
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:35:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7110.40.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/grafo7110.40.lp
Reading time = 0.13 seconds
: 82135 rows, 2344 columns, 248532 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 82135 rows, 2344 columns and 248532 nonzeros
Model fingerprint: 0xa29bfb9f
Variable types: 50 continuous, 2294 integer (2294 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 13377 rows and 35 columns
Presolve time: 0.59s
Presolved: 68758 rows, 2309 columns, 208857 nonzeros
Variable types: 0 continuous, 2309 integer (2259 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2309 rows, 71067 columns, 211166 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23128    4.4934776e+01   0.000000e+00   3.252686e+04      5s
   44864    4.4921937e+01   0.000000e+00   2.069670e+03     10s
   66826    4.4917653e+01   0.000000e+00   2.787085e+02     15s
   73456    4.5000000e+01   0.000000e+00   0.000000e+00     17s
   73456    4.5000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 4.500000e+01, 73456 iterations, 15.88 seconds (14.62 work units)
Total elapsed time = 26.58s (DegenMoves)

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

     0     0   45.00000    0  491    9.00000   45.00000   400%     -   28s
H    0     0                      12.0000000   45.00000   275%     -   28s
     0     0   45.00000    0  784   12.00000   45.00000   275%     -   41s
     0     0   45.00000    0  763   12.00000   45.00000   275%     -   41s
     0     0          -    0        12.00000   45.00000   275%     -   50s

Cutting planes:
  Lift-and-project: 27
  Cover: 9
  Clique: 6
  MIR: 133
  GUB cover: 2
  Zero half: 25
  RLT: 48

Explored 1 nodes (97583 simplex iterations) in 50.08 seconds (44.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 9 4 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.500000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo7110.40.sol'

