Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:12:24 2013 Optimize a model with 1320 rows, 144120 columns and 288120 nonzeros Presolve time: 0.30s Presolved: 1320 rows, 144120 columns, 288120 nonzeros Variable types: 144000 continuous, 120 integer (120 binary) Root relaxation: objective 1.764841e+05, 4246 iterations, 0.23 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 176484.092 0 7 - 176484.092 - - 0s H 0 0 187976.00000 176484.092 6.11% - 0s 0 0 176741.978 0 3 187976.000 176741.978 5.98% - 1s 0 0 176783.895 0 5 187976.000 176783.895 5.95% - 1s 0 0 176785.819 0 4 187976.000 176785.819 5.95% - 2s H 0 0 186965.53774 176785.819 5.44% - 2s H 0 0 182806.00000 176785.819 3.29% - 2s 0 0 176786.056 0 4 182806.000 176786.056 3.29% - 2s H 0 0 182805.00000 176786.056 3.29% - 2s 0 0 176786.056 0 4 182805.000 176786.056 3.29% - 2s 0 0 176786.092 0 5 182805.000 176786.092 3.29% - 3s H 0 0 180691.00000 176786.092 2.16% - 3s 0 2 176801.927 0 5 180691.000 176801.927 2.15% - 3s H 5 5 180018.62921 176984.698 1.69% 200 4s 7 9 177249.670 4 3 180018.629 176984.698 1.69% 247 5s H 25 18 178381.00000 176984.698 0.78% 109 6s H 28 16 178168.00000 176984.698 0.66% 100 7s * 32 16 27 178061.00000 176984.698 0.60% 92.5 7s H 41 19 177699.00000 176993.740 0.40% 97.8 7s H 44 20 177673.00000 176993.740 0.38% 99.2 8s * 46 19 12 177644.00000 176993.740 0.37% 100 8s H 67 18 177582.00000 177083.371 0.28% 107 9s 68 21 177193.506 4 1 177582.000 177083.371 0.28% 111 10s * 72 16 6 177416.00000 177083.371 0.19% 111 10s Cutting planes: Implied bound: 167 Flow cover: 3 Explored 102 nodes (15454 simplex iterations) in 11.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.774160000000e+05, best bound 1.774160000000e+05, gap 0.0%