
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:12:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3234.50.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/grafo3234.50.lp
Reading time = 0.35 seconds
: 204437 rows, 3229 columns, 616126 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 204437 rows, 3229 columns and 616126 nonzeros
Model fingerprint: 0x31127879
Variable types: 56 continuous, 3173 integer (3173 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 60028 rows and 31 columns
Presolve time: 1.89s
Presolved: 144409 rows, 3198 columns, 436591 nonzeros
Variable types: 0 continuous, 3198 integer (3142 binary)
Root relaxation presolved: 3198 rows, 147607 columns, 439789 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11411    5.7017751e+01   0.000000e+00   1.680950e+06      5s
   26906    5.2886737e+01   0.000000e+00   3.697975e+04     10s
   40586    5.2864479e+01   0.000000e+00   2.173000e+04     15s
   53126    5.2856745e+01   0.000000e+00   3.027123e+03     20s
   65096    5.2854018e+01   0.000000e+00   1.083404e+03     25s
   72747    5.3000000e+01   0.000000e+00   0.000000e+00     28s
   72747    5.3000000e+01   0.000000e+00   0.000000e+00     28s

Root relaxation: objective 5.300000e+01, 72747 iterations, 26.15 seconds (16.08 work units)

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

     0     0   53.00000    0 1677          -   53.00000      -     -   50s
H    0     0                       2.0000000   53.00000  2550%     -   50s

Explored 1 nodes (80322 simplex iterations) in 50.08 seconds (34.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 2 

Time limit reached
Best objective 2.000000000000e+00, best bound 5.300000000000e+01, gap 2550.0000%

Wrote result file './lp_solutions/grafo3234.50.sol'

