
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:31:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7107.42.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/grafo7107.42.lp
Reading time = 0.14 seconds
: 87438 rows, 2283 columns, 264193 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 87438 rows, 2283 columns and 264193 nonzeros
Model fingerprint: 0x03a793b4
Variable types: 47 continuous, 2236 integer (2236 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]
Found heuristic solution: objective 2.0000000
Presolve removed 18826 rows and 25 columns
Presolve time: 0.57s
Presolved: 68612 rows, 2258 columns, 208126 nonzeros
Variable types: 0 continuous, 2258 integer (2211 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2258 rows, 70870 columns, 210384 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25104    5.0929276e+01   0.000000e+00   7.405199e+03      5s
   47952    5.0918303e+01   0.000000e+00   4.598339e+02     10s
   53830    5.1000000e+01   0.000000e+00   0.000000e+00     11s
   53830    5.1000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.100000e+01, 53830 iterations, 10.64 seconds (9.99 work units)
Total elapsed time = 18.66s (DegenMoves)
Total elapsed time = 20.36s (DegenMoves)

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

     0     0   51.00000    0  479    5.00000   51.00000   920%     -   20s
H    0     0                       7.0000000   51.00000   629%     -   20s
H    0     0                      10.0000000   51.00000   410%     -   20s
H    0     0                      11.0000000   51.00000   364%     -   22s
     0     0   51.00000    0  820   11.00000   51.00000   364%     -   30s
H    0     0                      13.0000000   51.00000   292%     -   30s
     0     0   51.00000    0  802   13.00000   51.00000   292%     -   31s
     0     0   51.00000    0  845   13.00000   51.00000   292%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 3
  Cover: 19
  Clique: 6
  MIR: 195
  StrongCG: 1
  Zero half: 54
  RLT: 68

Explored 1 nodes (84973 simplex iterations) in 50.06 seconds (45.25 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 13 11 10 ... 2

Time limit reached
Best objective 1.300000000000e+01, best bound 5.100000000000e+01, gap 292.3077%

Wrote result file './lp_solutions/grafo7107.42.sol'

