
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:55:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2975.40.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/grafo2975.40.lp
Reading time = 0.12 seconds
: 72382 rows, 1888 columns, 218592 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 72382 rows, 1888 columns and 218592 nonzeros
Model fingerprint: 0x0af44fa3
Variable types: 41 continuous, 1847 integer (1847 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 4.0000000
Presolve removed 17510 rows and 15 columns
Presolve time: 0.47s
Presolved: 54872 rows, 1873 columns, 166294 nonzeros
Variable types: 0 continuous, 1873 integer (1832 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1873 rows, 56745 columns, 168167 nonzeros


Root relaxation: objective 3.800000e+01, 1855 iterations, 0.31 seconds (0.32 work units)

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

     0     0   38.00000    0  340   11.00000   38.00000   245%     -    3s
H    0     0                      12.0000000   38.00000   217%     -    4s
H    0     0                      13.0000000   38.00000   192%     -    4s
     0     0   38.00000    0  550   13.00000   38.00000   192%     -    9s
     0     0   38.00000    0  530   13.00000   38.00000   192%     -    9s
H    0     0                      15.0000000   38.00000   153%     -   25s
     0     0   38.00000    0  377   15.00000   38.00000   153%     -   25s
     0     0   38.00000    0  419   15.00000   38.00000   153%     -   26s
     0     0   38.00000    0  394   15.00000   38.00000   153%     -   36s
     0     0   38.00000    0  355   15.00000   38.00000   153%     -   37s
     0     0   38.00000    0  432   15.00000   38.00000   153%     -   46s
     0     0   38.00000    0  410   15.00000   38.00000   153%     -   46s
     0     0   38.00000    0  447   15.00000   38.00000   153%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 15
  Clique: 16
  MIR: 108
  Zero half: 22
  RLT: 52
  BQP: 2

Explored 1 nodes (54263 simplex iterations) in 50.08 seconds (46.34 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 15 13 12 ... 4

Time limit reached
Best objective 1.500000000000e+01, best bound 3.800000000000e+01, gap 153.3333%

Wrote result file './lp_solutions/grafo2975.40.sol'

