
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:49:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5417.44.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/grafo5417.44.lp
Reading time = 0.12 seconds
: 75166 rows, 2387 columns, 227429 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 75166 rows, 2387 columns and 227429 nonzeros
Model fingerprint: 0x90c5e1b4
Variable types: 48 continuous, 2339 integer (2339 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 9122 rows and 41 columns
Presolve time: 0.53s
Presolved: 66044 rows, 2346 columns, 200621 nonzeros
Variable types: 0 continuous, 2346 integer (2298 binary)
Root relaxation presolved: 2340 rows, 68384 columns, 202967 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24820    3.8951438e+01   0.000000e+00   3.241600e+04      5s
   38646    3.9000000e+01   0.000000e+00   0.000000e+00      8s
   38646    3.9000000e+01   0.000000e+00   0.000000e+00      8s
   38646    3.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 3.900000e+01, 38646 iterations, 7.20 seconds (6.50 work units)
Total elapsed time = 22.80s (DegenMoves)
Total elapsed time = 35.15s (DegenMoves)

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

     0     0   39.00000    0  540          -   39.00000      -     -   39s
H    0     0                       6.0000000   39.00000   550%     -   39s
H    0     0                       9.0000000   39.00000   333%     -   39s
H    0     0                      10.0000000   39.00000   290%     -   39s
H    0     0                      12.0000000   39.00000   225%     -   44s
     0     0          -    0        12.00000   39.00000   225%     -   50s

Cutting planes:
  Gomory: 25
  Cover: 31
  MIR: 163
  StrongCG: 2
  GUB cover: 9
  Zero half: 67
  RLT: 42

Explored 1 nodes (77584 simplex iterations) in 50.09 seconds (52.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 10 9 6 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.900000000000e+01, gap 225.0000%

Wrote result file './lp_solutions/grafo5417.44.sol'

