
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:26:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5651.41.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/grafo5651.41.lp
Reading time = 0.23 seconds
: 115111 rows, 2415 columns, 347418 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 115111 rows, 2415 columns and 347418 nonzeros
Model fingerprint: 0xac930188
Variable types: 49 continuous, 2366 integer (2366 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 32038 rows and 30 columns
Presolve time: 1.04s
Presolved: 83073 rows, 2385 columns, 251779 nonzeros
Variable types: 0 continuous, 2385 integer (2336 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2385 rows, 85458 columns, 254164 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17639    5.2932294e+01   0.000000e+00   2.160523e+04      5s
   35189    5.2914397e+01   0.000000e+00   3.268737e+03     10s
   51217    5.2912088e+01   0.000000e+00   3.630956e+02     15s
   56953    5.3000000e+01   0.000000e+00   0.000000e+00     17s
   56953    5.3000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.300000e+01, 56953 iterations, 15.54 seconds (10.95 work units)
Total elapsed time = 41.73s (DegenMoves)

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

     0     0   53.00000    0 1071   12.00000   53.00000   342%     -   50s

Explored 1 nodes (76813 simplex iterations) in 50.04 seconds (45.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 1 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.300000000000e+01, gap 341.6667%

Wrote result file './lp_solutions/grafo5651.41.sol'

