Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:47:06 2013 Optimize a model with 680 rows, 24260 columns and 248680 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.51s Presolved: 660 rows, 24240 columns, 228660 nonzeros Variable types: 24040 continuous, 200 integer (200 binary) Root relaxation: objective 4.642213e+04, 599 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46422.1265 0 9 - 46422.1265 - - 0s 0 0 46422.3679 0 9 - 46422.3679 - - 1s 0 0 46422.3679 0 9 - 46422.3679 - - 1s 0 0 46422.3679 0 9 - 46422.3679 - - 1s 0 0 46422.3679 0 9 - 46422.3679 - - 1s 0 0 46422.3679 0 9 - 46422.3679 - - 1s 0 0 46422.3679 0 9 - 46422.3679 - - 1s 0 2 46422.9929 0 9 - 46422.9929 - - 4s 37 39 46777.9747 32 1 - 46425.4968 - 7.5 5s * 38 19 33 46777.974867 46425.4968 0.75% 7.3 5s * 74 30 33 46761.269198 46433.2732 0.70% 6.7 5s * 107 39 31 46759.867359 46436.3701 0.69% 6.8 5s * 147 52 35 46756.048733 46448.9592 0.66% 6.9 5s * 169 45 15 46754.436143 46721.4687 0.07% 6.9 6s * 205 41 32 46748.830152 46721.9078 0.06% 6.4 6s * 212 42 36 46748.582778 46721.9078 0.06% 6.3 6s * 246 61 32 46748.542411 46722.5186 0.06% 5.9 6s * 247 52 32 46748.228688 46722.5186 0.05% 5.8 6s * 264 31 17 46746.152194 46724.5352 0.05% 5.6 6s Cutting planes: Flow cover: 5 Explored 288 nodes (2657 simplex iterations) in 6.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.674615219392e+04, best bound 4.674340232558e+04, gap 0.0059%