
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:23:58 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6631.46.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/grafo6631.46.lp
Reading time = 0.14 seconds
: 92031 rows, 2476 columns, 278024 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 92031 rows, 2476 columns and 278024 nonzeros
Model fingerprint: 0x4d4f2491
Variable types: 48 continuous, 2428 integer (2428 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 -0.0000000
Presolve removed 15539 rows and 0 columns
Presolve time: 0.53s
Presolved: 76492 rows, 2476 columns, 231819 nonzeros
Variable types: 0 continuous, 2476 integer (2428 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 2437 rows, 78929 columns, 234295 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23218    3.8700914e+01   0.000000e+00   6.042103e+03      5s
   45998    3.8685260e+01   0.000000e+00   7.635865e+01     10s
   48616    3.9000000e+01   0.000000e+00   0.000000e+00     11s
   48616    3.9000000e+01   0.000000e+00   0.000000e+00     11s
   48616    3.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 3.900000e+01, 48616 iterations, 10.04 seconds (8.28 work units)
Total elapsed time = 23.87s (DegenMoves)
Total elapsed time = 28.94s (DegenMoves)

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

     0     0   39.00000    0  785    3.00000   39.00000  1200%     -   30s
H    0     0                       5.0000000   39.00000   680%     -   30s
H    0     0                       7.0000000   39.00000   457%     -   34s
     0     0          -    0         7.00000   39.00000   457%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 23
  Clique: 12
  MIR: 83
  Zero half: 41
  RLT: 43

Explored 1 nodes (74927 simplex iterations) in 50.08 seconds (43.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 7 5 3 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 3.900000000000e+01, gap 457.1429%

Wrote result file './lp_solutions/grafo6631.46.sol'

