
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:24:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1842.27.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/grafo1842.27.lp
Reading time = 0.13 seconds
: 78525 rows, 1148 columns, 236478 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 78525 rows, 1148 columns and 236478 nonzeros
Model fingerprint: 0x2c44591d
Variable types: 31 continuous, 1117 integer (1117 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 3.0000000
Presolve removed 37587 rows and 9 columns
Presolve time: 0.50s
Presolved: 40938 rows, 1139 columns, 124096 nonzeros
Variable types: 0 continuous, 1139 integer (1108 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1139 rows, 42077 columns, 125235 nonzeros


Root relaxation: objective 2.900000e+01, 1538 iterations, 0.27 seconds (0.31 work units)
Total elapsed time = 5.52s (DegenMoves)

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

     0     0   29.00000    0  206    7.00000   29.00000   314%     -    7s
H    0     0                      10.0000000   29.00000   190%     -    7s
H    0     0                      11.0000000   29.00000   164%     -    7s
     0     0   29.00000    0  337   11.00000   29.00000   164%     -    9s
     0     0   29.00000    0  312   11.00000   29.00000   164%     -    9s
     0     0   29.00000    0  274   11.00000   29.00000   164%     -   14s
     0     0   29.00000    0  289   11.00000   29.00000   164%     -   15s
     0     0   29.00000    0  323   11.00000   29.00000   164%     -   21s
H    0     0                      12.0000000   29.00000   142%     -   21s
     0     0   29.00000    0  315   12.00000   29.00000   142%     -   21s
     0     0   29.00000    0  288   12.00000   29.00000   142%     -   25s
     0     0   29.00000    0  292   12.00000   29.00000   142%     -   25s
     0     0   29.00000    0  273   12.00000   29.00000   142%     -   29s
     0     0   29.00000    0  260   12.00000   29.00000   142%     -   29s
     0     0   29.00000    0  294   12.00000   29.00000   142%     -   34s
     0     0   29.00000    0  280   12.00000   29.00000   142%     -   35s
     0     2   29.00000    0  258   12.00000   29.00000   142%     -   40s
    32    47   29.00000    8  229   12.00000   29.00000   142%   452   45s
H  193   205                      13.0000000   29.00000   123%   178   49s
   204   244   26.50000   44  169   13.00000   29.00000   123%   171   50s

Cutting planes:
  Cover: 3
  Clique: 28
  MIR: 35
  Zero half: 8
  RLT: 43
  Relax-and-lift: 1
  BQP: 1
  PSD: 1

Explored 243 nodes (84111 simplex iterations) in 50.07 seconds (58.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 13 12 11 ... 3

Time limit reached
Best objective 1.300000000000e+01, best bound 2.900000000000e+01, gap 123.0769%

Wrote result file './lp_solutions/grafo1842.27.sol'

