Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:17 2013 Optimize a model with 516 rows, 1013 columns and 3525 nonzeros Presolve removed 16 rows and 172 columns Presolve time: 0.08s Presolved: 500 rows, 841 columns, 2522 nonzeros Variable types: 497 continuous, 344 integer (344 binary) Found heuristic solution: objective 2148.8203230 Root relaxation: objective 2.144967e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2144.96673 0 2 2148.82032 2144.96673 0.18% - 0s 0 0 2145.17496 0 2 2148.82032 2145.17496 0.17% - 0s 0 0 2145.38150 0 2 2148.82032 2145.38150 0.16% - 0s 0 0 2145.58634 0 2 2148.82032 2145.58634 0.15% - 0s 0 0 2145.78950 0 2 2148.82032 2145.78950 0.14% - 0s 0 0 2145.99099 0 2 2148.82032 2145.99099 0.13% - 0s 0 0 2146.19083 0 2 2148.82032 2146.19083 0.12% - 0s 0 0 2146.38902 0 2 2148.82032 2146.38902 0.11% - 0s 0 0 2146.58557 0 2 2148.82032 2146.58557 0.10% - 0s 0 0 2146.78050 0 2 2148.82032 2146.78050 0.09% - 0s 0 0 2146.97382 0 2 2148.82032 2146.97382 0.09% - 0s 0 0 2147.16553 0 2 2148.82032 2147.16553 0.08% - 0s 0 0 2147.35564 0 2 2148.82032 2147.35564 0.07% - 0s 0 0 2147.54417 0 2 2148.82032 2147.54417 0.06% - 0s 0 0 2147.73113 0 2 2148.82032 2147.73113 0.05% - 0s 0 0 2147.91652 0 2 2148.82032 2147.91652 0.04% - 0s 0 0 2148.10036 0 2 2148.82032 2148.10036 0.03% - 0s 0 0 2148.28265 0 2 2148.82032 2148.28265 0.03% - 0s 0 0 2148.46340 0 2 2148.82032 2148.46340 0.02% - 0s 0 0 2148.64262 0 2 2148.82032 2148.64262 0.01% - 0s Explored 0 nodes (98 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.148820323028e+03, best bound 2.148642619995e+03, gap 0.0083%