
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:53:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11212.41.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/grafo11212.41.lp
Reading time = 0.24 seconds
: 147655 rows, 2754 columns, 445660 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 147655 rows, 2754 columns and 445660 nonzeros
Model fingerprint: 0xc344941c
Variable types: 54 continuous, 2700 integer (2700 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 44505 rows and 39 columns
Presolve time: 0.96s
Presolved: 103150 rows, 2715 columns, 312576 nonzeros
Variable types: 0 continuous, 2715 integer (2661 binary)
Root relaxation presolved: 2701 rows, 105851 columns, 315291 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19476    5.6819621e+01   0.000000e+00   3.076422e+05      5s
   42233    5.6685430e+01   0.000000e+00   4.306493e+04     10s
   63293    5.6667278e+01   0.000000e+00   4.307016e+03     15s
   76895    5.7000000e+01   0.000000e+00   0.000000e+00     18s
   76895    5.7000000e+01   0.000000e+00   0.000000e+00     18s
   76895    5.7000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.700000e+01, 76895 iterations, 17.13 seconds (13.61 work units)
Total elapsed time = 31.71s (DegenMoves)

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

     0     0   57.00000    0  487          -   57.00000      -     -   35s
H    0     0                       8.0000000   57.00000   613%     -   36s
     0     0  postponed    0         8.00000   57.00000   613%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 41
  Clique: 15
  MIR: 179
  StrongCG: 2
  GUB cover: 4
  Zero half: 110
  RLT: 47
  BQP: 5

Explored 1 nodes (99860 simplex iterations) in 50.03 seconds (50.15 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.700000000000e+01, gap 612.5000%

Wrote result file './lp_solutions/grafo11212.41.sol'

