
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:37:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1299.47.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/grafo1299.47.lp
Reading time = 0.29 seconds
: 172560 rows, 2529 columns, 519603 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 172560 rows, 2529 columns and 519603 nonzeros
Model fingerprint: 0x05c288cd
Variable types: 46 continuous, 2483 integer (2483 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 60776 rows and 6 columns
Presolve time: 1.46s
Presolved: 111784 rows, 2523 columns, 337537 nonzeros
Variable types: 0 continuous, 2523 integer (2477 binary)
Root relaxation presolved: 2520 rows, 114304 columns, 340060 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14072    5.9475268e+01   0.000000e+00   2.888679e+05      5s
   29087    5.3823009e+01   0.000000e+00   5.113942e+04     10s
   43367    5.3796369e+01   0.000000e+00   4.678384e+03     15s
   55206    5.4000000e+01   0.000000e+00   0.000000e+00     19s
   55206    5.4000000e+01   0.000000e+00   0.000000e+00     19s
   55206    5.4000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.400000e+01, 55206 iterations, 17.28 seconds (9.04 work units)
Total elapsed time = 34.82s (DegenMoves)
Total elapsed time = 36.47s (DegenMoves)

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

     0     0   54.00000    0  464          -   54.00000      -     -   38s
H    0     0                       4.0000000   54.00000  1250%     -   40s
     0     0          -    0         4.00000   54.00000  1250%     -   50s

Cutting planes:
  Gomory: 31
  Cover: 44
  Clique: 44
  MIR: 172
  StrongCG: 1
  GUB cover: 4
  Zero half: 98
  RLT: 93
  BQP: 8

Explored 1 nodes (71287 simplex iterations) in 50.05 seconds (38.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.400000000000e+01, gap 1250.0000%

Wrote result file './lp_solutions/grafo1299.47.sol'

