Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:09:54 2013 Optimize a model with 5070 rows, 15260 columns and 40505 nonzeros Presolve removed 10 rows and 15 columns Presolve time: 0.30s Presolved: 5060 rows, 15245 columns, 30490 nonzeros Variable types: 10250 continuous, 4995 integer (4995 binary) Root relaxation: objective 1.291780e+04, 57 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12917.7960 0 1 - 12917.7960 - - 0s 0 0 12917.8886 0 2 - 12917.8886 - - 0s 0 0 12917.8886 0 2 - 12917.8886 - - 0s 0 2 12917.9374 0 2 - 12917.9374 - - 1s 534 105 12958.1595 534 2 - 12958.1595 - 1.3 5s * 1078 643 1076 13149.328094 12965.5788 1.40% 1.9 8s * 1080 638 1075 13149.299209 12965.5788 1.40% 1.9 8s * 1081 637 1074 13149.270005 12965.5788 1.40% 1.9 8s H 1082 636 13149.215914 12965.5788 1.40% 1.9 8s * 1086 635 1073 13149.210640 12965.5788 1.40% 1.8 8s * 1090 634 1072 13149.180441 12965.5788 1.40% 1.8 8s * 1091 0 98 12965.578780 12965.5788 0.0% 1.8 8s Cutting planes: Gomory: 1 Flow cover: 1 Explored 1092 nodes (3084 simplex iterations) in 8.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.296557878044e+04, best bound 1.296557878044e+04, gap 0.0%