
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 04:53:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1964.36.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/grafo1964.36.lp
Reading time = 0.51 seconds
: 312709 rows, 2163 columns, 940085 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 312709 rows, 2163 columns and 940085 nonzeros
Model fingerprint: 0x3b84aba5
Variable types: 46 continuous, 2117 integer (2117 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 147309 rows and 15 columns
Presolve time: 2.40s
Presolved: 165400 rows, 2148 columns, 498431 nonzeros
Variable types: 0 continuous, 2148 integer (2102 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2148 rows, 167548 columns, 500579 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16904    1.1293963e+02   0.000000e+00   1.204489e+06      5s
   45589    6.4981968e+01   0.000000e+00   9.365214e+04     10s
   69367    5.7898503e+01   0.000000e+00   4.593685e+04     15s
   94564    5.7875862e+01   0.000000e+00   7.507122e+03     20s
  119977    5.7869289e+01   0.000000e+00   4.688401e+02     25s
  133781    5.8000000e+01   0.000000e+00   0.000000e+00     28s
  133781    5.8000000e+01   0.000000e+00   0.000000e+00     28s

Root relaxation: objective 5.800000e+01, 133781 iterations, 25.02 seconds (17.98 work units)

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

     0     0   58.00000    0 1382    5.00000   58.00000  1060%     -   50s

Explored 1 nodes (143038 simplex iterations) in 50.06 seconds (42.53 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 5 

Time limit reached
Best objective 5.000000000000e+00, best bound 5.800000000000e+01, gap 1060.0000%

Wrote result file './lp_solutions/grafo1964.36.sol'

