
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:57:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo506.43.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/grafo506.43.lp
Reading time = 0.14 seconds
: 88113 rows, 2137 columns, 265930 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 88113 rows, 2137 columns and 265930 nonzeros
Model fingerprint: 0x235856c8
Variable types: 43 continuous, 2094 integer (2094 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 1.0000000
Presolve removed 21776 rows and 18 columns
Presolve time: 0.60s
Presolved: 66337 rows, 2119 columns, 200974 nonzeros
Variable types: 0 continuous, 2119 integer (2076 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2119 rows, 68456 columns, 203093 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   28634    3.8810176e+01   0.000000e+00   2.365972e+02      5s
   32652    3.9000000e+01   0.000000e+00   0.000000e+00      6s
   32652    3.9000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 3.900000e+01, 32652 iterations, 5.00 seconds (4.14 work units)
Total elapsed time = 12.89s (DegenMoves)

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

     0     0   39.00000    0  430   11.00000   39.00000   255%     -   14s
     0     0   39.00000    0  715   11.00000   39.00000   255%     -   21s
     0     0   39.00000    0  686   11.00000   39.00000   255%     -   23s
H    0     0                      13.0000000   39.00000   200%     -   50s
H    0     0                      14.0000000   39.00000   179%     -   50s
     0     0   39.00000    0  519   14.00000   39.00000   179%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 36
  Cover: 14
  Clique: 15
  MIR: 126
  Zero half: 49
  RLT: 52

Explored 1 nodes (70211 simplex iterations) in 50.11 seconds (49.69 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 13 11 1 

Time limit reached
Best objective 1.400000000000e+01, best bound 3.900000000000e+01, gap 178.5714%

Wrote result file './lp_solutions/grafo506.43.sol'

