Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:09:42 2013 Optimize a model with 47056 rows, 46376 columns and 185096 nonzeros Presolve removed 68 rows and 0 columns Presolve time: 0.21s Presolved: 46988 rows, 46376 columns, 185028 nonzeros Variable types: 46308 continuous, 68 integer (68 binary) Root relaxation: objective 5.699198e+04, 6047 iterations, 4.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 56991.9800 0 56 - 56991.9800 - - 4s H 0 0 87680.000000 56991.9800 35.0% - 7s 0 0 72096.3690 0 6 87680.0000 72096.3690 17.8% - 11s H 0 0 78257.548005 72096.3690 7.87% - 11s H 0 0 76877.000000 72096.3690 6.22% - 11s 0 0 73332.9994 0 9 76877.0000 73332.9994 4.61% - 12s 0 0 73469.8917 0 5 76877.0000 73469.8917 4.43% - 13s H 0 0 75440.141451 73469.8917 2.61% - 13s H 0 0 74583.000000 73469.8917 1.49% - 13s H 0 0 73570.000000 73469.8917 0.14% - 13s 0 0 73473.5627 0 4 73570.0000 73473.5627 0.13% - 13s 0 0 73491.3045 0 2 73570.0000 73491.3045 0.11% - 13s H 0 0 73539.000000 73491.3045 0.06% - 14s H 0 0 73526.000000 73491.3045 0.05% - 14s 0 0 73491.3045 0 44 73526.0000 73491.3045 0.05% - 18s 0 0 73491.3045 0 5 73526.0000 73491.3045 0.05% - 24s 0 0 73491.3045 0 4 73526.0000 73491.3045 0.05% - 25s 0 0 73525.0345 0 1 73526.0000 73525.0345 0.00% - 25s Cutting planes: Gomory: 2 Implied bound: 47 Explored 0 nodes (20350 simplex iterations) in 25.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.352600000000e+04, best bound 7.352503448276e+04, gap 0.0013%