
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:34:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6879.41.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/grafo6879.41.lp
Reading time = 0.12 seconds
: 77110 rows, 2091 columns, 232970 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 77110 rows, 2091 columns and 232970 nonzeros
Model fingerprint: 0xd9bf5b79
Variable types: 44 continuous, 2047 integer (2047 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 16828 rows and 19 columns
Presolve time: 0.49s
Presolved: 60282 rows, 2072 columns, 182885 nonzeros
Variable types: 0 continuous, 2072 integer (2028 binary)
Root relaxation presolved: 2069 rows, 62351 columns, 184957 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27625    3.9763234e+01   0.000000e+00   3.872143e+03      5s
   35110    4.0000000e+01   0.000000e+00   0.000000e+00      6s
   35110    4.0000000e+01   0.000000e+00   0.000000e+00      6s
   35110    4.0000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.000000e+01, 35110 iterations, 5.75 seconds (4.89 work units)
Total elapsed time = 14.62s (DegenMoves)
Total elapsed time = 15.49s (DegenMoves)

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

     0     0   40.00000    0  419          -   40.00000      -     -   15s
H    0     0                       4.0000000   40.00000   900%     -   17s
     0     0   40.00000    0  676    4.00000   40.00000   900%     -   21s
H    0     0                      10.0000000   40.00000   300%     -   22s
     0     0   40.00000    0  638   10.00000   40.00000   300%     -   22s
     0     0   40.00000    0  571   10.00000   40.00000   300%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 18
  Cover: 14
  Clique: 10
  MIR: 86
  Zero half: 82
  RLT: 49
  BQP: 1

Explored 1 nodes (77172 simplex iterations) in 50.08 seconds (52.99 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 4 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.000000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo6879.41.sol'

