Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:26:42 2013 Optimize a model with 1980 rows, 324180 columns and 648180 nonzeros Presolve time: 0.86s Presolved: 1980 rows, 324180 columns, 648180 nonzeros Variable types: 324000 continuous, 180 integer (180 binary) Root relaxation: objective 3.044907e+05, 10158 iterations, 1.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 304490.707 0 7 - 304490.707 - - 2s H 0 0 329521.00000 304490.707 7.60% - 3s H 0 0 306703.00000 304490.707 0.72% - 4s 0 0 304996.746 0 7 306703.000 304996.746 0.56% - 5s 0 0 304996.746 0 7 306703.000 304996.746 0.56% - 6s 0 0 304997.191 0 7 306703.000 304997.191 0.56% - 7s 0 0 305041.971 0 5 306703.000 305041.971 0.54% - 8s 0 0 305056.350 0 5 306703.000 305056.350 0.54% - 8s 0 0 305088.532 0 5 306703.000 305088.532 0.53% - 8s 0 0 305102.354 0 7 306703.000 305102.354 0.52% - 9s 0 0 305105.233 0 5 306703.000 305105.233 0.52% - 9s 0 0 305108.153 0 5 306703.000 305108.153 0.52% - 9s 0 0 305110.046 0 5 306703.000 305110.046 0.52% - 10s 0 0 305112.655 0 5 306703.000 305112.655 0.52% - 10s 0 0 305114.998 0 5 306703.000 305114.998 0.52% - 10s 0 0 305114.998 0 5 306703.000 305114.998 0.52% - 10s 0 0 305114.998 0 5 306703.000 305114.998 0.52% - 11s 0 0 305114.998 0 5 306703.000 305114.998 0.52% - 11s 0 2 305115.418 0 5 306703.000 305115.418 0.52% - 12s 10 12 305384.301 9 2 306703.000 305299.190 0.46% 177 15s H 12 9 305426.00000 305299.190 0.04% 149 15s * 14 6 13 305412.00000 305299.190 0.04% 131 15s Cutting planes: Implied bound: 166 Flow cover: 9 Explored 20 nodes (19719 simplex iterations) in 15.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.054120000000e+05, best bound 3.053973250000e+05, gap 0.0048%