
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:27:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6641.40.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/grafo6641.40.lp
Reading time = 0.18 seconds
: 109951 rows, 2384 columns, 332024 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 109951 rows, 2384 columns and 332024 nonzeros
Model fingerprint: 0x8d46fbde
Variable types: 50 continuous, 2334 integer (2334 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 28875 rows and 24 columns
Presolve time: 0.78s
Presolved: 81076 rows, 2360 columns, 245830 nonzeros
Variable types: 0 continuous, 2360 integer (2310 binary)
Root relaxation presolved: 2357 rows, 83433 columns, 248190 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20029    5.0719355e+01   0.000000e+00   5.515892e+04      5s
   43652    5.0684343e+01   0.000000e+00   3.606100e+03     10s
   64198    5.1000000e+01   0.000000e+00   0.000000e+00     15s
   64198    5.1000000e+01   0.000000e+00   0.000000e+00     15s
   64198    5.1000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.100000e+01, 64198 iterations, 13.69 seconds (12.22 work units)
Total elapsed time = 27.85s (DegenMoves)
Total elapsed time = 30.10s (DegenMoves)

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

     0     0   51.00000    0  638          -   51.00000      -     -   30s
H    0     0                       7.0000000   51.00000   629%     -   30s
H    0     0                      10.0000000   51.00000   410%     -   30s
     0     0          -    0        10.00000   51.00000   410%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 39
  Clique: 15
  MIR: 104
  StrongCG: 1
  GUB cover: 7
  Zero half: 113
  RLT: 54
  BQP: 2

Explored 1 nodes (90102 simplex iterations) in 50.01 seconds (50.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 7 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.100000000000e+01, gap 410.0000%

Wrote result file './lp_solutions/grafo6641.40.sol'

