
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:48:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3654.43.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/grafo3654.43.lp
Reading time = 0.22 seconds
: 140017 rows, 2903 columns, 422843 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 140017 rows, 2903 columns and 422843 nonzeros
Model fingerprint: 0xb9a05672
Variable types: 56 continuous, 2847 integer (2847 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, 6e+01]
Found heuristic solution: objective 1.0000000
Presolve removed 33922 rows and 30 columns
Presolve time: 1.00s
Presolved: 106095 rows, 2873 columns, 321706 nonzeros
Variable types: 0 continuous, 2873 integer (2817 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2861 rows, 108956 columns, 324579 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19500    5.5764632e+01   0.000000e+00   1.164160e+05      5s
   38943    5.5719450e+01   0.000000e+00   3.005508e+04     10s
   56655    5.5710848e+01   0.000000e+00   1.050114e+03     15s
   67810    5.6000000e+01   0.000000e+00   0.000000e+00     18s
   67810    5.6000000e+01   0.000000e+00   0.000000e+00     18s
   67810    5.6000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.600000e+01, 67810 iterations, 17.31 seconds (13.56 work units)

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

     0     0   56.00000    0 1625    6.00000   56.00000   833%     -   50s

Explored 1 nodes (85609 simplex iterations) in 50.03 seconds (45.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 1 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.600000000000e+01, gap 833.3333%

Wrote result file './lp_solutions/grafo3654.43.sol'

