
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:41:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7421.40.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/grafo7421.40.lp
Reading time = 0.24 seconds
: 153291 rows, 2413 columns, 462013 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 153291 rows, 2413 columns and 462013 nonzeros
Model fingerprint: 0x5928067c
Variable types: 49 continuous, 2364 integer (2364 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 53836 rows and 19 columns
Presolve time: 0.99s
Presolved: 99455 rows, 2394 columns, 300967 nonzeros
Variable types: 0 continuous, 2394 integer (2345 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2385 rows, 101840 columns, 303361 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20547    5.3793981e+01   0.000000e+00   4.127046e+04      5s
   45305    5.3743402e+01   0.000000e+00   3.452900e+02     10s
   48336    5.4000000e+01   0.000000e+00   0.000000e+00     11s
   48336    5.4000000e+01   0.000000e+00   0.000000e+00     11s
   48336    5.4000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.400000e+01, 48336 iterations, 9.49 seconds (7.88 work units)
Total elapsed time = 27.45s (DegenMoves)
Total elapsed time = 31.28s (DegenMoves)

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

     0     0   54.00000    0  648    7.00000   54.00000   671%     -   31s
H    0     0                      10.0000000   54.00000   440%     -   32s
     0     0          -    0        10.00000   54.00000   440%     -   50s

Cutting planes:
  Gomory: 40
  Cover: 43
  Clique: 28
  MIR: 104
  GUB cover: 1
  Zero half: 32
  RLT: 46

Explored 1 nodes (70649 simplex iterations) in 50.02 seconds (49.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 7 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.400000000000e+01, gap 440.0000%

Wrote result file './lp_solutions/grafo7421.40.sol'

