
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:44:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7248.41.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/grafo7248.41.lp
Reading time = 0.32 seconds
: 198092 rows, 2531 columns, 596512 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 198092 rows, 2531 columns and 596512 nonzeros
Model fingerprint: 0xf87bb534
Variable types: 49 continuous, 2482 integer (2482 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 79637 rows and 8 columns
Presolve time: 1.21s
Presolved: 118455 rows, 2523 columns, 358126 nonzeros
Variable types: 0 continuous, 2523 integer (2474 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2517 rows, 120972 columns, 360649 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20437    6.6980515e+01   0.000000e+00   1.622176e+06      5s
   42138    6.0785730e+01   0.000000e+00   7.775810e+04     10s
   64986    6.0755429e+01   0.000000e+00   1.251333e+04     15s
   83210    6.1000000e+01   0.000000e+00   0.000000e+00     19s
   83210    6.1000000e+01   0.000000e+00   0.000000e+00     19s
   83210    6.1000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 6.100000e+01, 83210 iterations, 17.57 seconds (13.82 work units)
Total elapsed time = 35.23s (DegenMoves)
Total elapsed time = 40.42s (DegenMoves)

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

     0     0   61.00000    0  484   13.00000   61.00000   369%     -   41s
     0     0          -    0        13.00000   61.00000   369%     -   50s

Cutting planes:
  Gomory: 43
  Cover: 59
  Clique: 46
  MIR: 167
  StrongCG: 1
  GUB cover: 3
  Zero half: 47
  RLT: 77
  BQP: 3

Explored 1 nodes (102142 simplex iterations) in 50.02 seconds (52.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 3 

Time limit reached
Best objective 1.300000000000e+01, best bound 6.100000000000e+01, gap 369.2308%

Wrote result file './lp_solutions/grafo7248.41.sol'

