Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:28 2013 Optimize a model with 1016 rows, 2013 columns and 7025 nonzeros Presolve removed 13 rows and 51 columns Presolve time: 0.06s Presolved: 1003 rows, 1962 columns, 5885 nonzeros Variable types: 1000 continuous, 962 integer (962 binary) Found heuristic solution: objective 3279.1930789 Root relaxation: objective 3.274796e+03, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3274.79607 0 2 3279.19308 3274.79607 0.13% - 0s 0 0 3275.07476 0 2 3279.19308 3275.07476 0.13% - 0s 0 0 3275.35071 0 2 3279.19308 3275.35071 0.12% - 0s 0 0 3275.62401 0 2 3279.19308 3275.62401 0.11% - 0s 0 0 3275.89472 0 2 3279.19308 3275.89472 0.10% - 0s 0 0 3276.16291 0 2 3279.19308 3276.16291 0.09% - 0s 0 0 3276.42864 0 2 3279.19308 3276.42864 0.08% - 0s 0 0 3276.69198 0 2 3279.19308 3276.69198 0.08% - 0s 0 0 3276.95299 0 2 3279.19308 3276.95299 0.07% - 0s 0 0 3277.21172 0 2 3279.19308 3277.21172 0.06% - 0s 0 0 3277.46822 0 2 3279.19308 3277.46822 0.05% - 0s 0 0 3277.72254 0 2 3279.19308 3277.72254 0.04% - 0s 0 0 3277.97474 0 2 3279.19308 3277.97474 0.04% - 0s 0 0 3278.22485 0 2 3279.19308 3278.22485 0.03% - 0s 0 0 3278.47293 0 2 3279.19308 3278.47293 0.02% - 0s 0 0 3278.71901 0 2 3279.19308 3278.71901 0.01% - 0s 0 0 3278.96291 0 2 3279.19308 3278.96291 0.01% - 0s Explored 0 nodes (90 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.279193078893e+03, best bound 3.278962907174e+03, gap 0.0070%