Gurobi 5.0.1 (linux64) logging started Wed Nov 28 19:30:17 2012 Optimize a model with 12542 rows, 12321 columns and 73480 nonzeros Presolve removed 110 rows and 1 columns Presolve time: 0.19s Presolved: 12432 rows, 12320 columns, 73040 nonzeros Variable types: 110 continuous, 12210 integer (12210 binary) Found heuristic solution: objective 17326.000000 Found heuristic solution: objective 17274.000000 Root relaxation: objective 1.910758e+03, 568 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1910.75758 0 58 17274.0000 1910.75758 88.9% - 0s 0 0 1932.10965 0 99 17274.0000 1932.10965 88.8% - 0s 0 0 1932.10965 0 99 17274.0000 1932.10965 88.8% - 1s H 0 0 2064.0000000 1932.10965 6.39% - 2s 0 0 1932.10965 0 54 2064.00000 1932.10965 6.39% - 2s 0 0 1932.10965 0 55 2064.00000 1932.10965 6.39% - 2s 0 0 1932.10965 0 103 2064.00000 1932.10965 6.39% - 2s 0 0 1932.10965 0 106 2064.00000 1932.10965 6.39% - 3s 0 0 1932.10965 0 56 2064.00000 1932.10965 6.39% - 3s H 0 0 2037.0000000 1932.10965 5.15% - 3s 0 0 1932.10965 0 53 2037.00000 1932.10965 5.15% - 4s 0 2 1932.31818 0 53 2037.00000 1932.31818 5.14% - 4s 2 3 1932.31818 0 54 2037.00000 1932.31818 5.14% 49.5 5s H 12 9 1964.0000000 1936.00000 1.43% 206 8s 81 31 1939.69091 41 99 1964.00000 1938.62832 1.29% 62.8 10s H 107 46 1958.0000000 1939.31818 0.95% 58.3 10s 706 378 1948.00000 30 32 1958.00000 1940.00000 0.92% 27.8 15s 2923 531 infeasible 45 1958.00000 1943.75410 0.73% 22.3 20s 5471 22 1956.00000 47 32 1958.00000 1956.00000 0.10% 21.1 25s Cutting planes: Gomory: 9 MIR: 2 Zero half: 1 Explored 5539 nodes (120566 simplex iterations) in 25.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.958000000000e+03, best bound 1.958000000000e+03, gap 0.0%