Build (method = -2) #dp: 218 Step-3' Graph: 62 vertices and 179 arcs (0.00s) Step-4' Graph: 22 vertices and 99 arcs (0.00s) #V4/#V3 = 0.35 #A4/#A3 = 0.55 Ready! (0.00s) Optimize a model with 42 rows, 100 columns and 260 nonzeros Presolve removed 12 rows and 16 columns Presolve time: 0.00s Presolved: 30 rows, 84 columns, 219 nonzeros Variable types: 0 continuous, 84 integer (8 binary) Found heuristic solution: objective 157.0000000 Optimize a model with 30 rows, 84 columns and 219 nonzeros Presolved: 30 rows, 84 columns, 219 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.190e+02 Factor NZ : 3.370e+02 Factor Ops : 4.479e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 9.57454833e+02 -1.31138085e+03 1.52e+03 1.92e-01 4.00e+01 0s 1 3.24397516e+02 -3.97522514e+02 1.84e+02 3.33e-16 6.51e+00 0s 2 1.56566795e+02 -3.23588145e+01 1.28e+01 4.44e-16 1.16e+00 0s 3 1.09604295e+02 7.31244108e+01 6.69e-01 2.22e-16 2.06e-01 0s 4 9.95247280e+01 9.22224593e+01 6.65e-02 2.22e-16 4.11e-02 0s 5 9.81686208e+01 9.70185128e+01 1.69e-03 3.33e-16 6.46e-03 0s 6 9.80268762e+01 9.79274838e+01 2.90e-04 2.22e-16 5.58e-04 0s 7 9.80001015e+01 9.79999088e+01 1.69e-07 1.18e-16 1.08e-06 0s 8 9.80000001e+01 9.79999999e+01 1.26e-12 2.22e-16 1.08e-09 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 9.80000001e+01 Root relaxation: objective 9.800000e+01, 32 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 98.0000000 98.00000 0.0% - 0s Explored 0 nodes (32 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.800000000000e+01, best bound 9.800000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 98 Solution: 5 x [1] 7 x [2] 14 x [3, 18] 1 x [4, 17] 9 x [5, 16] 18 x [6, 15] 2 x [7, 14] 6 x [7, 16] 7 x [8, 9] 4 x [8, 12] 3 x [9, 12] 6 x [10, 11] 5 x [11, 17, 20] 1 x [11, 19, 20] 9 x [12, 17, 19] 1 x [13, 17, 18]