Gurobi 5.0.1 (linux64) logging started Thu Jan 24 18:13:43 2013 Optimize a model with 5 rows, 250 columns and 1250 nonzeros Presolve time: 0.00s Presolved: 5 rows, 250 columns, 1250 nonzeros Variable types: 0 continuous, 250 integer (250 binary) Found heuristic solution: objective 51272.000000 Root relaxation: objective 6.162934e+04, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61629.3360 0 5 51272.0000 61629.3360 20.2% - 0s H 0 0 61310.000000 61629.3360 0.52% - 0s 0 0 61627.4632 0 7 61310.0000 61627.4632 0.52% - 0s 0 0 61627.1863 0 9 61310.0000 61627.1863 0.52% - 0s 0 0 61627.1863 0 5 61310.0000 61627.1863 0.52% - 0s 0 0 61627.1863 0 7 61310.0000 61627.1863 0.52% - 0s 0 0 61627.1863 0 9 61310.0000 61627.1863 0.52% - 0s 0 2 61626.9682 0 9 61310.0000 61626.9682 0.52% - 0s H 606 501 61358.000000 61617.0563 0.42% 2.0 0s H 629 492 61383.000000 61617.0563 0.38% 2.1 0s H 1211 714 61413.000000 61616.8652 0.33% 2.6 0s H 1622 827 61454.000000 61614.8557 0.26% 2.8 0s H 6556 3680 61468.000000 61593.5154 0.20% 2.3 0s H44140 17659 61472.000000 61565.6911 0.15% 2.3 2s 92367 25437 61528.5335 75 4 61472.0000 61557.6575 0.14% 2.4 5s 204604 51721 61518.2695 65 5 61472.0000 61534.4734 0.10% 2.4 10s 321905 53400 cutoff 62 61472.0000 61518.5751 0.08% 2.4 15s 443375 25407 61489.7930 63 5 61472.0000 61498.5591 0.04% 2.3 20s Cutting planes: Gomory: 7 MIR: 4 Explored 480090 nodes (1099126 simplex iterations) in 21.47 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.147200000000e+04, best bound 6.147800000000e+04, gap 0.0098%