
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:42:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5716.40.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/grafo5716.40.lp
Reading time = 0.19 seconds
: 91878 rows, 2367 columns, 277745 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 91878 rows, 2367 columns and 277745 nonzeros
Model fingerprint: 0x741b14fb
Variable types: 49 continuous, 2318 integer (2318 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 4.0000000
Presolve removed 21663 rows and 35 columns
Presolve time: 0.76s
Presolved: 70215 rows, 2332 columns, 213422 nonzeros
Variable types: 0 continuous, 2332 integer (2283 binary)
Found heuristic solution: objective 15.0000000
Root relaxation presolved: 2332 rows, 72547 columns, 215754 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17568    4.6743621e+01   0.000000e+00   4.898707e+04      5s
   36048    4.6707967e+01   0.000000e+00   1.119244e+03     10s
   40526    4.7000000e+01   0.000000e+00   0.000000e+00     11s
   40526    4.7000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 4.700000e+01, 40526 iterations, 10.65 seconds (6.60 work units)
Total elapsed time = 20.90s (DegenMoves)

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

     0     0   47.00000    0  601   15.00000   47.00000   213%     -   23s
H    0     0                      16.0000000   47.00000   194%     -   23s
H    0     0                      18.0000000   47.00000   161%     -   29s
     0     0   47.00000    0  972   18.00000   47.00000   161%     -   50s

Cutting planes:
  Gomory: 37
  Cover: 30
  Clique: 9
  MIR: 128
  StrongCG: 2
  GUB cover: 9
  Zero half: 42
  RLT: 56

Explored 1 nodes (62607 simplex iterations) in 50.25 seconds (33.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 18 16 15 4 

Time limit reached
Best objective 1.800000000000e+01, best bound 4.700000000000e+01, gap 161.1111%

Wrote result file './lp_solutions/grafo5716.40.sol'

