Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:16:16 2013 Optimize a model with 583 rows, 28143 columns and 56233 nonzeros Presolve time: 0.04s Presolved: 583 rows, 28143 columns, 56233 nonzeros Variable types: 28090 continuous, 53 integer (53 binary) Root relaxation: objective 5.398103e+04, 1006 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53981.0333 0 10 - 53981.0333 - - 0s H 0 0 57051.000000 53981.0333 5.38% - 0s H 0 0 54888.000000 53981.0333 1.65% - 0s 0 0 54515.5773 0 7 54888.0000 54515.5773 0.68% - 0s 0 0 54543.8684 0 7 54888.0000 54543.8684 0.63% - 0s 0 0 54551.2409 0 4 54888.0000 54551.2409 0.61% - 0s 0 0 54551.2409 0 4 54888.0000 54551.2409 0.61% - 0s 0 0 54557.4194 0 4 54888.0000 54557.4194 0.60% - 0s H 0 0 54825.000000 54557.4194 0.49% - 0s 0 0 54557.4401 0 4 54825.0000 54557.4401 0.49% - 0s 0 0 54557.4401 0 4 54825.0000 54557.4401 0.49% - 0s 0 0 54557.7411 0 4 54825.0000 54557.7411 0.49% - 0s H 0 0 54712.000000 54557.7411 0.28% - 0s 0 0 54557.7411 0 8 54712.0000 54557.7411 0.28% - 0s 0 0 54557.7411 0 5 54712.0000 54557.7411 0.28% - 0s 0 0 54557.7411 0 7 54712.0000 54557.7411 0.28% - 0s 0 0 54566.9576 0 3 54712.0000 54566.9576 0.27% - 0s 0 0 54568.9791 0 3 54712.0000 54568.9791 0.26% - 0s 0 0 54568.9922 0 3 54712.0000 54568.9922 0.26% - 0s 0 0 54569.5802 0 3 54712.0000 54569.5802 0.26% - 0s 0 0 54569.5802 0 3 54712.0000 54569.5802 0.26% - 0s 0 0 54570.0346 0 2 54712.0000 54570.0346 0.26% - 0s 0 2 54572.1946 0 2 54712.0000 54572.1946 0.26% - 0s * 4 3 3 54595.000000 54591.6364 0.01% 25.2 1s Cutting planes: Implied bound: 72 Flow cover: 2 Explored 5 nodes (2376 simplex iterations) in 1.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.459500000000e+04, best bound 5.459163636364e+04, gap 0.0062%