
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:56:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5880.38.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/grafo5880.38.lp
Reading time = 0.16 seconds
: 100123 rows, 2042 columns, 302066 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 100123 rows, 2042 columns and 302066 nonzeros
Model fingerprint: 0x36e94339
Variable types: 42 continuous, 2000 integer (2000 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 42698 rows and 68 columns
Presolve time: 0.64s
Presolved: 57425 rows, 1974 columns, 174363 nonzeros
Variable types: 0 continuous, 1974 integer (1932 binary)
Root relaxation presolved: 1969 rows, 59394 columns, 176337 nonzeros


Root relaxation: objective 4.900000e+01, 2326 iterations, 0.64 seconds (0.71 work units)
Total elapsed time = 8.38s (DegenMoves)
Total elapsed time = 10.33s (DegenMoves)

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

     0     0   49.00000    0  551          -   49.00000      -     -   10s
H    0     0                      17.0000000   49.00000   188%     -   13s
     0     0   49.00000    0  680   17.00000   49.00000   188%     -   19s
H    0     0                      19.0000000   49.00000   158%     -   19s
     0     0   49.00000    0  677   19.00000   49.00000   158%     -   20s
     0     0   49.00000    0  683   19.00000   49.00000   158%     -   48s
     0     0   49.00000    0  649   19.00000   49.00000   158%     -   49s

Cutting planes:
  Gomory: 1
  Cover: 28
  Clique: 15
  MIR: 120
  StrongCG: 2
  GUB cover: 1
  Zero half: 6
  RLT: 31
  BQP: 4

Explored 1 nodes (42808 simplex iterations) in 50.35 seconds (47.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 19 17 

Time limit reached
Best objective 1.900000000000e+01, best bound 4.900000000000e+01, gap 157.8947%

Wrote result file './lp_solutions/grafo5880.38.sol'

