Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:00 2013 Optimize a model with 63 rows, 49 columns and 168 nonzeros Presolve removed 21 rows and 21 columns Presolve time: 0.00s Presolved: 42 rows, 28 columns, 126 nonzeros Variable types: 7 continuous, 21 integer (21 binary) Found heuristic solution: objective 1547.0000000 Root relaxation: objective 3.270000e+02, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 327.00000 0 11 1547.00000 327.00000 78.9% - 0s 0 0 511.65719 0 9 1547.00000 511.65719 66.9% - 0s 0 0 523.29354 0 10 1547.00000 523.29354 66.2% - 0s 0 0 523.29354 0 10 1547.00000 523.29354 66.2% - 0s 0 2 524.89469 0 10 1547.00000 524.89469 66.1% - 0s * 10 10 7 1042.0000000 557.33764 46.5% 4.5 0s * 70 22 9 1039.0000000 632.00000 39.2% 3.0 0s * 71 21 9 1038.0000000 632.00000 39.1% 2.9 0s * 232 4 9 1028.0000000 910.00000 11.5% 2.5 0s Cutting planes: Implied bound: 6 MIR: 18 Explored 241 nodes (630 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.028000000000e+03, best bound 1.028000000000e+03, gap 0.0%