
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:22:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7369.48.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/grafo7369.48.lp
Reading time = 0.26 seconds
: 156977 rows, 3152 columns, 473752 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 156977 rows, 3152 columns and 473752 nonzeros
Model fingerprint: 0xcc52c50d
Variable types: 57 continuous, 3095 integer (3095 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]
Presolve removed 36326 rows and 1 columns
Presolve time: 1.05s
Presolved: 120651 rows, 3151 columns, 365209 nonzeros
Variable types: 0 continuous, 3151 integer (3094 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3109 rows, 123760 columns, 368360 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15641    5.9830254e+01   0.000000e+00   9.308910e+04      5s
   31950    5.8719257e+01   0.000000e+00   5.326406e+04     10s
   47264    5.8697578e+01   0.000000e+00   9.355786e+03     15s
   61096    5.8691406e+01   0.000000e+00   1.161812e+03     20s
   70320    5.9000000e+01   0.000000e+00   0.000000e+00     24s
   70320    5.9000000e+01   0.000000e+00   0.000000e+00     24s
   70320    5.9000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 5.900000e+01, 70320 iterations, 22.42 seconds (15.69 work units)

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

     0     0   59.00000    0 1612    9.00000   59.00000   556%     -   50s

Explored 1 nodes (83362 simplex iterations) in 50.09 seconds (39.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.900000000000e+01, gap 555.5556%

Wrote result file './lp_solutions/grafo7369.48.sol'

