
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:01:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3727.39.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/grafo3727.39.lp
Reading time = 0.38 seconds
: 238759 rows, 2155 columns, 718032 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 238759 rows, 2155 columns and 718032 nonzeros
Model fingerprint: 0xe017ddc5
Variable types: 44 continuous, 2111 integer (2111 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 -0.0000000
Presolve removed 106137 rows and 6 columns
Presolve time: 1.62s
Presolved: 132622 rows, 2149 columns, 399946 nonzeros
Variable types: 0 continuous, 2149 integer (2105 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2137 rows, 134759 columns, 402095 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20085    6.2974394e+01   0.000000e+00   4.190679e+05      5s
   47028    5.4837207e+01   0.000000e+00   8.558491e+04     10s
   75252    5.4817824e+01   0.000000e+00   6.946062e+03     15s
   79072    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   79072    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   79072    5.5000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.500000e+01, 79072 iterations, 14.05 seconds (10.58 work units)
Total elapsed time = 33.01s (DegenMoves)
Total elapsed time = 35.01s (DegenMoves)

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

     0     0   55.00000    0  580   12.00000   55.00000   358%     -   37s
     0     0          -    0        12.00000   55.00000   358%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 50
  Clique: 56
  MIR: 168
  GUB cover: 1
  Zero half: 64
  RLT: 103
  BQP: 7

Explored 1 nodes (95453 simplex iterations) in 50.03 seconds (52.10 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.500000000000e+01, gap 358.3333%

Wrote result file './lp_solutions/grafo3727.39.sol'

