
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:32:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7117.42.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/grafo7117.42.lp
Reading time = 0.15 seconds
: 91928 rows, 2430 columns, 277912 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 91928 rows, 2430 columns and 277912 nonzeros
Model fingerprint: 0xf9dd0756
Variable types: 50 continuous, 2380 integer (2380 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 17610 rows and 26 columns
Presolve time: 0.61s
Presolved: 74318 rows, 2404 columns, 225544 nonzeros
Variable types: 0 continuous, 2404 integer (2354 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2401 rows, 76719 columns, 227948 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22668    4.9942704e+01   0.000000e+00   3.361313e+04      5s
   44773    4.9927603e+01   0.000000e+00   1.288111e+04     10s
   60820    5.0000000e+01   0.000000e+00   0.000000e+00     14s
   60820    5.0000000e+01   0.000000e+00   0.000000e+00     14s
   60820    5.0000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 5.000000e+01, 60820 iterations, 13.07 seconds (11.26 work units)
Total elapsed time = 24.13s (DegenMoves)
Total elapsed time = 26.13s (DegenMoves)

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

     0     0   50.00000    0  439    9.00000   50.00000   456%     -   27s
H    0     0                      13.0000000   50.00000   285%     -   28s
H    0     0                      14.0000000   50.00000   257%     -   37s
     0     0   50.00000    0  627   14.00000   50.00000   257%     -   37s
H    0     0                      15.0000000   50.00000   233%     -   37s
     0     0   50.00000    0  612   15.00000   50.00000   233%     -   38s
     0     0   50.00000    0  701   15.00000   50.00000   233%     -   50s

Cutting planes:
  Gomory: 8
  Lift-and-project: 40
  Cover: 19
  Clique: 4
  MIR: 171
  StrongCG: 1
  GUB cover: 1
  Zero half: 80
  RLT: 57

Explored 1 nodes (89475 simplex iterations) in 50.08 seconds (45.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 15 14 13 ... 4

Time limit reached
Best objective 1.500000000000e+01, best bound 5.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo7117.42.sol'

