
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:39:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5211.40.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/grafo5211.40.lp
Reading time = 0.24 seconds
: 121753 rows, 2388 columns, 367416 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 121753 rows, 2388 columns and 367416 nonzeros
Model fingerprint: 0xeb63b50d
Variable types: 48 continuous, 2340 integer (2340 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 42587 rows and 18 columns
Presolve time: 0.92s
Presolved: 79166 rows, 2370 columns, 240292 nonzeros
Variable types: 0 continuous, 2370 integer (2322 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2370 rows, 81536 columns, 242662 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18561    5.0807076e+01   0.000000e+00   6.904169e+05      5s
   37851    5.0710941e+01   0.000000e+00   1.694933e+04     10s
   57673    5.0690732e+01   0.000000e+00   6.399750e+03     15s
   69190    5.1000000e+01   0.000000e+00   0.000000e+00     18s
   69190    5.1000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.100000e+01, 69190 iterations, 16.91 seconds (9.94 work units)
Total elapsed time = 27.06s (DegenMoves)

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

     0     0   51.00000    0  493   13.00000   51.00000   292%     -   30s
H    0     0                      17.0000000   51.00000   200%     -   30s
     0     0   51.00000    0  626   17.00000   51.00000   200%     -   38s
     0     0   51.00000    0  587   17.00000   51.00000   200%     -   40s
     0     0          -    0        17.00000   51.00000   200%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 40
  Cover: 27
  Clique: 24
  MIR: 165
  StrongCG: 1
  GUB cover: 1
  Zero half: 48
  RLT: 58
  BQP: 4

Explored 1 nodes (90192 simplex iterations) in 50.02 seconds (37.64 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 17 13 6 

Time limit reached
Best objective 1.700000000000e+01, best bound 5.100000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo5211.40.sol'

