Build (method = -2) #dp: 260 Step-3' Graph: 28 vertices and 132 arcs (0.00s) Step-4' Graph: 18 vertices and 112 arcs (0.00s) #V4/#V3 = 0.64 #A4/#A3 = 0.85 Ready! (0.00s) Optimize a model with 38 rows, 113 columns and 310 nonzeros Presolve removed 11 rows and 14 columns Presolve time: 0.00s Presolved: 27 rows, 99 columns, 267 nonzeros Variable types: 0 continuous, 99 integer (7 binary) Found heuristic solution: objective 190.0000000 Found heuristic solution: objective 169.0000000 Optimize a model with 27 rows, 99 columns and 267 nonzeros Presolve removed 1 rows and 1 columns Presolved: 26 rows, 98 columns, 265 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.150e+02 Factor NZ : 2.790e+02 Factor Ops : 3.681e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.60213918e+02 -1.02072732e+03 9.71e+02 1.05e-01 3.27e+01 0s 1 2.52054026e+02 -3.69634671e+02 7.45e+01 4.44e-16 4.37e+00 0s 2 1.52950949e+02 1.75103542e+01 2.91e+00 2.78e-16 6.74e-01 0s 3 1.24388502e+02 5.83717750e+01 1.08e+00 2.22e-16 3.24e-01 0s 4 1.02411025e+02 8.49811425e+01 1.64e-01 1.65e-16 8.46e-02 0s 5 9.79010738e+01 9.48066672e+01 2.63e-02 2.22e-16 1.50e-02 0s 6 9.68530282e+01 9.67788983e+01 4.11e-04 1.11e-16 3.59e-04 0s 7 9.68333384e+01 9.68333260e+01 1.47e-08 2.22e-16 6.00e-08 0s 8 9.68333333e+01 9.68333333e+01 8.53e-14 2.22e-16 6.00e-11 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 9.68333333e+01 Root relaxation: objective 9.683333e+01, 24 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 96.83333 0 6 169.00000 96.83333 42.7% - 0s H 0 0 98.0000000 96.83333 1.19% - 0s H 0 0 97.0000000 96.83333 0.17% - 0s Explored 0 nodes (32 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.700000000000e+01, best bound 9.700000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.01 seconds Objective: 97 Solution: 4 x [5, 20] 11 x [5, 15] 6 x [8] 1 x [8, 20] 8 x [8, 9] 2 x [6, 7] 4 x [13, 19] 6 x [14, 19] 10 x [3, 17] 1 x [1, 17] 13 x [10, 12] 1 x [12, 18] 8 x [2, 4] 5 x [11, 11] 1 x [2, 10] 4 x [2, 2] 10 x [1, 6, 16] 1 x [1, 6, 14] 1 x [6, 14, 16]