
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 02:19:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6057.42.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/grafo6057.42.lp
Reading time = 0.22 seconds
: 113554 rows, 2522 columns, 342903 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 113554 rows, 2522 columns and 342903 nonzeros
Model fingerprint: 0x89e02bfa
Variable types: 49 continuous, 2473 integer (2473 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 31207 rows and 21 columns
Presolve time: 0.95s
Presolved: 82347 rows, 2501 columns, 249980 nonzeros
Variable types: 0 continuous, 2501 integer (2452 binary)
Root relaxation presolved: 2501 rows, 84848 columns, 252481 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15397    4.6808267e+01   0.000000e+00   8.533196e+04      5s
   34110    4.6748161e+01   0.000000e+00   5.937442e+03     10s
   51688    4.6743010e+01   0.000000e+00   4.325106e+00     15s
   52339    4.7000000e+01   0.000000e+00   0.000000e+00     15s
   52339    4.7000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 4.700000e+01, 52339 iterations, 14.27 seconds (8.51 work units)
Total elapsed time = 24.79s (DegenMoves)
Total elapsed time = 27.38s (DegenMoves)

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

     0     0   47.00000    0  425          -   47.00000      -     -   28s
H    0     0                      11.0000000   47.00000   327%     -   28s
H    0     0                      16.0000000   47.00000   194%     -   28s
     0     0   47.00000    0  876   16.00000   47.00000   194%     -   44s
     0     0   47.00000    0  896   16.00000   47.00000   194%     -   46s

Cutting planes:
  Gomory: 5
  Lift-and-project: 1
  Cover: 5
  Clique: 14
  MIR: 119
  Zero half: 81
  RLT: 29

Explored 1 nodes (73214 simplex iterations) in 51.13 seconds (37.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 16 11 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.700000000000e+01, gap 193.7500%

Wrote result file './lp_solutions/grafo6057.42.sol'

