
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:02:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3306.41.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/grafo3306.41.lp
Reading time = 0.19 seconds
: 118816 rows, 2299 columns, 358351 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 118816 rows, 2299 columns and 358351 nonzeros
Model fingerprint: 0x9246ec03
Variable types: 47 continuous, 2252 integer (2252 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 36869 rows and 27 columns
Presolve time: 0.86s
Presolved: 81947 rows, 2272 columns, 248203 nonzeros
Variable types: 0 continuous, 2272 integer (2225 binary)
Root relaxation presolved: 2269 rows, 84216 columns, 250475 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23838    5.1941901e+01   0.000000e+00   1.274075e+05      5s
   49578    5.1916901e+01   0.000000e+00   6.837229e+01     10s
   51276    5.2000000e+01   0.000000e+00   0.000000e+00     10s
   51276    5.2000000e+01   0.000000e+00   0.000000e+00     10s
   51276    5.2000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 5.200000e+01, 51276 iterations, 9.33 seconds (7.47 work units)
Total elapsed time = 20.86s (DegenMoves)
Total elapsed time = 29.85s (DegenMoves)
Total elapsed time = 32.26s (DegenMoves)

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

     0     0   52.00000    0  416          -   52.00000      -     -   34s
H    0     0                       6.0000000   52.00000   767%     -   34s
H    0     0                       8.0000000   52.00000   550%     -   35s
     0     0   52.00000    0  792    8.00000   52.00000   550%     -   46s
H    0     0                      10.0000000   52.00000   420%     -   47s
     0     0   52.00000    0  758   10.00000   52.00000   420%     -   48s

Cutting planes:
  Cover: 22
  Clique: 15
  MIR: 166
  StrongCG: 1
  GUB cover: 1
  Zero half: 4
  RLT: 34
  BQP: 1

Explored 1 nodes (83457 simplex iterations) in 50.03 seconds (56.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 8 6 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.200000000000e+01, gap 420.0000%

Wrote result file './lp_solutions/grafo3306.41.sol'

