Gurobi 5.0.1 (linux64) logging started Sun Dec 9 21:44:24 2012 Optimize a model with 1110 rows, 1080 columns and 3570 nonzeros Presolve removed 63 rows and 36 columns Presolve time: 0.01s Presolved: 1047 rows, 1044 columns, 3426 nonzeros Variable types: 693 continuous, 351 integer (351 binary) Root relaxation: objective 9.358995e+04, 525 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 93589.9458 0 178 - 93589.9458 - - 0s H 0 0 156163.00000 93589.9458 40.1% - 0s 0 0 115061.871 0 37 156163.000 115061.871 26.3% - 0s H 0 0 118372.00000 115061.871 2.80% - 0s 0 0 115565.736 0 22 118372.000 115565.736 2.37% - 0s 0 0 115750.925 0 4 118372.000 115750.925 2.21% - 0s 0 0 115756.020 0 6 118372.000 115756.020 2.21% - 0s 0 2 115761.779 0 6 118372.000 115761.779 2.21% - 0s H 24 22 116044.00000 115761.779 0.24% 2.0 0s * 37 20 36 115854.00000 115761.779 0.08% 2.1 0s * 54 11 15 115822.00000 115796.684 0.02% 2.2 0s Cutting planes: Gomory: 15 Cover: 1 Implied bound: 1 Flow cover: 112 Flow path: 69 Explored 66 nodes (909 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.158220000000e+05, best bound 1.158132651540e+05, gap 0.0075%