Build (method = -2) #dp: 5676 Step-3' Graph: 100 vertices and 3431 arcs (0.02s) Step-4' Graph: 97 vertices and 3425 arcs (0.02s) #V4/#V3 = 0.97 #A4/#A3 = 1.00 Ready! (0.02s) Optimize a model with 217 rows, 3426 columns and 10088 nonzeros Presolve removed 46 rows and 46 columns Presolve time: 0.04s Presolved: 171 rows, 3380 columns, 9863 nonzeros Variable types: 0 continuous, 3380 integer (3200 binary) Optimize a model with 171 rows, 3380 columns and 9863 nonzeros Presolved: 171 rows, 3380 columns, 9863 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.006e+03 Factor NZ : 9.225e+03 (roughly 1 MByte of memory) Factor Ops : 6.697e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.66781383e+03 -2.04390000e+03 1.47e+04 0.00e+00 2.15e+00 0s 1 1.04496955e+03 -3.89669304e+02 3.51e+03 2.65e-03 5.16e-01 0s 2 1.70554300e+02 -1.33382984e+01 3.24e+02 2.22e-16 5.47e-02 0s 3 6.15196198e+01 3.07643150e+01 3.56e+01 2.22e-16 7.47e-03 0s 4 5.29636562e+01 3.96796343e+01 1.36e+01 3.05e-06 2.86e-03 0s 5 4.99970256e+01 4.28933708e+01 6.15e+00 2.22e-16 1.38e-03 0s 6 4.86684103e+01 4.52552164e+01 2.58e+00 2.22e-16 6.12e-04 0s 7 4.81753338e+01 4.63680300e+01 1.35e+00 1.59e-16 3.11e-04 0s 8 4.80513791e+01 4.68471177e+01 1.06e+00 2.29e-16 2.08e-04 0s 9 4.77842094e+01 4.71358826e+01 4.48e-01 1.88e-16 1.07e-04 0s 10 4.76189623e+01 4.73417273e+01 7.22e-02 2.28e-16 4.26e-05 0s 11 4.75480646e+01 4.74236032e+01 2.37e-02 2.05e-16 1.89e-05 0s 12 4.75295043e+01 4.74559782e+01 1.37e-02 2.22e-16 1.11e-05 0s 13 4.75140565e+01 4.74620826e+01 8.11e-03 1.73e-16 7.85e-06 0s 14 4.75067754e+01 4.74755998e+01 5.94e-03 2.95e-16 4.72e-06 0s 15 4.75042429e+01 4.74837583e+01 4.73e-03 2.23e-16 3.11e-06 0s 16 4.74925107e+01 4.74879750e+01 4.63e-04 2.22e-16 6.80e-07 0s 17 4.74898440e+01 4.74897428e+01 3.13e-06 2.92e-16 1.51e-08 0s 18 4.74897960e+01 4.74897959e+01 5.38e-13 2.22e-16 1.51e-11 0s 19 4.74897959e+01 4.74897959e+01 1.59e-13 2.76e-16 1.51e-14 0s Barrier solved model in 19 iterations and 0.04 seconds Optimal objective 4.74897959e+01 Root relaxation: objective 4.748980e+01, 423 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.48980 0 38 - 47.48980 - - 0s H 0 0 70.0000000 47.48980 32.2% - 0s H 0 0 48.0000000 47.48980 1.06% - 0s Explored 0 nodes (1518 simplex iterations) in 0.22 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0% Preprocessing time: 0.04 seconds Gurobi run time: 0.22 seconds Total run time: 0.26 seconds Objective: 48 Solution: 1 x [9, 88] 1 x [35, 77, 112] 1 x [57, 90] 1 x [20, 45] 1 x [62, 89] 1 x [59, 82] 1 x [16, 76] 1 x [21, 33, 48] 1 x [25, 101] 1 x [111, 113] 1 x [104, 116] 1 x [47, 106] 1 x [13, 115] 1 x [2, 31, 109] 1 x [55, 74, 85] 1 x [46, 68] 1 x [36, 61] 1 x [22, 71, 93] 1 x [14, 56, 79] 1 x [1, 18, 84] 1 x [10, 11, 65] 1 x [23, 107, 114] 1 x [28, 119] 1 x [42, 50, 58] 1 x [8, 60, 73] 1 x [12, 103] 1 x [39, 108] 1 x [3, 44] 1 x [24, 41, 118] 1 x [54, 117] 1 x [78, 81] 1 x [37, 51] 1 x [66, 96, 110] 1 x [6, 38, 43] 1 x [92, 95] 1 x [91, 94] 1 x [29, 30] 1 x [17, 26, 72] 1 x [15, 63, 98] 1 x [4, 97, 100] 1 x [70, 83, 87] 1 x [5, 52, 120] 1 x [32, 69] 1 x [34, 64, 75] 1 x [27, 86, 105] 1 x [7, 19, 80] 1 x [40, 49, 53] 1 x [67, 99, 102]