
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:18:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5973.46.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/grafo5973.46.lp
Reading time = 0.24 seconds
: 155185 rows, 2918 columns, 468148 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 155185 rows, 2918 columns and 468148 nonzeros
Model fingerprint: 0x644735c2
Variable types: 54 continuous, 2864 integer (2864 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 42180 rows and 31 columns
Presolve time: 1.19s
Presolved: 113005 rows, 2887 columns, 342141 nonzeros
Variable types: 0 continuous, 2887 integer (2833 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2881 rows, 115886 columns, 345028 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18404    5.4639263e+01   0.000000e+00   3.745558e+04      5s
   39139    5.4595883e+01   0.000000e+00   3.535617e+03     10s
   57417    5.4590871e+01   0.000000e+00   2.007729e+02     15s
   61361    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   61361    5.5000000e+01   0.000000e+00   0.000000e+00     16s
   61361    5.5000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 5.500000e+01, 61361 iterations, 14.75 seconds (12.02 work units)
Total elapsed time = 33.87s (DegenMoves)
Total elapsed time = 35.13s (DegenMoves)

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

     0     0   55.00000    0  501    9.00000   55.00000   511%     -   35s
H    0     0                      13.0000000   55.00000   323%     -   35s
     0     0          -    0        13.00000   55.00000   323%     -   50s

Cutting planes:
  Gomory: 45
  Cover: 53
  Clique: 20
  MIR: 132
  StrongCG: 2
  GUB cover: 7
  Zero half: 97
  RLT: 52
  BQP: 2

Explored 1 nodes (81912 simplex iterations) in 50.02 seconds (47.85 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 13 9 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.500000000000e+01, gap 323.0769%

Wrote result file './lp_solutions/grafo5973.46.sol'

