Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:12:55 2013 Optimize a model with 26622 rows, 26112 columns and 104142 nonzeros Presolve removed 51 rows and 0 columns Presolve time: 0.12s Presolved: 26571 rows, 26112 columns, 104091 nonzeros Variable types: 26061 continuous, 51 integer (51 binary) Root relaxation: objective 3.957289e+04, 2787 iterations, 0.83 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 39572.8857 0 42 - 39572.8857 - - 1s H 0 0 51221.000000 39572.8857 22.7% - 1s 0 0 44722.3843 0 5 51221.0000 44722.3843 12.7% - 2s H 0 0 48192.176098 44722.3843 7.20% - 2s H 0 0 45929.000000 44722.3843 2.63% - 2s H 0 0 44833.000000 44722.3843 0.25% - 2s 0 0 44738.6888 0 4 44833.0000 44738.6888 0.21% - 2s 0 0 44741.5029 0 3 44833.0000 44741.5029 0.20% - 3s 0 0 44794.0702 0 2 44833.0000 44794.0702 0.09% - 3s 0 2 44795.3333 0 2 44833.0000 44795.3333 0.08% - 3s Cutting planes: Gomory: 1 Implied bound: 43 Explored 6 nodes (4840 simplex iterations) in 4.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.483300000000e+04, best bound 4.483300000000e+04, gap 0.0%