
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:45:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7446.45.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/grafo7446.45.lp
Reading time = 0.15 seconds
: 93931 rows, 2428 columns, 283704 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 93931 rows, 2428 columns and 283704 nonzeros
Model fingerprint: 0xa334d52a
Variable types: 47 continuous, 2381 integer (2381 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 3.0000000
Presolve removed 19087 rows and 17 columns
Presolve time: 0.59s
Presolved: 74844 rows, 2411 columns, 226843 nonzeros
Variable types: 0 continuous, 2411 integer (2364 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2405 rows, 77249 columns, 229254 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22162    5.0713946e+01   0.000000e+00   6.888532e+03      5s
   45295    5.0699078e+01   0.000000e+00   9.535087e+03     10s
   52087    5.1000000e+01   0.000000e+00   0.000000e+00     12s
   52087    5.1000000e+01   0.000000e+00   0.000000e+00     12s
   52087    5.1000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.100000e+01, 52087 iterations, 10.87 seconds (9.15 work units)
Total elapsed time = 32.53s (DegenMoves)
Total elapsed time = 35.77s (DegenMoves)
Total elapsed time = 40.31s (DegenMoves)

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

     0     0   51.00000    0  887   12.00000   51.00000   325%     -   40s
H    0     0                      14.0000000   51.00000   264%     -   41s
     0     0          -    0        14.00000   51.00000   264%     -   50s

Cutting planes:
  Gomory: 23
  Cover: 22
  Clique: 6
  MIR: 175
  StrongCG: 1
  GUB cover: 2
  Zero half: 44
  RLT: 67

Explored 1 nodes (76816 simplex iterations) in 50.08 seconds (49.48 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 12 3 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.100000000000e+01, gap 264.2857%

Wrote result file './lp_solutions/grafo7446.45.sol'

