Gurobi 5.0.1 (linux64) logging started Thu Nov 29 05:44:27 2012 Optimize a model with 17422 rows, 17161 columns and 102440 nonzeros Presolve removed 130 rows and 1 columns Presolve time: 0.24s Presolved: 17292 rows, 17160 columns, 101920 nonzeros Variable types: 130 continuous, 17030 integer (17030 binary) Found heuristic solution: objective 22566.000000 Found heuristic solution: objective 22501.000000 Root relaxation: objective 2.276718e+03, 814 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2276.71795 0 54 22501.0000 2276.71795 89.9% - 0s 0 0 2298.09328 0 67 22501.0000 2298.09328 89.8% - 1s 0 0 2298.09328 0 67 22501.0000 2298.09328 89.8% - 1s 0 0 2298.09328 0 62 22501.0000 2298.09328 89.8% - 3s H 0 0 2346.0000000 2298.09328 2.04% - 4s 0 0 2298.09328 0 50 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 109 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 107 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 107 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 62 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 59 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 59 2346.00000 2298.09328 2.04% - 4s 0 0 2298.09328 0 58 2346.00000 2298.09328 2.04% - 5s 0 2 2298.19231 0 58 2346.00000 2298.19231 2.04% - 5s H 59 15 2329.0000000 2302.00000 1.16% 26.5 5s H 225 26 2313.0000000 2305.50000 0.32% 21.0 6s H 281 15 2307.0000000 2306.00000 0.04% 20.1 6s 1221 21 cutoff 24 2307.00000 2306.00000 0.04% 30.0 10s Cutting planes: Gomory: 1 MIR: 4 Explored 1665 nodes (54877 simplex iterations) in 11.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.307000000000e+03, best bound 2.307000000000e+03, gap 0.0%