
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:06:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7281.46.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/grafo7281.46.lp
Reading time = 0.14 seconds
: 83055 rows, 2306 columns, 250840 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 83055 rows, 2306 columns and 250840 nonzeros
Model fingerprint: 0x556d505e
Variable types: 45 continuous, 2261 integer (2261 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 1.0000000
Presolve removed 14282 rows and 34 columns
Presolve time: 0.55s
Presolved: 68773 rows, 2272 columns, 208383 nonzeros
Variable types: 0 continuous, 2272 integer (2227 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2272 rows, 71045 columns, 210655 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25828    4.0836287e+01   0.000000e+00   8.783463e+02      5s
   27923    4.1000000e+01   0.000000e+00   0.000000e+00      5s
   27923    4.1000000e+01   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 4.100000e+01, 27923 iterations, 4.78 seconds (4.07 work units)
Total elapsed time = 11.41s (DegenMoves)

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

     0     0   41.00000    0  378    8.00000   41.00000   412%     -   12s
H    0     0                      10.0000000   41.00000   310%     -   12s
     0     0   41.00000    0  651   10.00000   41.00000   310%     -   19s
     0     0   41.00000    0  644   10.00000   41.00000   310%     -   20s
     0     0   41.00000    0  548   10.00000   41.00000   310%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 31
  Cover: 14
  Clique: 6
  MIR: 156
  GUB cover: 2
  Zero half: 35
  RLT: 62

Explored 1 nodes (68154 simplex iterations) in 50.08 seconds (51.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 8 1 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.100000000000e+01, gap 310.0000%

Wrote result file './lp_solutions/grafo7281.46.sol'

