
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:43:13 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3593.44.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/grafo3593.44.lp
Reading time = 0.29 seconds
: 181508 rows, 2726 columns, 546940 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 181508 rows, 2726 columns and 546940 nonzeros
Model fingerprint: 0xc52df10a
Variable types: 52 continuous, 2674 integer (2674 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 61086 rows and 21 columns
Presolve time: 1.28s
Presolved: 120422 rows, 2705 columns, 364135 nonzeros
Variable types: 0 continuous, 2705 integer (2653 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2690 rows, 123112 columns, 366840 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20408    5.1953571e+01   0.000000e+00   1.916165e+05      5s
   41420    5.1927667e+01   0.000000e+00   3.068789e+03     10s
   58687    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   58687    5.2000000e+01   0.000000e+00   0.000000e+00     15s
   58687    5.2000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.200000e+01, 58687 iterations, 13.32 seconds (12.03 work units)
Total elapsed time = 36.69s (DegenMoves)
Total elapsed time = 46.86s (DegenMoves)

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

     0     0   52.00000    0  685   12.00000   52.00000   333%     -   50s

Explored 1 nodes (80079 simplex iterations) in 50.05 seconds (62.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.200000000000e+01, gap 333.3333%

Wrote result file './lp_solutions/grafo3593.44.sol'

