
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:36:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1519.44.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/grafo1519.44.lp
Reading time = 0.12 seconds
: 72347 rows, 2262 columns, 218800 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 72347 rows, 2262 columns and 218800 nonzeros
Model fingerprint: 0x92024dd6
Variable types: 45 continuous, 2217 integer (2217 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 10818 rows and 27 columns
Presolve time: 0.49s
Presolved: 61529 rows, 2235 columns, 186823 nonzeros
Variable types: 0 continuous, 2235 integer (2190 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2229 rows, 63758 columns, 189058 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27792    4.0974010e+01   0.000000e+00   1.568970e+01      5s
   28964    4.1000000e+01   0.000000e+00   0.000000e+00      5s
   28964    4.1000000e+01   0.000000e+00   0.000000e+00      5s
   28964    4.1000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.100000e+01, 28964 iterations, 4.67 seconds (4.41 work units)
Total elapsed time = 12.01s (DegenMoves)

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

     0     0   41.00000    0  272    8.00000   41.00000   412%     -   12s
H    0     0                      12.0000000   41.00000   242%     -   12s
     0     0   41.00000    0  480   12.00000   41.00000   242%     -   16s
H    0     0                      15.0000000   41.00000   173%     -   17s
     0     0   41.00000    0  473   15.00000   41.00000   173%     -   17s
     0     0   41.00000    0  465   15.00000   41.00000   173%     -   27s
     0     0   41.00000    0  482   15.00000   41.00000   173%     -   28s
     0     0   41.00000    0  449   15.00000   41.00000   173%     -   39s
H    0     0                      16.0000000   41.00000   156%     -   39s
     0     0   41.00000    0  457   16.00000   41.00000   156%     -   40s
     0     0   41.00000    0  472   16.00000   41.00000   156%     -   48s
     0     0          -    0        16.00000   41.00000   156%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 10
  Clique: 4
  MIR: 46
  StrongCG: 1
  Zero half: 2
  RLT: 29
  PSD: 1

Explored 1 nodes (77292 simplex iterations) in 50.06 seconds (45.96 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 16 15 12 8 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.100000000000e+01, gap 156.2500%

Wrote result file './lp_solutions/grafo1519.44.sol'

