
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:06:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3576.37.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/grafo3576.37.lp
Reading time = 0.18 seconds
: 109687 rows, 1951 columns, 330676 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 109687 rows, 1951 columns and 330676 nonzeros
Model fingerprint: 0x2eb111a8
Variable types: 43 continuous, 1908 integer (1908 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 39469 rows and 4 columns
Presolve time: 0.66s
Presolved: 70218 rows, 1947 columns, 212556 nonzeros
Variable types: 0 continuous, 1947 integer (1904 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 1942 rows, 72160 columns, 214503 nonzeros


Root relaxation: objective 5.100000e+01, 2786 iterations, 1.05 seconds (1.30 work units)
Total elapsed time = 9.80s (DegenMoves)

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

     0     0   51.00000    0  673    4.00000   51.00000  1175%     -   19s
H    0     0                       8.0000000   51.00000   537%     -   19s
     0     0   51.00000    0  916    8.00000   51.00000   537%     -   39s
     0     0   51.00000    0  915    8.00000   51.00000   537%     -   44s
     0     0          -    0         8.00000   51.00000   537%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 10
  Clique: 43
  MIR: 126
  Zero half: 48
  RLT: 99
  BQP: 2

Explored 1 nodes (32098 simplex iterations) in 50.09 seconds (50.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 4 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.100000000000e+01, gap 537.5000%

Wrote result file './lp_solutions/grafo3576.37.sol'

