
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:52:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5887.44.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/grafo5887.44.lp
Reading time = 0.12 seconds
: 77970 rows, 2251 columns, 235606 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 77970 rows, 2251 columns and 235606 nonzeros
Model fingerprint: 0xf67ef165
Variable types: 44 continuous, 2207 integer (2207 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 14631 rows and 21 columns
Presolve time: 0.48s
Presolved: 63339 rows, 2230 columns, 192188 nonzeros
Variable types: 0 continuous, 2230 integer (2186 binary)
Root relaxation presolved: 2230 rows, 65569 columns, 194418 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   29171    4.4966670e+01   0.000000e+00   3.931469e+03      5s
   43988    4.5000000e+01   0.000000e+00   0.000000e+00      8s
   43988    4.5000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.500000e+01, 43988 iterations, 7.47 seconds (6.48 work units)
Total elapsed time = 14.40s (DegenMoves)
Total elapsed time = 15.03s (DegenMoves)

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

     0     0   45.00000    0  408          -   45.00000      -     -   15s
H    0     0                      13.0000000   45.00000   246%     -   16s
H    0     0                      14.0000000   45.00000   221%     -   16s
     0     0   45.00000    0  650   14.00000   45.00000   221%     -   20s
     0     0   45.00000    0  608   14.00000   45.00000   221%     -   21s
     0     0   45.00000    0  385   14.00000   45.00000   221%     -   32s
H    0     0                      15.0000000   45.00000   200%     -   32s
     0     0   45.00000    0  345   15.00000   45.00000   200%     -   32s
     0     0   45.00000    0  369   15.00000   45.00000   200%     -   43s
     0     0   45.00000    0  566   15.00000   45.00000   200%     -   44s
     0     0          -    0        15.00000   45.00000   200%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 23
  Clique: 7
  MIR: 214
  StrongCG: 1
  GUB cover: 7
  Zero half: 57
  RLT: 64

Explored 1 nodes (85668 simplex iterations) in 50.09 seconds (43.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 14 13 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.500000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo5887.44.sol'

