
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 00:29:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo357.14.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/grafo357.14.lp
Reading time = 0.39 seconds
: 232505 rows, 589 columns, 697975 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 232505 rows, 589 columns and 697975 nonzeros
Model fingerprint: 0xb6bf8b38
Variable types: 20 continuous, 569 integer (569 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 120742 rows and 0 columns
Presolve time: 1.75s
Presolved: 111763 rows, 589 columns, 335986 nonzeros
Variable types: 0 continuous, 589 integer (569 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 589 rows, 112352 columns, 336575 nonzeros


Starting sifting (using dual simplex for sub-problems)...

    Iter     Pivots    Primal Obj      Dual Obj        Time
       0        172    -infinity     -1.0000310e+00      2s
       1       2046  -1.2209403e+02  -1.0196703e+01      2s
       2       2829  -5.0508731e+01  -1.3357352e+01      3s

Sifting complete


Root relaxation: objective 2.000000e+01, 3400 iterations, 0.57 seconds (0.48 work units)
Total elapsed time = 6.30s (DegenMoves)

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

     0     0   20.00000    0  215    3.00000   20.00000   567%     -    8s
H    0     0                       5.0000000   20.00000   300%     -    8s
     0     0   20.00000    0  288    5.00000   20.00000   300%     -   13s
     0     0   20.00000    0  285    5.00000   20.00000   300%     -   14s
     0     0   20.00000    0  145    5.00000   20.00000   300%     -   24s
     0     0   20.00000    0  122    5.00000   20.00000   300%     -   25s
     0     0   20.00000    0  188    5.00000   20.00000   300%     -   30s
     0     0   20.00000    0  144    5.00000   20.00000   300%     -   32s
     0     0   20.00000    0  148    5.00000   20.00000   300%     -   38s
     0     0   20.00000    0  141    5.00000   20.00000   300%     -   40s
     0     0   20.00000    0  256    5.00000   20.00000   300%     -   46s
     0     0   20.00000    0  170    5.00000   20.00000   300%     -   47s
     0     0   20.00000    0  258    5.00000   20.00000   300%     -   50s

Cutting planes:
  Cover: 26
  Clique: 18
  MIR: 55
  StrongCG: 3
  Zero half: 85
  RLT: 38
  BQP: 1

Explored 1 nodes (24374 simplex iterations) in 50.05 seconds (55.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 5 3 

Time limit reached
Best objective 5.000000000000e+00, best bound 2.000000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo357.14.sol'

