
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:12:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5805.42.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/grafo5805.42.lp
Reading time = 0.14 seconds
: 85829 rows, 2251 columns, 259309 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 85829 rows, 2251 columns and 259309 nonzeros
Model fingerprint: 0x718cba92
Variable types: 46 continuous, 2205 integer (2205 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 19497 rows and 39 columns
Presolve time: 0.58s
Presolved: 66332 rows, 2212 columns, 201343 nonzeros
Variable types: 0 continuous, 2212 integer (2166 binary)
Root relaxation presolved: 2209 rows, 68541 columns, 203555 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24876    4.1742025e+01   0.000000e+00   1.174118e+04      5s
   41453    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   41453    4.2000000e+01   0.000000e+00   0.000000e+00      8s
   41453    4.2000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.200000e+01, 41453 iterations, 7.58 seconds (5.94 work units)
Total elapsed time = 15.09s (DegenMoves)

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

     0     0   42.00000    0  334          -   42.00000      -     -   17s
H    0     0                      11.0000000   42.00000   282%     -   18s
H    0     0                      14.0000000   42.00000   200%     -   18s
     0     0   42.00000    0  692   14.00000   42.00000   200%     -   26s
     0     0   42.00000    0  636   14.00000   42.00000   200%     -   27s
H    0     0                      15.0000000   42.00000   180%     -   49s
     0     0   42.00000    0  559   15.00000   42.00000   180%     -   49s
     0     0          -    0        15.00000   42.00000   180%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 3
  Clique: 8
  MIR: 52
  GUB cover: 1
  Zero half: 2
  RLT: 29

Explored 1 nodes (78827 simplex iterations) in 50.08 seconds (47.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 15 14 11 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.200000000000e+01, gap 180.0000%

Wrote result file './lp_solutions/grafo5805.42.sol'

