
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:44:50 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7271.41.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/grafo7271.41.lp
Reading time = 0.15 seconds
: 93210 rows, 2418 columns, 281777 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 93210 rows, 2418 columns and 281777 nonzeros
Model fingerprint: 0x6472905c
Variable types: 50 continuous, 2368 integer (2368 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 18795 rows and 33 columns
Presolve time: 0.64s
Presolved: 74415 rows, 2385 columns, 225868 nonzeros
Variable types: 0 continuous, 2385 integer (2335 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2385 rows, 76800 columns, 228253 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21123    4.8943955e+01   0.000000e+00   2.863929e+04      5s
   43131    4.8926847e+01   0.000000e+00   3.345109e+04     10s
   64777    4.8920557e+01   0.000000e+00   3.218906e+03     15s
   74371    4.9000000e+01   0.000000e+00   0.000000e+00     17s
   74371    4.9000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.900000e+01, 74371 iterations, 16.52 seconds (15.10 work units)
Total elapsed time = 31.33s (DegenMoves)
Total elapsed time = 35.54s (DegenMoves)

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

     0     0   49.00000    0  651    7.00000   49.00000   600%     -   36s
H    0     0                       8.0000000   49.00000   512%     -   37s
H    0     0                      11.0000000   49.00000   345%     -   39s
     0     0          -    0        11.00000   49.00000   345%     -   50s

Cutting planes:
  Gomory: 32
  Cover: 32
  Clique: 17
  MIR: 85
  GUB cover: 10
  Zero half: 44
  RLT: 31
  BQP: 2

Explored 1 nodes (99735 simplex iterations) in 50.05 seconds (49.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 8 7 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.900000000000e+01, gap 345.4545%

Wrote result file './lp_solutions/grafo7271.41.sol'

