
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:07:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6055.43.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/grafo6055.43.lp
Reading time = 0.16 seconds
: 101755 rows, 2575 columns, 307610 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 101755 rows, 2575 columns and 307610 nonzeros
Model fingerprint: 0xcd45ec6d
Variable types: 51 continuous, 2524 integer (2524 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 21136 rows and 45 columns
Presolve time: 0.66s
Presolved: 80619 rows, 2530 columns, 244548 nonzeros
Variable types: 0 continuous, 2530 integer (2479 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2530 rows, 83149 columns, 247078 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21246    4.8688298e+01   0.000000e+00   3.816512e+04      5s
   43686    4.8661636e+01   0.000000e+00   1.214444e+03     10s
   56417    4.9000000e+01   0.000000e+00   0.000000e+00     13s
   56417    4.9000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 4.900000e+01, 56417 iterations, 12.11 seconds (9.72 work units)
Total elapsed time = 21.13s (DegenMoves)

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

     0     0   49.00000    0  419   11.00000   49.00000   345%     -   21s
     0     0   49.00000    0  870   11.00000   49.00000   345%     -   33s
     0     0   49.00000    0  863   11.00000   49.00000   345%     -   34s
     0     0   49.00000    0  904   11.00000   49.00000   345%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 25
  Cover: 7
  Clique: 15
  MIR: 139
  GUB cover: 1
  Zero half: 16
  RLT: 44
  BQP: 2

Explored 1 nodes (82626 simplex iterations) in 50.02 seconds (47.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 11 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.900000000000e+01, gap 345.4545%

Wrote result file './lp_solutions/grafo6055.43.sol'

