
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:45:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7527.41.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/grafo7527.41.lp
Reading time = 0.34 seconds
: 184724 rows, 2516 columns, 556422 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 184724 rows, 2516 columns and 556422 nonzeros
Model fingerprint: 0xd5daf81a
Variable types: 50 continuous, 2466 integer (2466 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 67618 rows and 24 columns
Presolve time: 1.83s
Presolved: 117106 rows, 2492 columns, 353962 nonzeros
Variable types: 0 continuous, 2492 integer (2442 binary)
Root relaxation presolved: 2489 rows, 119595 columns, 356454 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13773    6.7499056e+01   0.000000e+00   1.215192e+05      5s
   31354    5.3862553e+01   0.000000e+00   1.586528e+05     10s
   49323    5.3791805e+01   0.000000e+00   1.121758e+04     15s
   65643    5.3781602e+01   0.000000e+00   8.542566e+02     20s
   73702    5.4000000e+01   0.000000e+00   0.000000e+00     22s
   73702    5.4000000e+01   0.000000e+00   0.000000e+00     22s
   73702    5.4000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.400000e+01, 73702 iterations, 20.30 seconds (12.08 work units)
Total elapsed time = 40.90s (DegenMoves)
Total elapsed time = 45.56s (DegenMoves)

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

     0     0   54.00000    0  547          -   54.00000      -     -   46s
H    0     0                       5.0000000   54.00000   980%     -   46s
H    0     0                       8.0000000   54.00000   575%     -   46s
H    0     0                      10.0000000   54.00000   440%     -   46s
     0     0          -    0        10.00000   54.00000   440%     -   50s

Cutting planes:
  Gomory: 23
  Cover: 47
  Clique: 36
  MIR: 153
  StrongCG: 1
  GUB cover: 8
  Zero half: 86
  RLT: 69
  BQP: 5

Explored 1 nodes (87743 simplex iterations) in 50.04 seconds (38.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 8 5 

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

Wrote result file './lp_solutions/grafo7527.41.sol'

