
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:43:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5221.44.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/grafo5221.44.lp
Reading time = 0.29 seconds
: 145950 rows, 2659 columns, 440104 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 145950 rows, 2659 columns and 440104 nonzeros
Model fingerprint: 0x94034fdf
Variable types: 50 continuous, 2609 integer (2609 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]
Presolve removed 53766 rows and 62 columns
Presolve time: 1.13s
Presolved: 92184 rows, 2597 columns, 279290 nonzeros
Variable types: 0 continuous, 2597 integer (2547 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2594 rows, 94778 columns, 281887 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15427    6.3990249e+01   0.000000e+00   7.651364e+04      5s
   32582    6.1965921e+01   0.000000e+00   1.385338e+04     10s
   47772    6.1958175e+01   0.000000e+00   1.324449e+04     15s
   63241    6.1953838e+01   0.000000e+00   4.882963e+03     20s
   77135    6.2000000e+01   0.000000e+00   0.000000e+00     25s
   77135    6.2000000e+01   0.000000e+00   0.000000e+00     25s
   77135    6.2000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 6.200000e+01, 77135 iterations, 23.36 seconds (16.65 work units)
Total elapsed time = 25.05s (DegenMoves)
Total elapsed time = 49.21s (DegenMoves)

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

     0     0   62.00000    0  642    9.00000   62.00000   589%     -   50s

Explored 1 nodes (91835 simplex iterations) in 50.04 seconds (38.72 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.200000000000e+01, gap 588.8889%

Wrote result file './lp_solutions/grafo5221.44.sol'

