
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:16:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3786.41.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/grafo3786.41.lp
Reading time = 0.34 seconds
: 178412 rows, 1955 columns, 536639 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 178412 rows, 1955 columns and 536639 nonzeros
Model fingerprint: 0x0aa439fa
Variable types: 39 continuous, 1916 integer (1916 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 81414 rows and 12 columns
Presolve time: 1.56s
Presolved: 96998 rows, 1943 columns, 292751 nonzeros
Variable types: 0 continuous, 1943 integer (1904 binary)
Root relaxation presolved: 1934 rows, 98932 columns, 294694 nonzeros


Root relaxation: objective 4.100000e+01, 2596 iterations, 1.59 seconds (1.48 work units)
Total elapsed time = 15.68s (DegenMoves)

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

     0     0   41.00000    0  607          -   41.00000      -     -   19s
H    0     0                       4.0000000   41.00000   925%     -   19s
H    0     0                      11.0000000   41.00000   273%     -   19s
     0     0   41.00000    0  850   11.00000   41.00000   273%     -   39s
H    0     0                      12.0000000   41.00000   242%     -   40s
     0     0   41.00000    0  768   12.00000   41.00000   242%     -   42s
     0     0          -    0        12.00000   41.00000   242%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 44
  Cover: 11
  Clique: 33
  MIR: 55
  GUB cover: 1
  Zero half: 35
  RLT: 52
  BQP: 3

Explored 1 nodes (20930 simplex iterations) in 50.06 seconds (44.13 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 11 4 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo3786.41.sol'

