Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:46:07 2013 Optimize a model with 3200 rows, 151200 columns and 753100 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 1.20s Presolved: 3100 rows, 151100 columns, 703000 nonzeros Variable types: 150200 continuous, 900 integer (900 binary) Root relaxation: objective 8.654105e+05, 7126 iterations, 1.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 6 - 865410.545 - - 2s 0 0 865426.640 0 6 - 865426.640 - - 4s 0 0 865428.833 0 8 - 865428.833 - - 5s 0 0 865433.813 0 10 - 865433.813 - - 5s 0 0 865435.188 0 10 - 865435.188 - - 6s 0 0 865435.538 0 10 - 865435.538 - - 7s 0 0 865435.793 0 10 - 865435.793 - - 7s 0 0 865436.952 0 9 - 865436.952 - - 8s 0 0 865437.112 0 9 - 865437.112 - - 9s 0 0 865437.112 0 9 - 865437.112 - - 9s 0 0 865437.112 0 9 - 865437.112 - - 10s 0 0 865437.112 0 9 - 865437.112 - - 11s 0 0 865438.007 0 9 - 865438.007 - - 12s 0 0 865438.007 0 9 - 865438.007 - - 13s 0 0 865438.099 0 9 - 865438.099 - - 14s 0 0 865438.099 0 9 - 865438.099 - - 15s 0 0 865438.169 0 9 - 865438.169 - - 16s 0 0 865438.559 0 9 - 865438.559 - - 18s 0 0 865438.559 0 8 - 865438.559 - - 18s 0 0 865438.559 0 9 - 865438.559 - - 19s 0 0 865438.559 0 9 - 865438.559 - - 20s 0 0 865438.559 0 9 - 865438.559 - - 21s 0 0 865438.559 0 9 - 865438.559 - - 22s 0 0 865438.568 0 9 - 865438.568 - - 23s 0 0 865438.568 0 9 - 865438.568 - - 24s 0 0 865438.568 0 9 - 865438.568 - - 25s 0 0 865438.568 0 9 - 865438.568 - - 28s 0 2 865442.028 0 9 - 865442.028 - - 43s 4 6 865979.313 4 6 - 865979.313 - 148 45s 11 13 867115.831 10 3 - 866149.190 - 173 50s 29 31 867845.763 27 3 - 866149.190 - 80.1 55s 51 53 867877.825 48 1 - 866149.190 - 47.1 60s * 64 26 58 867922.60988 866149.190 0.20% 38.8 60s H 94 14 866916.31764 866154.143 0.09% 48.0 64s 112 17 866774.553 4 6 866916.318 866239.143 0.08% 50.9 65s 167 35 866850.592 45 3 866916.318 866374.151 0.06% 44.0 70s * 185 28 63 866850.81839 866374.151 0.05% 40.1 70s Cutting planes: Flow cover: 14 Explored 211 nodes (20870 simplex iterations) in 73.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668508183896e+05, best bound 8.667745533645e+05, gap 0.0088%