
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:43:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9861.39.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/grafo9861.39.lp
Reading time = 0.19 seconds
: 122328 rows, 2345 columns, 369122 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 122328 rows, 2345 columns and 369122 nonzeros
Model fingerprint: 0x80d31357
Variable types: 50 continuous, 2295 integer (2295 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 36220 rows and 33 columns
Presolve time: 0.92s
Presolved: 86108 rows, 2312 columns, 260845 nonzeros
Variable types: 0 continuous, 2312 integer (2262 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2309 rows, 88417 columns, 263157 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20064    4.9954883e+01   0.000000e+00   1.090458e+05      5s
   42883    4.9932573e+01   0.000000e+00   4.977475e+03     10s
   65995    4.9928830e+01   0.000000e+00   4.009109e+00     15s
   68331    5.0000000e+01   0.000000e+00   0.000000e+00     16s
   68331    5.0000000e+01   0.000000e+00   0.000000e+00     16s
   68331    5.0000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.000000e+01, 68331 iterations, 14.36 seconds (12.29 work units)
Total elapsed time = 32.94s (DegenMoves)
Total elapsed time = 35.20s (DegenMoves)

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

     0     0   50.00000    0  611    8.00000   50.00000   525%     -   35s
H    0     0                      10.0000000   50.00000   400%     -   35s
     0     0          -    0        10.00000   50.00000   400%     -   50s

Cutting planes:
  Gomory: 42
  Cover: 42
  Clique: 19
  MIR: 99
  StrongCG: 1
  GUB cover: 5
  Zero half: 45
  RLT: 40

Explored 1 nodes (92892 simplex iterations) in 50.02 seconds (49.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.000000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo9861.39.sol'

