
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:59:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6210.49.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/grafo6210.49.lp
Reading time = 0.27 seconds
: 138774 rows, 3239 columns, 419239 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 138774 rows, 3239 columns and 419239 nonzeros
Model fingerprint: 0xfc5436cb
Variable types: 57 continuous, 3182 integer (3182 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 24534 rows and 1 columns
Presolve time: 1.01s
Presolved: 114240 rows, 3238 columns, 346195 nonzeros
Variable types: 0 continuous, 3238 integer (3181 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3211 rows, 117451 columns, 349433 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14474    5.9987453e+01   0.000000e+00   1.264604e+05      5s
   26694    5.7940389e+01   0.000000e+00   4.085738e+04     10s
   38883    5.7924022e+01   0.000000e+00   3.027312e+04     15s
   50098    5.7915719e+01   0.000000e+00   3.221330e+04     20s
   61683    5.7910289e+01   0.000000e+00   7.010879e+03     25s
   72902    5.7906774e+01   0.000000e+00   1.258750e+04     30s
   83952    5.7904259e+01   0.000000e+00   4.831134e+04     35s
   95322    5.7902869e+01   0.000000e+00   1.399573e+04     40s
  107222    5.7902045e+01   0.000000e+00   8.323945e+02     45s

Root relaxation: time limit, 117821 iterations, 48.67 seconds (32.65 work units)

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

     0     0          -    0         9.00000  284.00000  3056%     -   50s

Explored 1 nodes (117821 simplex iterations) in 50.02 seconds (33.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 2.840000000000e+02, gap 3055.5556%

Wrote result file './lp_solutions/grafo6210.49.sol'

