
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:16:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5426.40.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/grafo5426.40.lp
Reading time = 0.11 seconds
: 70318 rows, 2038 columns, 212567 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 70318 rows, 2038 columns and 212567 nonzeros
Model fingerprint: 0xc9b01feb
Variable types: 42 continuous, 1996 integer (1996 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 8.0000000
Presolve removed 17941 rows and 48 columns
Presolve time: 0.48s
Presolved: 52377 rows, 1990 columns, 159255 nonzeros
Variable types: 0 continuous, 1990 integer (1948 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 1987 rows, 54364 columns, 161245 nonzeros


Root relaxation: objective 4.000000e+01, 1712 iterations, 0.34 seconds (0.33 work units)

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

     0     0   40.00000    0  461   13.00000   40.00000   208%     -    4s
H    0     0                      17.0000000   40.00000   135%     -    4s
     0     0   40.00000    0  757   17.00000   40.00000   135%     -   16s
     0     0   40.00000    0  743   17.00000   40.00000   135%     -   16s
H    0     0                      18.0000000   40.00000   122%     -   19s
     0     0   40.00000    0  542   18.00000   40.00000   122%     -   42s
     0     0   40.00000    0  497   18.00000   40.00000   122%     -   43s
     0     0   40.00000    0  670   18.00000   40.00000   122%     -   50s

Cutting planes:
  Cover: 38
  Clique: 13
  MIR: 107
  StrongCG: 2
  GUB cover: 1
  Zero half: 46
  RLT: 59

Explored 1 nodes (47574 simplex iterations) in 50.08 seconds (45.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 18 17 13 8 

Time limit reached
Best objective 1.800000000000e+01, best bound 4.000000000000e+01, gap 122.2222%

Wrote result file './lp_solutions/grafo5426.40.sol'

