Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:14:28 2013 Optimize a model with 572 rows, 27092 columns and 54132 nonzeros Presolve time: 0.04s Presolved: 572 rows, 27092 columns, 54132 nonzeros Variable types: 27040 continuous, 52 integer (52 binary) Root relaxation: objective 5.721352e+04, 1115 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 57213.5220 0 6 - 57213.5220 - - 0s H 0 0 60298.000000 57213.5220 5.12% - 0s 0 0 57510.8624 0 5 60298.0000 57510.8624 4.62% - 0s H 0 0 60224.000000 57510.8624 4.51% - 0s 0 0 57542.3049 0 3 60224.0000 57542.3049 4.45% - 0s H 0 0 59283.012900 57542.3049 2.94% - 0s H 0 0 58620.000000 57542.3049 1.84% - 0s 0 0 57555.5983 0 3 58620.0000 57555.5983 1.82% - 0s H 0 0 58618.000000 57555.5983 1.81% - 0s 0 0 57560.1496 0 4 58618.0000 57560.1496 1.80% - 0s 0 0 57560.1496 0 4 58618.0000 57560.1496 1.80% - 0s 0 0 57560.1496 0 4 58618.0000 57560.1496 1.80% - 0s 0 0 57560.1513 0 4 58618.0000 57560.1513 1.80% - 0s H 0 0 58224.000000 57560.1513 1.14% - 0s 0 2 57562.7897 0 4 58224.0000 57562.7897 1.14% - 0s H 10 5 58021.000000 57688.6327 0.57% 27.8 0s * 13 6 11 57951.000000 57688.6327 0.45% 28.1 0s * 27 5 6 57812.000000 57754.6099 0.10% 27.4 0s Cutting planes: Implied bound: 72 Flow cover: 2 Explored 34 nodes (2190 simplex iterations) in 0.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.781200000000e+04, best bound 5.781200000000e+04, gap 0.0%