
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:51:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6077.47.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/grafo6077.47.lp
Reading time = 0.12 seconds
: 69290 rows, 2403 columns, 209683 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 69290 rows, 2403 columns and 209683 nonzeros
Model fingerprint: 0xa1abf454
Variable types: 45 continuous, 2358 integer (2358 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 5104 rows and 46 columns
Presolve time: 0.48s
Presolved: 64186 rows, 2357 columns, 194539 nonzeros
Variable types: 0 continuous, 2357 integer (2312 binary)
Root relaxation presolved: 2348 rows, 66534 columns, 196896 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23054    4.3939540e+01   0.000000e+00   1.584449e+01      5s
   25385    4.4000000e+01   0.000000e+00   0.000000e+00      6s
   25385    4.4000000e+01   0.000000e+00   0.000000e+00      6s
   25385    4.4000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.400000e+01, 25385 iterations, 5.12 seconds (3.31 work units)
Total elapsed time = 11.21s (DegenMoves)

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

     0     0   44.00000    0  442          -   44.00000      -     -   12s
     0     0   44.00000    0  724          -   44.00000      -     -   23s
     0     0   44.00000    0  690          -   44.00000      -     -   25s
H    0     0                      15.0000000   44.00000   193%     -   29s
     0     0   44.00000    0  659   15.00000   44.00000   193%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 40
  Cover: 17
  Clique: 10
  MIR: 101
  GUB cover: 1
  Zero half: 31
  RLT: 47
  BQP: 2
  PSD: 1

Explored 1 nodes (53382 simplex iterations) in 50.08 seconds (30.33 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 15 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.400000000000e+01, gap 193.3333%

Wrote result file './lp_solutions/grafo6077.47.sol'

