Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:57:33 2012 Optimize a model with 3574 rows, 119 columns and 7148 nonzeros Presolve removed 2562 rows and 0 columns Presolve time: 0.12s Presolved: 1012 rows, 119 columns, 7048 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.565816e+01, 465 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.65816 0 117 7.00000 15.65816 124% - 0s 0 0 15.35899 0 118 7.00000 15.35899 119% - 0s H 0 0 8.0000000 15.35899 92.0% - 0s 0 0 15.28323 0 117 8.00000 15.28323 91.0% - 0s 0 0 15.26717 0 118 8.00000 15.26717 90.8% - 0s 0 0 15.26321 0 118 8.00000 15.26321 90.8% - 0s 0 0 15.25702 0 118 8.00000 15.25702 90.7% - 0s 0 0 15.25562 0 118 8.00000 15.25562 90.7% - 1s 0 0 15.25549 0 118 8.00000 15.25549 90.7% - 1s H 0 0 9.0000000 15.25549 69.5% - 1s 0 2 15.25537 0 118 9.00000 15.25537 69.5% - 1s Cutting planes: Clique: 58 Zero half: 2 Explored 474 nodes (30192 simplex iterations) in 3.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%