
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:49:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5885.46.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/grafo5885.46.lp
Reading time = 0.21 seconds
: 121369 rows, 2626 columns, 366291 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 121369 rows, 2626 columns and 366291 nonzeros
Model fingerprint: 0x17ad1b9f
Variable types: 50 continuous, 2576 integer (2576 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 28356 rows and 36 columns
Presolve time: 1.17s
Presolved: 93013 rows, 2590 columns, 281689 nonzeros
Variable types: 0 continuous, 2590 integer (2540 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2590 rows, 95603 columns, 284279 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16194    3.9963365e+01   0.000000e+00   9.221174e+04      5s
   34285    3.9939041e+01   0.000000e+00   1.133482e+04     10s
   50267    3.9935787e+01   0.000000e+00   4.796951e+01     15s
   52944    4.0000000e+01   0.000000e+00   0.000000e+00     16s
   52944    4.0000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 4.000000e+01, 52944 iterations, 14.47 seconds (9.57 work units)
Total elapsed time = 34.42s (DegenMoves)
Total elapsed time = 35.28s (DegenMoves)

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

     0     0   40.00000    0  508    6.00000   40.00000   567%     -   35s
H    0     0                       7.0000000   40.00000   471%     -   35s
H    0     0                       8.0000000   40.00000   400%     -   36s
     0     0  postponed    0         8.00000   40.00000   400%     -   50s

Cutting planes:
  Gomory: 38
  Cover: 44
  Clique: 16
  MIR: 123
  GUB cover: 13
  Zero half: 53
  RLT: 46

Explored 1 nodes (71742 simplex iterations) in 50.05 seconds (38.80 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 6 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.000000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo5885.46.sol'

