
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:44:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7498.41.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/grafo7498.41.lp
Reading time = 0.34 seconds
: 168966 rows, 2423 columns, 509121 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 168966 rows, 2423 columns and 509121 nonzeros
Model fingerprint: 0x36cacba5
Variable types: 50 continuous, 2373 integer (2373 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 58564 rows and 30 columns
Presolve time: 1.73s
Presolved: 110402 rows, 2393 columns, 333733 nonzeros
Variable types: 0 continuous, 2393 integer (2343 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2393 rows, 112795 columns, 336126 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14151    4.4819695e+01   0.000000e+00   2.530283e+05      5s
   32008    4.3747433e+01   0.000000e+00   1.109201e+04     10s
   45622    4.4000000e+01   0.000000e+00   0.000000e+00     14s
   45622    4.4000000e+01   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 4.400000e+01, 45622 iterations, 12.03 seconds (7.24 work units)
Total elapsed time = 26.31s (DegenMoves)
Total elapsed time = 36.60s (DegenMoves)

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

     0     0   44.00000    0  488   10.00000   44.00000   340%     -   38s
H    0     0                      12.0000000   44.00000   267%     -   38s
     0     0          -    0        12.00000   44.00000   267%     -   50s

Cutting planes:
  Gomory: 26
  Cover: 27
  Clique: 29
  MIR: 187
  StrongCG: 1
  GUB cover: 6
  Zero half: 50
  RLT: 55
  BQP: 6

Explored 1 nodes (64686 simplex iterations) in 50.02 seconds (47.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 10 

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

Wrote result file './lp_solutions/grafo7498.41.sol'

