
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:05:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3753.40.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/grafo3753.40.lp
Reading time = 0.24 seconds
: 147376 rows, 2347 columns, 444250 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 147376 rows, 2347 columns and 444250 nonzeros
Model fingerprint: 0x6b874f97
Variable types: 49 continuous, 2298 integer (2298 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 49622 rows and 14 columns
Presolve time: 0.98s
Presolved: 97754 rows, 2333 columns, 295690 nonzeros
Variable types: 0 continuous, 2333 integer (2284 binary)
Found heuristic solution: objective 14.0000000
Root relaxation presolved: 2318 rows, 100072 columns, 298023 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20646    5.1813447e+01   0.000000e+00   3.063256e+05      5s
   45132    5.1764969e+01   0.000000e+00   2.344473e+03     10s
   51648    5.2000000e+01   0.000000e+00   0.000000e+00     11s
   51648    5.2000000e+01   0.000000e+00   0.000000e+00     11s
   51648    5.2000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.200000e+01, 51648 iterations, 10.22 seconds (8.11 work units)
Total elapsed time = 22.46s (DegenMoves)
Total elapsed time = 26.40s (DegenMoves)

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

     0     0   52.00000    0  547   14.00000   52.00000   271%     -   27s
     0     0   52.00000    0  832   14.00000   52.00000   271%     -   45s
     0     0   52.00000    0  793   14.00000   52.00000   271%     -   46s

Cutting planes:
  Gomory: 2
  Lift-and-project: 27
  Cover: 12
  Clique: 20
  MIR: 157
  GUB cover: 1
  Zero half: 37
  RLT: 30

Explored 1 nodes (75123 simplex iterations) in 50.30 seconds (53.24 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 14 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.200000000000e+01, gap 271.4286%

Wrote result file './lp_solutions/grafo3753.40.sol'

