
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:52:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6855.45.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/grafo6855.45.lp
Reading time = 0.19 seconds
: 80460 rows, 2458 columns, 243421 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 80460 rows, 2458 columns and 243421 nonzeros
Model fingerprint: 0xd2bcd8e3
Variable types: 49 continuous, 2409 integer (2409 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 8793 rows and 1 columns
Presolve time: 0.44s
Presolved: 71667 rows, 2457 columns, 217385 nonzeros
Variable types: 0 continuous, 2457 integer (2408 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2433 rows, 74100 columns, 219842 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24401    3.8702370e+01   0.000000e+00   6.534327e+03      5s
   45414    3.9000000e+01   0.000000e+00   0.000000e+00      9s
   45414    3.9000000e+01   0.000000e+00   0.000000e+00      9s
   45414    3.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.900000e+01, 45414 iterations, 8.87 seconds (7.34 work units)
Total elapsed time = 17.05s (DegenMoves)

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

     0     0   39.00000    0  501    7.00000   39.00000   457%     -   17s
H    0     0                       8.0000000   39.00000   387%     -   17s
H    0     0                      10.0000000   39.00000   290%     -   17s
     0     0   39.00000    0  855   10.00000   39.00000   290%     -   30s
H    0     0                      11.0000000   39.00000   255%     -   31s
     0     0   39.00000    0  746   11.00000   39.00000   255%     -   31s
     0     0   39.00000    0  689   11.00000   39.00000   255%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 21
  Cover: 11
  Clique: 13
  MIR: 118
  StrongCG: 1
  Zero half: 53
  RLT: 85
  BQP: 2

Explored 1 nodes (75564 simplex iterations) in 50.11 seconds (41.31 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 11 10 8 7 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.900000000000e+01, gap 254.5455%

Wrote result file './lp_solutions/grafo6855.45.sol'

