
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:56:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3244.39.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/grafo3244.39.lp
Reading time = 0.13 seconds
: 78339 rows, 2016 columns, 236719 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 78339 rows, 2016 columns and 236719 nonzeros
Model fingerprint: 0x460715f1
Variable types: 44 continuous, 1972 integer (1972 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 18750 rows and 6 columns
Presolve time: 0.47s
Presolved: 59589 rows, 2010 columns, 180793 nonzeros
Variable types: 0 continuous, 2010 integer (1966 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2001 rows, 61590 columns, 182803 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27820    3.7959683e+01   0.000000e+00   1.304798e+04      5s
   43601    3.8000000e+01   0.000000e+00   0.000000e+00      8s
   43601    3.8000000e+01   0.000000e+00   0.000000e+00      8s
   43601    3.8000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 3.800000e+01, 43601 iterations, 7.24 seconds (6.20 work units)
Total elapsed time = 14.99s (DegenMoves)
Total elapsed time = 15.52s (DegenMoves)

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

     0     0   38.00000    0  414    8.00000   38.00000   375%     -   16s
H    0     0                       9.0000000   38.00000   322%     -   16s
H    0     0                      10.0000000   38.00000   280%     -   17s
     0     0   38.00000    0  740   10.00000   38.00000   280%     -   27s
     0     0   38.00000    0  730   10.00000   38.00000   280%     -   28s
     0     0   38.00000    0  522   10.00000   38.00000   280%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 27
  Cover: 11
  Clique: 18
  MIR: 116
  StrongCG: 1
  Zero half: 43
  RLT: 55
  BQP: 3

Explored 1 nodes (78357 simplex iterations) in 50.07 seconds (46.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.800000000000e+01, gap 280.0000%

Wrote result file './lp_solutions/grafo3244.39.sol'

