
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:16:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5892.42.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/grafo5892.42.lp
Reading time = 0.50 seconds
: 267523 rows, 2487 columns, 804792 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 267523 rows, 2487 columns and 804792 nonzeros
Model fingerprint: 0x357e4ad6
Variable types: 48 continuous, 2439 integer (2439 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 156173 rows and 63 columns
Presolve time: 2.26s
Presolved: 111350 rows, 2424 columns, 336740 nonzeros
Variable types: 0 continuous, 2424 integer (2376 binary)
Root relaxation presolved: 2421 rows, 113771 columns, 339164 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14244    5.0036294e+01   0.000000e+00   1.610107e+06      5s
   34017    4.2971766e+01   0.000000e+00   7.419599e+04     10s
   52888    4.2963193e+01   0.000000e+00   2.036115e+03     15s
   65717    4.3000000e+01   0.000000e+00   0.000000e+00     19s
   65717    4.3000000e+01   0.000000e+00   0.000000e+00     19s
   65717    4.3000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 4.300000e+01, 65717 iterations, 16.13 seconds (10.81 work units)
Total elapsed time = 36.49s (DegenMoves)

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

     0     0   43.00000    0  432          -   43.00000      -     -   40s
H    0     0                      10.0000000   43.00000   330%     -   44s
     0     0          -    0        10.00000   43.00000   330%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 47
  Clique: 9
  MIR: 115
  GUB cover: 2
  Zero half: 81
  RLT: 56
  BQP: 6

Explored 1 nodes (81449 simplex iterations) in 50.05 seconds (39.73 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 10 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.300000000000e+01, gap 330.0000%

Wrote result file './lp_solutions/grafo5892.42.sol'

