Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:03 2013 Optimize a model with 469 rows, 196 columns and 1470 nonzeros Presolve removed 134 rows and 102 columns Presolve time: 0.00s Presolved: 335 rows, 94 columns, 1071 nonzeros Variable types: 6 continuous, 88 integer (88 binary) Found heuristic solution: objective 4250.0000000 Root relaxation: objective 3.858000e+03, 7 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3858.00000 0 4 4250.00000 3858.00000 9.22% - 0s H 0 0 3877.0000000 3858.00000 0.49% - 0s 0 0 3858.96529 0 9 3877.00000 3858.96529 0.47% - 0s 0 0 3858.96529 0 5 3877.00000 3858.96529 0.47% - 0s 0 0 3861.78929 0 9 3877.00000 3861.78929 0.39% - 0s 0 0 3863.67549 0 12 3877.00000 3863.67549 0.34% - 0s 0 0 3865.00205 0 12 3877.00000 3865.00205 0.31% - 0s 0 0 3865.23580 0 12 3877.00000 3865.23580 0.30% - 0s 0 0 3865.32380 0 11 3877.00000 3865.32380 0.30% - 0s 0 0 3865.51083 0 13 3877.00000 3865.51083 0.30% - 0s H 0 0 3866.0000000 3865.51083 0.01% - 0s Cutting planes: Gomory: 1 MIR: 6 Explored 0 nodes (70 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.866000000000e+03, best bound 3.866000000000e+03, gap 0.0%