
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:29:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7514.43.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/grafo7514.43.lp
Reading time = 0.16 seconds
: 100898 rows, 2532 columns, 304914 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 100898 rows, 2532 columns and 304914 nonzeros
Model fingerprint: 0x3b5a6cc7
Variable types: 51 continuous, 2481 integer (2481 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 19939 rows and 30 columns
Presolve time: 0.71s
Presolved: 80959 rows, 2502 columns, 245478 nonzeros
Variable types: 0 continuous, 2502 integer (2451 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2502 rows, 83461 columns, 247980 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21823    5.2765273e+01   0.000000e+00   2.850400e+04      5s
   45025    5.2734782e+01   0.000000e+00   1.682255e+03     10s
   51786    5.3000000e+01   0.000000e+00   0.000000e+00     12s
   51786    5.3000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.300000e+01, 51786 iterations, 10.70 seconds (8.36 work units)
Total elapsed time = 22.76s (DegenMoves)
Total elapsed time = 26.12s (DegenMoves)

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

     0     0   53.00000    0  692    5.00000   53.00000   960%     -   26s
H    0     0                       8.0000000   53.00000   562%     -   26s
     0     0   53.00000    0 1004    8.00000   53.00000   562%     -   46s
     0     0   53.00000    0 1013    8.00000   53.00000   562%     -   49s

Cutting planes:
  Cover: 23
  Clique: 12
  MIR: 188
  StrongCG: 1
  GUB cover: 3
  Zero half: 4
  RLT: 34

Explored 1 nodes (81724 simplex iterations) in 50.04 seconds (50.64 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.300000000000e+01, gap 562.5000%

Wrote result file './lp_solutions/grafo7514.43.sol'

