
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:06:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3754.40.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/grafo3754.40.lp
Reading time = 0.11 seconds
: 71254 rows, 1713 columns, 214893 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 71254 rows, 1713 columns and 214893 nonzeros
Model fingerprint: 0x23192e9b
Variable types: 36 continuous, 1677 integer (1677 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 21832 rows and 14 columns
Presolve time: 0.48s
Presolved: 49422 rows, 1699 columns, 149707 nonzeros
Variable types: 0 continuous, 1699 integer (1663 binary)
Root relaxation presolved: 1699 rows, 51121 columns, 151406 nonzeros


Root relaxation: objective 3.500000e+01, 1687 iterations, 0.28 seconds (0.27 work units)
Total elapsed time = 5.14s (DegenMoves)

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

     0     0   35.00000    0  238          -   35.00000      -     -    5s
H    0     0                       5.0000000   35.00000   600%     -    6s
     0     0   35.00000    0  424    5.00000   35.00000   600%     -    7s
H    0     0                       6.0000000   35.00000   483%     -    8s
     0     0   35.00000    0  387    6.00000   35.00000   483%     -    8s
H    0     0                      13.0000000   35.00000   169%     -   12s
H    0     0                      14.0000000   35.00000   150%     -   12s
H    0     0                      15.0000000   35.00000   133%     -   12s
     0     0   35.00000    0  267   15.00000   35.00000   133%     -   12s
H    0     0                      16.0000000   35.00000   119%     -   12s
     0     0   35.00000    0  282   16.00000   35.00000   119%     -   12s
H    0     0                      17.0000000   35.00000   106%     -   21s
     0     0   35.00000    0  258   17.00000   35.00000   106%     -   21s
     0     0   35.00000    0  356   17.00000   35.00000   106%     -   22s
H    0     0                      18.0000000   35.00000  94.4%     -   28s
     0     0   35.00000    0  334   18.00000   35.00000  94.4%     -   29s
     0     0   35.00000    0  327   18.00000   35.00000  94.4%     -   29s
     0     0   34.96667    0  251   18.00000   34.96667  94.3%     -   32s
     0     0   34.96667    0  349   18.00000   34.96667  94.3%     -   33s
     0     0   34.96667    0  312   18.00000   34.96667  94.3%     -   41s
     0     0   34.96667    0  267   18.00000   34.96667  94.3%     -   42s

Cutting planes:
  Gomory: 1
  Cover: 1
  Clique: 6
  MIR: 9
  Zero half: 2
  RLT: 12
  BQP: 3

Explored 1 nodes (54644 simplex iterations) in 50.04 seconds (43.64 work units)
Thread count was 8 (of 8 available processors)

Solution count 8: 18 17 16 ... 5

Time limit reached
Best objective 1.800000000000e+01, best bound 3.400000000000e+01, gap 88.8889%

Wrote result file './lp_solutions/grafo3754.40.sol'

