
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 17:44:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2041.28.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/grafo2041.28.lp
Reading time = 0.27 seconds
: 133552 rows, 1371 columns, 401769 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 133552 rows, 1371 columns and 401769 nonzeros
Model fingerprint: 0x2e4e1f60
Variable types: 36 continuous, 1335 integer (1335 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 62723 rows and 10 columns
Presolve time: 1.28s
Presolved: 70829 rows, 1361 columns, 213798 nonzeros
Variable types: 0 continuous, 1361 integer (1325 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1358 rows, 72187 columns, 215159 nonzeros


Root relaxation: objective 4.900000e+01, 2162 iterations, 1.08 seconds (1.13 work units)
Total elapsed time = 9.71s (DegenMoves)
Total elapsed time = 10.86s (DegenMoves)

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

     0     0   49.00000    0  371    7.00000   49.00000   600%     -   11s
H    0     0                       8.0000000   49.00000   512%     -   12s
     0     0   49.00000    0  589    8.00000   49.00000   512%     -   21s
     0     0   49.00000    0  583    8.00000   49.00000   512%     -   22s
H    0     0                       9.0000000   49.00000   444%     -   47s
     0     0   49.00000    0  560    9.00000   49.00000   444%     -   48s
     0     0   49.00000    0  539    9.00000   49.00000   444%     -   49s

Cutting planes:
  Cover: 40
  Clique: 54
  MIR: 142
  StrongCG: 3
  GUB cover: 2
  RLT: 14
  BQP: 5

Explored 1 nodes (22872 simplex iterations) in 50.11 seconds (35.48 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.900000000000e+01, gap 444.4444%

Wrote result file './lp_solutions/grafo2041.28.sol'

