
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 05:54:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5500.37.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/grafo5500.37.lp
Reading time = 0.18 seconds
: 109245 rows, 1956 columns, 329374 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 109245 rows, 1956 columns and 329374 nonzeros
Model fingerprint: 0x20e093ad
Variable types: 44 continuous, 1912 integer (1912 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 -0.0000000
Presolve removed 36737 rows and 33 columns
Presolve time: 0.90s
Presolved: 72508 rows, 1923 columns, 219484 nonzeros
Variable types: 0 continuous, 1923 integer (1879 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 1923 rows, 74431 columns, 221407 nonzeros


Root relaxation: objective 4.100000e+01, 2565 iterations, 0.65 seconds (0.75 work units)
Total elapsed time = 8.88s (DegenMoves)

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

     0     0   41.00000    0  591    8.00000   41.00000   413%     -    9s
     0     0   41.00000    0  911    8.00000   41.00000   412%     -   32s
     0     0   41.00000    0  922    8.00000   41.00000   412%     -   41s
     0     0          -    0         8.00000   41.00000   412%     -   50s

Cutting planes:
  Gomory: 5
  Cover: 4
  Clique: 25
  MIR: 125
  GUB cover: 1
  Zero half: 47
  RLT: 71
  BQP: 4

Explored 1 nodes (27472 simplex iterations) in 50.07 seconds (42.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.100000000000e+01, gap 412.5000%

Wrote result file './lp_solutions/grafo5500.37.sol'

