
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:58:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3454.39.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/grafo3454.39.lp
Reading time = 0.15 seconds
: 93798 rows, 2030 columns, 283038 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 93798 rows, 2030 columns and 283038 nonzeros
Model fingerprint: 0x03678397
Variable types: 43 continuous, 1987 integer (1987 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 28986 rows and 14 columns
Presolve time: 0.63s
Presolved: 64812 rows, 2016 columns, 196490 nonzeros
Variable types: 0 continuous, 2016 integer (1973 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2016 rows, 66828 columns, 198506 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28039    4.7795161e+01   0.000000e+00   9.672149e+02      5s
   32895    4.8000000e+01   0.000000e+00   0.000000e+00      6s
   32895    4.8000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.800000e+01, 32895 iterations, 5.13 seconds (4.56 work units)
Total elapsed time = 10.90s (DegenMoves)

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

     0     0   48.00000    0  463    8.00000   48.00000   500%     -   12s
H    0     0                      11.0000000   48.00000   336%     -   12s
H    0     0                      14.0000000   48.00000   243%     -   22s
H    0     0                      15.0000000   48.00000   220%     -   22s
     0     0   47.00000    0  699   15.00000   47.00000   213%     -   22s
     0     0   47.00000    0  672   15.00000   47.00000   213%     -   23s
     0     0   47.00000    0  471   15.00000   47.00000   213%     -   45s
H    0     0                      16.0000000   47.00000   194%     -   46s
     0     0   47.00000    0  499   16.00000   47.00000   194%     -   47s
     0     0          -    0        16.00000   47.00000   194%     -   50s

Cutting planes:
  Cover: 25
  Clique: 14
  MIR: 149
  StrongCG: 2
  GUB cover: 2
  Zero half: 45
  RLT: 80
  Relax-and-lift: 1

Explored 1 nodes (66775 simplex iterations) in 50.09 seconds (45.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 16 15 14 ... 8

Time limit reached
Best objective 1.600000000000e+01, best bound 4.700000000000e+01, gap 193.7500%

Wrote result file './lp_solutions/grafo3454.39.sol'

