
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:35:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6155.39.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/grafo6155.39.lp
Reading time = 0.14 seconds
: 82507 rows, 2015 columns, 249176 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 82507 rows, 2015 columns and 249176 nonzeros
Model fingerprint: 0xc7e9a50d
Variable types: 44 continuous, 1971 integer (1971 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 5.0000000
Presolve removed 21671 rows and 25 columns
Presolve time: 0.58s
Presolved: 60836 rows, 1990 columns, 184577 nonzeros
Variable types: 0 continuous, 1990 integer (1946 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1981 rows, 62817 columns, 186567 nonzeros


Root relaxation: objective 4.000000e+01, 1837 iterations, 0.38 seconds (0.39 work units)

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

     0     0   40.00000    0  515   11.00000   40.00000   264%     -    4s
H    0     0                      13.0000000   40.00000   208%     -    4s
H    0     0                      14.0000000   39.00000   179%     -   12s
     0     0   39.00000    0  756   14.00000   39.00000   179%     -   12s
     0     0   39.00000    0  720   14.00000   39.00000   179%     -   14s
H    0     0                      15.0000000   39.00000   160%     -   31s
     0     0   39.00000    0  434   15.00000   39.00000   160%     -   31s
     0     0   39.00000    0  416   15.00000   39.00000   160%     -   32s
     0     0   39.00000    0  569   15.00000   39.00000   160%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 39
  Clique: 8
  MIR: 73
  StrongCG: 1
  GUB cover: 2
  Zero half: 67
  RLT: 52
  BQP: 1

Explored 1 nodes (46211 simplex iterations) in 50.08 seconds (46.90 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 15 14 13 ... 5

Time limit reached
Best objective 1.500000000000e+01, best bound 3.900000000000e+01, gap 160.0000%

Wrote result file './lp_solutions/grafo6155.39.sol'

