Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:58:45 2013 Optimize a model with 16440 rows, 16040 columns and 64040 nonzeros Presolve removed 993 rows and 0 columns Presolve time: 0.09s Presolved: 15447 rows, 16040 columns, 62054 nonzeros Variable types: 16000 continuous, 40 integer (40 binary) Root relaxation: objective 4.492200e+04, 2830 iterations, 0.19 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44922.0000 0 2 - 44922.0000 - - 0s H 0 0 45314.000000 44922.0000 0.87% - 0s H 0 0 45199.000000 44922.0000 0.61% - 0s 0 0 44923.0711 0 3 45199.0000 44923.0711 0.61% - 0s 0 0 44923.0711 0 3 45199.0000 44923.0711 0.61% - 0s 0 2 44927.6555 0 3 45199.0000 44927.6555 0.60% - 0s * 2 2 2 45120.000000 45120.0000 0.0% 139 0s Cutting planes: Gomory: 1 Flow cover: 2 Explored 3 nodes (3155 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.512000000000e+04, best bound 4.512000000000e+04, gap 0.0%