
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:20:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7226.38.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/grafo7226.38.lp
Reading time = 0.19 seconds
: 113309 rows, 2212 columns, 341931 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 113309 rows, 2212 columns and 341931 nonzeros
Model fingerprint: 0x7b8029fd
Variable types: 48 continuous, 2164 integer (2164 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 34496 rows and 28 columns
Presolve time: 0.88s
Presolved: 78813 rows, 2184 columns, 238836 nonzeros
Variable types: 0 continuous, 2184 integer (2136 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2184 rows, 80997 columns, 241020 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24420    4.7773432e+01   0.000000e+00   1.543683e+04      5s
   37291    4.8000000e+01   0.000000e+00   0.000000e+00      8s
   37291    4.8000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.800000e+01, 37291 iterations, 6.54 seconds (5.43 work units)
Total elapsed time = 18.96s (DegenMoves)
Total elapsed time = 22.40s (DegenMoves)

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

     0     0   48.00000    0  639    5.00000   48.00000   860%     -   24s
     0     0   48.00000    0  818    5.00000   48.00000   860%     -   37s
     0     0   48.00000    0  807    5.00000   48.00000   860%     -   40s
     0     0          -    0         5.00000   48.00000   860%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 30
  Cover: 14
  Clique: 16
  MIR: 91
  GUB cover: 4
  Zero half: 58
  RLT: 55
  BQP: 2

Explored 1 nodes (63843 simplex iterations) in 50.04 seconds (48.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 4.800000000000e+01, gap 860.0000%

Wrote result file './lp_solutions/grafo7226.38.sol'

