Build (method = -2) #dp: 3378 Step-3' Graph: 101 vertices and 1386 arcs (0.01s) Step-4' Graph: 100 vertices and 1384 arcs (0.01s) #V4/#V3 = 0.99 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 159 rows, 1385 columns and 3959 nonzeros Presolve removed 34 rows and 36 columns Presolve time: 0.02s Presolved: 125 rows, 1349 columns, 3887 nonzeros Variable types: 0 continuous, 1349 integer (629 binary) Found heuristic solution: objective 72.0000000 Optimize a model with 125 rows, 1349 columns and 3887 nonzeros Presolved: 125 rows, 1349 columns, 3887 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.939e+03 Factor NZ : 5.463e+03 Factor Ops : 3.269e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.02024827e+03 -4.72011405e+03 3.58e+03 2.05e-01 2.32e+01 0s 1 7.64984758e+02 -2.19068455e+03 7.51e+02 7.77e-16 5.15e+00 0s 2 1.75183003e+02 -7.83926916e+02 5.94e+01 1.44e-15 6.37e-01 0s 3 8.78819520e+01 -7.96564413e+01 3.49e+00 6.11e-16 7.20e-02 0s 4 7.11716638e+01 2.17721029e+00 1.10e+00 4.44e-16 2.74e-02 0s 5 5.96742994e+01 2.16375015e+01 3.79e-01 4.30e-16 1.45e-02 0s 6 5.51929063e+01 3.80000744e+01 2.10e-01 3.80e-16 6.56e-03 0s 7 5.14420075e+01 4.31103033e+01 8.59e-02 4.44e-16 3.15e-03 0s 8 4.94000311e+01 4.66411257e+01 1.10e-02 3.04e-16 1.03e-03 0s 9 4.90264155e+01 4.88810932e+01 4.31e-05 3.43e-16 5.36e-05 0s 10 4.90000278e+01 4.89998811e+01 1.00e-13 4.44e-16 5.41e-08 0s 11 4.90000000e+01 4.90000000e+01 4.97e-14 4.44e-16 5.41e-14 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 4.90000000e+01 Root relaxation: objective 4.900000e+01, 633 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 49.0000000 49.00000 0.0% - 0s Explored 0 nodes (633 simplex iterations) in 0.05 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.05 seconds Total run time: 0.08 seconds Objective: 49 Solution: 2 x [12, 59] 1 x [10, 59] 1 x [58] 1 x [9, 58] 1 x [5, 5, 58] 1 x [57] 1 x [3, 57] 1 x [14, 56] 1 x [13, 56] 2 x [2, 8, 55] 1 x [6, 55] 1 x [54] 1 x [4, 54] 1 x [15, 53] 1 x [16, 52] 1 x [18, 51] 1 x [9, 51] 1 x [17, 50] 1 x [17, 49] 1 x [21, 48] 1 x [20, 48] 1 x [19, 48] 1 x [22, 47] 2 x [22, 46] 2 x [23, 45] 1 x [6, 45] 1 x [26, 44] 1 x [25, 44] 1 x [24, 44] 1 x [11, 43] 1 x [28, 42] 3 x [27, 42] 1 x [18, 41] 1 x [29, 40] 1 x [1, 7, 16, 40] 2 x [31, 39] 1 x [38] 1 x [32, 38] 1 x [4, 30, 38] 1 x [35, 37] 1 x [33, 36] 1 x [33, 34]