
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:53:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7646.50.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/grafo7646.50.lp
Reading time = 0.21 seconds
: 131034 rows, 3063 columns, 395677 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 131034 rows, 3063 columns and 395677 nonzeros
Model fingerprint: 0x25db8212
Variable types: 54 continuous, 3009 integer (3009 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 24093 rows and 18 columns
Presolve time: 1.04s
Presolved: 106941 rows, 3045 columns, 323834 nonzeros
Variable types: 0 continuous, 3045 integer (2991 binary)
Root relaxation presolved: 3032 rows, 109973 columns, 326879 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16447    5.6678953e+01   0.000000e+00   1.095715e+05      5s
   33776    5.6631848e+01   0.000000e+00   4.251829e+03     10s
   50204    5.6622722e+01   0.000000e+00   3.516457e+03     15s
   62098    5.7000000e+01   0.000000e+00   0.000000e+00     19s
   62098    5.7000000e+01   0.000000e+00   0.000000e+00     19s
   62098    5.7000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.700000e+01, 62098 iterations, 17.80 seconds (12.96 work units)
Total elapsed time = 35.77s (DegenMoves)

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

     0     0   57.00000    0  623          -   57.00000      -     -   38s
H    0     0                       8.0000000   57.00000   612%     -   38s
H    0     0                      10.0000000   57.00000   470%     -   38s
     0     0          -    0        10.00000   57.00000   470%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 34
  Clique: 8
  MIR: 260
  StrongCG: 3
  GUB cover: 1
  Zero half: 82
  RLT: 48
  BQP: 1

Explored 1 nodes (78621 simplex iterations) in 50.04 seconds (38.17 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 5.700000000000e+01, gap 470.0000%

Wrote result file './lp_solutions/grafo7646.50.sol'

