Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:13 2013 Optimize a model with 135 rows, 100 columns and 360 nonzeros Presolve removed 45 rows and 45 columns Presolve time: 0.00s Presolved: 90 rows, 55 columns, 270 nonzeros Variable types: 10 continuous, 45 integer (45 binary) Found heuristic solution: objective 2793.0000000 Root relaxation: objective 6.920000e+02, 42 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 692.00000 0 37 2793.00000 692.00000 75.2% - 0s 0 0 884.56105 0 28 2793.00000 884.56105 68.3% - 0s 0 0 892.11395 0 33 2793.00000 892.11395 68.1% - 0s 0 0 894.06808 0 33 2793.00000 894.06808 68.0% - 0s 0 0 903.57580 0 37 2793.00000 903.57580 67.6% - 0s 0 0 903.57580 0 37 2793.00000 903.57580 67.6% - 0s 0 0 903.57580 0 37 2793.00000 903.57580 67.6% - 0s H 0 0 1964.0000000 903.57580 54.0% - 0s 0 2 909.64398 0 36 1964.00000 909.64398 53.7% - 0s * 40 38 27 1947.0000000 918.72162 52.8% 5.1 0s * 166 131 20 1881.0000000 977.95577 48.0% 5.5 0s H 176 122 1861.0000000 982.85999 47.2% 5.7 0s H 355 194 1729.0000000 1033.75254 40.2% 5.0 0s * 365 192 18 1716.0000000 1033.75254 39.8% 4.9 0s H 1037 375 1705.0000000 1084.00000 36.4% 5.7 0s H 1604 424 1701.0000000 1084.00000 36.3% 5.1 0s Cutting planes: Gomory: 10 Implied bound: 4 MIR: 17 Explored 41452 nodes (104181 simplex iterations) in 2.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.701000000000e+03, best bound 1.701000000000e+03, gap 0.0%