
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:02:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3544.42.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/grafo3544.42.lp
Reading time = 0.43 seconds
: 226233 rows, 2643 columns, 681006 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 226233 rows, 2643 columns and 681006 nonzeros
Model fingerprint: 0xf1eaf486
Variable types: 51 continuous, 2592 integer (2592 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 88662 rows and 24 columns
Presolve time: 2.11s
Presolved: 137571 rows, 2619 columns, 415476 nonzeros
Variable types: 0 continuous, 2619 integer (2568 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2619 rows, 140190 columns, 418095 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10827    1.3174748e+02   0.000000e+00   2.287190e+06      5s
   31005    7.0996989e+01   0.000000e+00   1.316009e+05     10s
   47573    6.4876631e+01   0.000000e+00   9.423413e+04     15s
   64278    6.4820556e+01   0.000000e+00   7.163743e+04     20s
   79748    6.4805047e+01   0.000000e+00   2.084312e+04     25s
   95814    6.4798331e+01   0.000000e+00   1.544748e+03     30s
  109499    6.4796883e+01   0.000000e+00   2.632639e+02     35s
  113260    6.5000000e+01   0.000000e+00   0.000000e+00     37s
  113260    6.5000000e+01   0.000000e+00   0.000000e+00     37s

Root relaxation: objective 6.500000e+01, 113260 iterations, 34.44 seconds (19.90 work units)

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

     0     0   65.00000    0 1580    6.00000   65.00000   983%     -   50s

Explored 1 nodes (117616 simplex iterations) in 50.06 seconds (32.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 6.500000000000e+01, gap 983.3333%

Wrote result file './lp_solutions/grafo3544.42.sol'

