
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:10:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5234.41.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/grafo5234.41.lp
Reading time = 0.20 seconds
: 126266 rows, 2086 columns, 380456 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 126266 rows, 2086 columns and 380456 nonzeros
Model fingerprint: 0xcb734282
Variable types: 43 continuous, 2043 integer (2043 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]
Found heuristic solution: objective 6.0000000
Presolve removed 43631 rows and 18 columns
Presolve time: 0.87s
Presolved: 82635 rows, 2068 columns, 249949 nonzeros
Variable types: 0 continuous, 2068 integer (2025 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2062 rows, 84697 columns, 252017 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27841    3.8811066e+01   0.000000e+00   5.392467e+02      5s
   31181    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   31181    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   31181    3.9000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.900000e+01, 31181 iterations, 4.68 seconds (4.24 work units)
Total elapsed time = 10.46s (DegenMoves)

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

     0     0   39.00000    0  356   11.00000   39.00000   255%     -   11s
H    0     0                      13.0000000   39.00000   200%     -   11s
     0     0   39.00000    0  449   13.00000   39.00000   200%     -   17s
     0     0   39.00000    0  448   13.00000   39.00000   200%     -   18s
     0     0   39.00000    0  331   13.00000   39.00000   200%     -   38s
H    0     0                      15.0000000   39.00000   160%     -   38s
     0     0   39.00000    0  329   15.00000   39.00000   160%     -   38s
     0     0   39.00000    0  289   15.00000   39.00000   160%     -   48s
     0     0   39.00000    0  318   15.00000   39.00000   160%     -   49s

Cutting planes:
  Lift-and-project: 1
  Cover: 30
  Clique: 18
  MIR: 95
  StrongCG: 2
  GUB cover: 1
  Zero half: 2
  RLT: 20
  BQP: 5

Explored 1 nodes (71138 simplex iterations) in 50.11 seconds (59.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 15 13 11 6 

Time limit reached
Best objective 1.500000000000e+01, best bound 3.900000000000e+01, gap 160.0000%

Wrote result file './lp_solutions/grafo5234.41.sol'

