
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:23:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6865.42.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/grafo6865.42.lp
Reading time = 0.17 seconds
: 107147 rows, 2224 columns, 323240 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 107147 rows, 2224 columns and 323240 nonzeros
Model fingerprint: 0x1704ca3a
Variable types: 45 continuous, 2179 integer (2179 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 33222 rows and 19 columns
Presolve time: 0.72s
Presolved: 73925 rows, 2205 columns, 223980 nonzeros
Variable types: 0 continuous, 2205 integer (2160 binary)
Root relaxation presolved: 2205 rows, 76130 columns, 226185 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25802    4.4822107e+01   0.000000e+00   1.301533e+04      5s
   32484    4.5000000e+01   0.000000e+00   0.000000e+00      6s
   32484    4.5000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.500000e+01, 32484 iterations, 5.43 seconds (4.24 work units)
Total elapsed time = 11.98s (DegenMoves)
Total elapsed time = 15.48s (DegenMoves)

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

     0     0   45.00000    0  438          -   45.00000      -     -   15s
H    0     0                       6.0000000   45.00000   650%     -   18s
H    0     0                      13.0000000   45.00000   246%     -   18s
H    0     0                      14.0000000   45.00000   221%     -   28s
     0     0   45.00000    0  751   14.00000   45.00000   221%     -   28s
     0     0   45.00000    0  704   14.00000   45.00000   221%     -   31s
     0     0   45.00000    0  745   14.00000   45.00000   221%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 36
  Cover: 9
  Clique: 17
  MIR: 133
  StrongCG: 1
  Zero half: 72
  RLT: 80
  BQP: 8

Explored 1 nodes (62678 simplex iterations) in 50.08 seconds (44.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 13 6 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.500000000000e+01, gap 221.4286%

Wrote result file './lp_solutions/grafo6865.42.sol'

