125 103 17 0.2115544 0.12896 39.0% 235 5s H 132 101 0.2073005 0.12896 37.8% 224 5s * 135 96 23 0.2033123 0.12896 36.6% 219 5s H 139 92 0.1968373 0.12896 34.5% 213 5s H 143 96 0.1964204 0.13034 33.6% 216 5s * 145 90 5 0.1951786 0.13034 33.2% 214 5s * 149 89 5 0.1937108 0.13034 32.7% 209 5s Cutting planes: Gomory: 4 MIR: 2 Explored 239 nodes (59590 simplex iterations) in 6.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.937107957951e-01, best bound 1.937107957951e-01, gap 0.0%