
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:18:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3908.41.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/grafo3908.41.lp
Reading time = 0.30 seconds
: 140436 rows, 2653 columns, 423776 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 140436 rows, 2653 columns and 423776 nonzeros
Model fingerprint: 0x1759c4c3
Variable types: 52 continuous, 2601 integer (2601 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 41943 rows and 9 columns
Presolve time: 1.18s
Presolved: 98493 rows, 2644 columns, 298535 nonzeros
Variable types: 0 continuous, 2644 integer (2592 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2631 rows, 101124 columns, 301179 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18247    5.7991553e+01   0.000000e+00   1.155682e+05      5s
   34670    5.7952590e+01   0.000000e+00   4.717872e+04     10s
   49790    5.7945240e+01   0.000000e+00   6.985044e+03     15s
   64910    5.7943087e+01   0.000000e+00   3.166028e+02     20s
   71177    5.8000000e+01   0.000000e+00   0.000000e+00     22s
   71177    5.8000000e+01   0.000000e+00   0.000000e+00     22s
   71177    5.8000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.800000e+01, 71177 iterations, 21.08 seconds (13.17 work units)
Total elapsed time = 44.28s (DegenMoves)
Total elapsed time = 46.70s (DegenMoves)

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

     0     0   58.00000    0  576   10.00000   58.00000   480%     -   49s
H    0     0                      12.0000000   58.00000   383%     -   49s

Cutting planes:
  Cover: 67
  Clique: 13
  MIR: 2
  GUB cover: 2

Explored 1 nodes (88392 simplex iterations) in 50.04 seconds (39.35 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 2 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.800000000000e+01, gap 383.3333%

Wrote result file './lp_solutions/grafo3908.41.sol'

