Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:35 2013 Optimize a model with 231 rows, 121 columns and 726 nonzeros Presolve removed 140 rows and 74 columns Presolve time: 0.00s Presolved: 91 rows, 47 columns, 302 nonzeros Variable types: 4 continuous, 43 integer (43 binary) Found heuristic solution: objective 1971.0000000 Root relaxation: objective 1.692304e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1692.30435 0 2 1971.00000 1692.30435 14.1% - 0s H 0 0 1697.0000000 1692.30435 0.28% - 0s 0 0 1695.57627 0 4 1697.00000 1695.57627 0.08% - 0s 0 0 1695.57627 0 2 1697.00000 1695.57627 0.08% - 0s Cutting planes: Gomory: 2 Implied bound: 1 MIR: 1 Explored 0 nodes (14 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.697000000000e+03, best bound 1.697000000000e+03, gap 0.0%