
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:50:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4092.38.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/grafo4092.38.lp
Reading time = 0.16 seconds
: 100353 rows, 2128 columns, 302939 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 100353 rows, 2128 columns and 302939 nonzeros
Model fingerprint: 0x8f4b205f
Variable types: 46 continuous, 2082 integer (2082 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 32279 rows and 30 columns
Presolve time: 0.75s
Presolved: 68074 rows, 2098 columns, 206669 nonzeros
Variable types: 0 continuous, 2098 integer (2052 binary)
Root relaxation presolved: 2098 rows, 70172 columns, 208767 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24325    4.3750174e+01   0.000000e+00   2.804392e+04      5s
   36824    4.4000000e+01   0.000000e+00   0.000000e+00      7s
   36824    4.4000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.400000e+01, 36824 iterations, 6.50 seconds (4.96 work units)
Total elapsed time = 15.88s (DegenMoves)
Total elapsed time = 24.35s (DegenMoves)
Total elapsed time = 26.78s (DegenMoves)

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

     0     0   44.00000    0  573          -   44.00000      -     -   28s
H    0     0                       9.0000000   44.00000   389%     -   31s
H    0     0                      10.0000000   44.00000   340%     -   31s
     0     0   44.00000    0  784   10.00000   44.00000   340%     -   41s
H    0     0                      12.0000000   44.00000   267%     -   42s
     0     0   44.00000    0  675   12.00000   44.00000   267%     -   45s
     0     0          -    0        12.00000   44.00000   267%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 26
  Cover: 7
  Clique: 14
  MIR: 125
  StrongCG: 1
  Zero half: 32
  RLT: 58
  BQP: 1

Explored 1 nodes (68499 simplex iterations) in 50.07 seconds (49.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 9 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.400000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo4092.38.sol'

