
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:32:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6962.40.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/grafo6962.40.lp
Reading time = 0.18 seconds
: 109272 rows, 2334 columns, 329891 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 109272 rows, 2334 columns and 329891 nonzeros
Model fingerprint: 0xbf4a477a
Variable types: 49 continuous, 2285 integer (2285 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]
Found heuristic solution: objective 4.0000000
Presolve removed 29807 rows and 28 columns
Presolve time: 0.80s
Presolved: 79465 rows, 2306 columns, 240871 nonzeros
Variable types: 0 continuous, 2306 integer (2257 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2303 rows, 81768 columns, 243177 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23292    5.0724176e+01   0.000000e+00   8.030305e+04      5s
   42839    5.1000000e+01   0.000000e+00   0.000000e+00      9s
   42839    5.1000000e+01   0.000000e+00   0.000000e+00      9s
   42839    5.1000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.100000e+01, 42839 iterations, 8.20 seconds (6.81 work units)
Total elapsed time = 20.15s (DegenMoves)

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

     0     0   51.00000    0  632    9.00000   51.00000   467%     -   21s
H    0     0                      10.0000000   51.00000   410%     -   21s
     0     0   51.00000    0 1055   10.00000   51.00000   410%     -   41s
     0     0   51.00000    0  934   10.00000   51.00000   410%     -   43s
     0     0          -    0        10.00000   51.00000   410%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 20
  Cover: 8
  Clique: 18
  MIR: 124
  Zero half: 24
  RLT: 71
  BQP: 2

Explored 1 nodes (67406 simplex iterations) in 50.02 seconds (47.34 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 10 9 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.100000000000e+01, gap 410.0000%

Wrote result file './lp_solutions/grafo6962.40.sol'

