Build (method = -2) #dp: 35904 Step-3' Graph: 1159 vertices and 6678 arcs (0.31s) Step-4' Graph: 506 vertices and 5372 arcs (0.32s) #V4/#V3 = 0.44 #A4/#A3 = 0.80 Ready! (0.32s) Optimize a model with 626 rows, 5373 columns and 15111 nonzeros Presolve removed 94 rows and 94 columns Presolve time: 0.05s Presolved: 532 rows, 5279 columns, 15105 nonzeros Variable types: 0 continuous, 5279 integer (4467 binary) Optimize a model with 532 rows, 5279 columns and 15105 nonzeros Presolved: 532 rows, 5279 columns, 15105 nonzeros Root barrier log... Ordering time: 0.01s Barrier statistics: AA' NZ : 8.755e+03 Factor NZ : 2.504e+04 (roughly 3 MBytes of memory) Factor Ops : 1.974e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.02428459e+03 -2.09570552e+04 2.73e+04 3.03e-01 1.23e+01 0s 1 1.56689027e+03 -4.56568292e+03 5.25e+03 5.36e-02 2.46e+00 0s 2 3.47297674e+02 -1.08049433e+03 6.57e+02 1.30e-03 3.51e-01 0s 3 1.45194156e+02 -2.30668036e+02 1.87e+02 6.66e-16 9.84e-02 0s 4 7.08392517e+01 -3.73254155e+01 3.15e+01 6.25e-16 1.99e-02 0s 5 5.85451428e+01 1.58242805e+01 8.50e+00 4.44e-16 5.87e-03 0s 6 5.37950511e+01 2.70984952e+01 3.85e+00 5.55e-16 3.16e-03 0s 7 5.20793299e+01 3.29385697e+01 2.74e+00 1.33e-05 2.18e-03 0s 8 4.99374127e+01 3.88902244e+01 1.52e+00 2.85e-16 1.18e-03 0s 9 4.77210711e+01 4.29251324e+01 3.96e-01 4.44e-16 4.76e-04 0s 10 4.65889166e+01 4.46013300e+01 9.99e-02 5.55e-16 1.92e-04 0s 11 4.63733063e+01 4.51840424e+01 6.58e-02 6.66e-16 1.15e-04 0s 12 4.62304886e+01 4.53692337e+01 4.53e-02 2.84e-16 8.29e-05 0s 13 4.60872357e+01 4.55705657e+01 2.71e-02 3.33e-16 4.97e-05 0s 14 4.60033781e+01 4.56878364e+01 1.84e-02 3.60e-16 3.03e-05 0s 15 4.59562518e+01 4.57152931e+01 1.38e-02 6.66e-16 2.32e-05 0s 16 4.58889285e+01 4.57363066e+01 7.72e-03 4.24e-16 1.46e-05 0s 17 4.58428411e+01 4.57686580e+01 3.55e-03 3.76e-16 7.11e-06 0s 18 4.58275316e+01 4.57810074e+01 2.20e-03 3.09e-16 4.46e-06 0s 19 4.58146850e+01 4.57862934e+01 1.20e-03 3.14e-16 2.72e-06 0s 20 4.58075556e+01 4.57910686e+01 7.04e-04 3.25e-16 1.58e-06 0s 21 4.58047587e+01 4.57932235e+01 5.25e-04 3.64e-16 1.10e-06 0s 22 4.58028341e+01 4.57968129e+01 2.52e-04 4.44e-16 5.76e-07 0s 23 4.58004307e+01 4.57995949e+01 4.97e-05 3.61e-16 8.02e-08 0s 24 4.58000006e+01 4.57999995e+01 2.54e-11 3.39e-16 1.05e-10 0s 25 4.58000000e+01 4.58000000e+01 5.55e-12 4.44e-16 1.05e-13 0s Barrier solved model in 25 iterations and 0.11 seconds Optimal objective 4.58000000e+01 Root relaxation: objective 4.580000e+01, 2548 iterations, 0.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 45.80000 0 22 - 45.80000 - - 0s H 0 0 47.0000000 45.80000 2.55% - 0s 0 0 45.80000 0 122 47.00000 45.80000 2.55% - 0s H 0 0 46.0000000 45.80000 0.43% - 0s Cutting planes: Gomory: 1 Zero half: 1 Explored 0 nodes (5067 simplex iterations) in 0.76 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0% Preprocessing time: 0.34 seconds Gurobi run time: 0.76 seconds Total run time: 1.10 seconds Objective: 46 Solution: 1 x [10, 27] 1 x [53, 98] 1 x [14, 91] 1 x [63, 74, 118] 1 x [41, 59] 1 x [20, 38, 64] 1 x [46, 96, 109] 1 x [36, 43, 69] 1 x [12, 70, 75] 1 x [93, 102] 1 x [55, 110, 116] 1 x [24, 68] 1 x [8, 18, 26] 1 x [67, 105, 120] 1 x [4, 7, 11] 1 x [9, 28, 32] 1 x [15, 25, 103] 1 x [23, 76, 81] 1 x [29, 30, 83] 1 x [61, 85, 88] 1 x [44, 45, 89] 1 x [21, 51, 82] 1 x [19, 111] 1 x [99, 107] 1 x [52, 115, 119] 1 x [50, 72, 94, 117] 1 x [42, 47, 60] 1 x [22, 71, 80] 1 x [17, 73, 95] 1 x [6, 48, 112] 1 x [5, 62] 1 x [39, 56, 108] 1 x [49, 90, 113] 1 x [13, 40] 1 x [37, 65] 1 x [84, 92] 1 x [58, 66, 106] 1 x [16, 31, 97] 1 x [1, 35, 54] 1 x [101, 114] 1 x [2, 34] 1 x [57, 100] 1 x [77, 104] 1 x [3, 86] 1 x [33, 79] 1 x [78, 87]