Gurobi 5.6.3 (linux64) logging started Tue Oct 7 21:01:31 2014 Optimize a model with 7833 rows, 7832 columns and 23320 nonzeros Presolve time: 0.14s Presolved: 7833 rows, 7832 columns, 23320 nonzeros Variable types: 0 continuous, 7832 integer (7832 binary) Found heuristic solution: objective 14.9177192 Root relaxation: objective 9.723404e+00, 1046 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 9.7234039 9.72340 0.00% - 0s Explored 0 nodes (1046 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.723403861431e+00, best bound 9.723403861431e+00, gap 0.0%