
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:11:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1618.47.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/grafo1618.47.lp
Reading time = 0.19 seconds
: 93771 rows, 2769 columns, 283723 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 93771 rows, 2769 columns and 283723 nonzeros
Model fingerprint: 0x77870daa
Variable types: 51 continuous, 2718 integer (2718 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 15232 rows and 47 columns
Presolve time: 0.64s
Presolved: 78539 rows, 2722 columns, 238419 nonzeros
Variable types: 0 continuous, 2722 integer (2671 binary)
Root relaxation presolved: 2706 rows, 81245 columns, 241141 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16812    4.8963403e+01   0.000000e+00   3.538621e+04      5s
   33740    4.8947380e+01   0.000000e+00   6.766423e+03     10s
   48500    4.8943429e+01   0.000000e+00   1.169800e+02     15s
   51283    4.9000000e+01   0.000000e+00   0.000000e+00     16s
   51283    4.9000000e+01   0.000000e+00   0.000000e+00     16s
   51283    4.9000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.900000e+01, 51283 iterations, 15.21 seconds (10.64 work units)
Total elapsed time = 25.36s (DegenMoves)

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

     0     0   49.00000    0  386          -   49.00000      -     -   25s
H    0     0                      13.0000000   49.00000   277%     -   27s
     0     0   49.00000    0  769   13.00000   49.00000   277%     -   37s
     0     0   49.00000    0  736   13.00000   49.00000   277%     -   38s
     0     0   49.00000    0  742   13.00000   49.00000   277%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 42
  Cover: 13
  Clique: 10
  MIR: 140
  Zero half: 15
  RLT: 56
  BQP: 4

Explored 1 nodes (71987 simplex iterations) in 50.04 seconds (36.48 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 13 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.900000000000e+01, gap 276.9231%

Wrote result file './lp_solutions/grafo1618.47.sol'

