
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:26:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11428.39.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/grafo11428.39.lp
Reading time = 0.15 seconds
: 90693 rows, 2296 columns, 274206 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 90693 rows, 2296 columns and 274206 nonzeros
Model fingerprint: 0x38f8ef46
Variable types: 47 continuous, 2249 integer (2249 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 24664 rows and 34 columns
Presolve time: 0.62s
Presolved: 66029 rows, 2262 columns, 200886 nonzeros
Variable types: 0 continuous, 2262 integer (2215 binary)
Root relaxation presolved: 2256 rows, 68285 columns, 203148 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23875    4.4940731e+01   0.000000e+00   2.707132e+04      5s
   41165    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   41165    4.5000000e+01   0.000000e+00   0.000000e+00      9s
   41165    4.5000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.500000e+01, 41165 iterations, 7.78 seconds (6.26 work units)
Total elapsed time = 15.54s (DegenMoves)

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

     0     0   45.00000    0  371          -   45.00000      -     -   16s
H    0     0                      13.0000000   45.00000   246%     -   17s
     0     0   45.00000    0  608   13.00000   45.00000   246%     -   22s
H    0     0                      14.0000000   45.00000   221%     -   22s
     0     0   45.00000    0  544   14.00000   45.00000   221%     -   23s
     0     0   45.00000    0  469   14.00000   45.00000   221%     -   50s

Cutting planes:
  Gomory: 10
  Lift-and-project: 42
  Cover: 17
  Clique: 4
  MIR: 103
  StrongCG: 2
  GUB cover: 1
  Zero half: 18
  RLT: 47
  Relax-and-lift: 1
  BQP: 1

Explored 1 nodes (78401 simplex iterations) in 50.09 seconds (47.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 13 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.500000000000e+01, gap 221.4286%

Wrote result file './lp_solutions/grafo11428.39.sol'

