Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:18:23 2013 Optimize a model with 1760 rows, 256160 columns and 512160 nonzeros Presolve time: 0.68s Presolved: 1760 rows, 256160 columns, 512160 nonzeros Variable types: 256000 continuous, 160 integer (160 binary) Root relaxation: objective 2.608133e+05, 9205 iterations, 0.88 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 260813.303 0 12 - 260813.303 - - 1s H 0 0 281212.00000 260813.303 7.25% - 2s 0 0 261059.416 0 6 281212.000 261059.416 7.17% - 3s H 0 0 281188.00000 261059.416 7.16% - 4s 0 0 261076.950 0 5 281188.000 261076.950 7.15% - 4s H 0 0 279783.98584 261076.950 6.69% - 4s H 0 0 278492.00000 261076.950 6.25% - 4s 0 0 261077.277 0 5 278492.000 261077.277 6.25% - 5s H 0 0 276803.80832 261077.277 5.68% - 5s H 0 0 275457.00000 261077.277 5.22% - 5s 0 0 261081.808 0 5 275457.000 261081.808 5.22% - 5s 0 0 261085.214 0 6 275457.000 261085.214 5.22% - 6s 0 0 261085.524 0 7 275457.000 261085.524 5.22% - 6s H 0 0 275404.00000 261085.524 5.20% - 7s 0 0 261090.043 0 5 275404.000 261090.043 5.20% - 7s 0 0 261090.315 0 7 275404.000 261090.315 5.20% - 8s H 0 0 275309.00000 261090.315 5.16% - 8s 0 0 261090.833 0 5 275309.000 261090.833 5.16% - 9s H 0 0 275171.00000 261090.833 5.12% - 9s 0 0 261090.902 0 5 275171.000 261090.902 5.12% - 9s 0 0 261091.101 0 5 275171.000 261091.101 5.12% - 10s 0 2 261108.981 0 5 275171.000 261108.981 5.11% - 12s H 1 1 268647.80280 261108.981 2.81% 0.0 12s H 3 3 267688.02855 261158.036 2.44% 126 13s H 4 4 264117.88281 261188.569 1.11% 147 13s H 5 5 261781.88415 261188.569 0.23% 123 14s 12 11 261220.732 11 2 261781.884 261188.569 0.23% 76.8 15s H 20 13 261593.00000 261188.569 0.15% 53.2 15s H 23 13 261573.00000 261188.569 0.15% 47.9 15s H 24 14 261472.00000 261188.569 0.11% 46.0 16s * 28 13 24 261394.00000 261188.569 0.08% 41.3 16s H 35 17 261349.00000 261199.650 0.06% 40.7 16s * 36 16 10 261320.00000 261199.650 0.05% 40.3 16s * 57 9 14 261303.00000 261232.983 0.03% 51.5 18s * 64 6 10 261295.00000 261245.162 0.02% 49.2 18s Cutting planes: Implied bound: 195 Flow cover: 10 Explored 76 nodes (13356 simplex iterations) in 19.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.612950000000e+05, best bound 2.612722195122e+05, gap 0.0087%