
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:40:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7718.40.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/grafo7718.40.lp
Reading time = 0.11 seconds
: 70712 rows, 2153 columns, 213903 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 70712 rows, 2153 columns and 213903 nonzeros
Model fingerprint: 0x6033919a
Variable types: 46 continuous, 2107 integer (2107 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 12440 rows and 41 columns
Presolve time: 0.47s
Presolved: 58272 rows, 2112 columns, 177137 nonzeros
Variable types: 0 continuous, 2112 integer (2066 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2112 rows, 60384 columns, 179249 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27305    4.4952962e+01   0.000000e+00   3.757478e+03      5s
   39601    4.5000000e+01   0.000000e+00   0.000000e+00      7s
   39601    4.5000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.500000e+01, 39601 iterations, 6.88 seconds (5.78 work units)
Total elapsed time = 15.15s (DegenMoves)

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

     0     0   45.00000    0  660    8.00000   45.00000   462%     -   17s
H    0     0                      10.0000000   45.00000   350%     -   17s
     0     0   44.00000    0  788   10.00000   44.00000   340%     -   27s
     0     0   44.00000    0  753   10.00000   44.00000   340%     -   29s
     0     0   44.00000    0  784   10.00000   44.00000   340%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 35
  Cover: 15
  Clique: 1
  MIR: 109
  StrongCG: 1
  GUB cover: 1
  Zero half: 8
  RLT: 51

Explored 1 nodes (75420 simplex iterations) in 50.07 seconds (43.34 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 4.400000000000e+01, gap 340.0000%

Wrote result file './lp_solutions/grafo7718.40.sol'

