Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:22:36 2013 Optimize a model with 1870 rows, 289170 columns and 578170 nonzeros Presolve time: 0.88s Presolved: 1870 rows, 289170 columns, 578170 nonzeros Variable types: 289000 continuous, 170 integer (170 binary) Root relaxation: objective 3.016345e+05, 10972 iterations, 0.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 301634.549 0 5 - 301634.549 - - 2s H 0 0 316649.00000 301634.549 4.74% - 2s 0 0 301822.136 0 4 316649.000 301822.136 4.68% - 4s 0 0 301868.582 0 3 316649.000 301868.582 4.67% - 4s 0 0 301878.371 0 4 316649.000 301878.371 4.66% - 5s 0 0 301892.216 0 3 316649.000 301892.216 4.66% - 5s 0 0 301908.481 0 3 316649.000 301908.481 4.66% - 6s 0 0 301908.894 0 3 316649.000 301908.894 4.66% - 7s 0 0 301909.217 0 3 316649.000 301909.217 4.65% - 7s 0 0 301909.260 0 3 316649.000 301909.260 4.65% - 8s 0 0 301911.114 0 3 316649.000 301911.114 4.65% - 9s 0 0 301911.758 0 3 316649.000 301911.758 4.65% - 9s 0 2 301951.805 0 3 316649.000 301951.805 4.64% - 11s H 3 3 307062.99641 302086.089 1.62% 252 14s 4 6 302469.051 3 3 307062.996 302137.073 1.60% 388 15s H 7 7 304541.91262 302137.073 0.79% 259 15s H 18 15 303755.00000 302137.073 0.53% 172 17s * 22 14 18 303063.00000 302137.073 0.31% 148 18s H 27 12 302907.00000 302564.391 0.11% 154 19s 31 12 302616.488 6 2 302907.000 302585.000 0.11% 156 20s H 36 8 302734.00000 302585.000 0.05% 144 20s * 43 8 14 302700.00000 302585.000 0.04% 124 21s Cutting planes: Implied bound: 177 Flow cover: 5 Explored 53 nodes (17947 simplex iterations) in 22.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.027000000000e+05, best bound 3.026867600000e+05, gap 0.0044%