
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:37:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1555.37.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo1555.37.lp
Reading time = 0.70 seconds
: 445169 rows, 2028 columns, 1337197 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 445169 rows, 2028 columns and 1337197 nonzeros
Model fingerprint: 0xb179bdd7
Variable types: 41 continuous, 1987 integer (1987 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective 2.0000000
Presolve removed 216138 rows and 7 columns
Presolve time: 3.20s
Presolved: 229031 rows, 2021 columns, 689152 nonzeros
Variable types: 0 continuous, 2021 integer (1980 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2015 rows, 231046 columns, 691173 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9081    1.4362408e+02   0.000000e+00   2.242785e+06      5s
   46017    5.8233732e+01   0.000000e+00   1.740188e+06     10s
   72792    4.3983911e+01   0.000000e+00   1.351281e+05     15s
  100417    4.3928681e+01   0.000000e+00   7.175382e+04     20s
  130166    4.3918710e+01   0.000000e+00   2.656868e+02     25s
  136666    4.4000000e+01   0.000000e+00   0.000000e+00     26s
  136666    4.4000000e+01   0.000000e+00   0.000000e+00     26s
  136666    4.4000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 4.400000e+01, 136666 iterations, 22.80 seconds (16.66 work units)
Total elapsed time = 45.99s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   44.00000    0  590    8.00000   44.00000   450%     -   50s

Explored 1 nodes (146087 simplex iterations) in 50.14 seconds (48.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 2 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.400000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo1555.37.sol'

