
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:34:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3253.44.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/grafo3253.44.lp
Reading time = 0.16 seconds
: 84608 rows, 2111 columns, 255312 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 84608 rows, 2111 columns and 255312 nonzeros
Model fingerprint: 0x60f2b8ce
Variable types: 41 continuous, 2070 integer (2070 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 20354 rows and 11 columns
Presolve time: 0.69s
Presolved: 64254 rows, 2100 columns, 194630 nonzeros
Variable types: 0 continuous, 2100 integer (2059 binary)
Root relaxation presolved: 2096 rows, 66350 columns, 196730 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20865    3.9791792e+01   0.000000e+00   2.332986e+03      5s
   24594    4.0000000e+01   0.000000e+00   0.000000e+00      6s
   24594    4.0000000e+01   0.000000e+00   0.000000e+00      6s
   24594    4.0000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.000000e+01, 24594 iterations, 5.09 seconds (3.20 work units)
Total elapsed time = 11.75s (DegenMoves)
Total elapsed time = 16.34s (DegenMoves)

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

     0     0   40.00000    0  473          -   40.00000      -     -   18s
H    0     0                      13.0000000   40.00000   208%     -   18s
     0     0   40.00000    0  596   13.00000   40.00000   208%     -   27s
H    0     0                      15.0000000   40.00000   167%     -   28s
     0     0   40.00000    0  628   15.00000   40.00000   167%     -   28s
     0     0   40.00000    0  478   15.00000   40.00000   167%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 64
  Cover: 15
  Clique: 11
  MIR: 106
  StrongCG: 1
  GUB cover: 1
  Zero half: 24
  RLT: 65
  BQP: 1

Explored 1 nodes (57144 simplex iterations) in 50.10 seconds (38.54 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 13 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.000000000000e+01, gap 166.6667%

Wrote result file './lp_solutions/grafo3253.44.sol'

