Build (method = -2) #dp: 78 Step-3' Graph: 19 vertices and 50 arcs (0.00s) Step-4' Graph: 12 vertices and 36 arcs (0.00s) #V4/#V3 = 0.63 #A4/#A3 = 0.72 Ready! (0.00s) Optimize a model with 22 rows, 37 columns and 91 nonzeros Presolve removed 9 rows and 9 columns Presolve time: 0.00s Presolved: 13 rows, 28 columns, 66 nonzeros Variable types: 0 continuous, 28 integer (0 binary) Found heuristic solution: objective 79.0000000 Optimize a model with 13 rows, 28 columns and 66 nonzeros Presolved: 13 rows, 28 columns, 66 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.000e+01 Factor NZ : 9.100e+01 Factor Ops : 8.190e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.03168901e+02 -5.10025572e+01 1.53e+02 5.55e-17 1.13e+01 0s 1 8.16583740e+01 9.95421006e+00 5.03e+00 1.67e-16 1.50e+00 0s 2 7.90496882e+01 7.68683675e+01 1.78e-14 1.11e-16 4.12e-02 0s 3 7.90000506e+01 7.89978693e+01 1.07e-14 2.22e-16 4.12e-05 0s Barrier performed 3 iterations in 0.00 seconds Objective cutoff exceeded Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.900000000000e+01, best bound 7.900000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 79 Solution: 1 x [1] 3 x [1, 10] 15 x [2] 11 x [3] 10 x [3, 8] 15 x [4] 13 x [5] 2 x [5, 7] 3 x [5, 7, 9] 6 x [6]