Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:20:39 2013 Optimize a model with 605 rows, 30305 columns and 60555 nonzeros Presolve time: 0.04s Presolved: 605 rows, 30305 columns, 60555 nonzeros Variable types: 30250 continuous, 55 integer (55 binary) Root relaxation: objective 5.343362e+04, 1088 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53433.6158 0 10 - 53433.6158 - - 0s H 0 0 54838.000000 53433.6158 2.56% - 0s H 0 0 54443.000000 53433.6158 1.85% - 0s 0 0 53961.3490 0 7 54443.0000 53961.3490 0.88% - 0s 0 0 53978.1396 0 9 54443.0000 53978.1396 0.85% - 0s 0 0 53983.9392 0 5 54443.0000 53983.9392 0.84% - 0s 0 0 53985.5819 0 6 54443.0000 53985.5819 0.84% - 0s 0 0 53987.3679 0 6 54443.0000 53987.3679 0.84% - 0s H 0 0 54094.000000 53987.3679 0.20% - 0s 0 0 53987.3679 0 6 54094.0000 53987.3679 0.20% - 0s 0 0 54048.3635 0 3 54094.0000 54048.3635 0.08% - 0s 0 0 54061.6239 0 6 54094.0000 54061.6239 0.06% - 0s 0 0 54068.0333 0 5 54094.0000 54068.0333 0.05% - 0s 0 0 54072.8605 0 6 54094.0000 54072.8605 0.04% - 0s 0 0 54075.1029 0 2 54094.0000 54075.1029 0.03% - 0s 0 0 54076.8320 0 2 54094.0000 54076.8320 0.03% - 0s 0 0 54077.2312 0 5 54094.0000 54077.2312 0.03% - 0s 0 0 54078.5067 0 2 54094.0000 54078.5067 0.03% - 0s 0 0 54078.9316 0 2 54094.0000 54078.9316 0.03% - 0s 0 0 54079.0923 0 2 54094.0000 54079.0923 0.03% - 0s 0 0 54086.1819 0 4 54094.0000 54086.1819 0.01% - 0s 0 0 54088.3551 0 3 54094.0000 54088.3551 0.01% - 0s 0 0 54093.9474 0 1 54094.0000 54093.9474 0.00% - 1s Cutting planes: Implied bound: 93 Flow cover: 4 Explored 0 nodes (2749 simplex iterations) in 1.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.409400000000e+04, best bound 5.409394736842e+04, gap 0.0001%