Test pulp.tests.test_pulp.HiGHS_CMDTest.test_time_limit_no_solution fails on non-x86 architectures

[musicinmybrain]

Details for the issue

What did you do?

Working on Fedora 42, with the system coin-or-HiGHS package installed, on an architecture other than x86_64, that is, on aarch64, ppc64le, or s390x:

$ python3 --version
Python 3.13.3
$ git clone https://github.com/coin-or/pulp.git
$ cd pulp
$ python3 -m venv _e
$ . _e/bin/activate
(_e) $ pip install -e .
(_e) $ pulptest
Available solvers: ['PULP_CBC_CMD', 'HiGHS_CMD']
Unavailable solvers: {'SASCAS', 'HiGHS', 'COINMP_DLL', 'XPRESS_PY', 'COPT', 'GUROBI', 'CPLEX_CMD', 'GLPK_CMD', 'SAS94', 'SCIP_CMD', 'COIN_CMD', 'CPLEX_PY', 'COPT_DLL', 'MIPCL_CMD', 'CyLP', 'GUROBI_CMD', 'CHOCO_CMD', 'FSCIP_CMD', 'MOSEK', 'PYGLPK', 'SCIP_PY', 'COPT_CMD', 'XPRESS'}
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss....................................................E..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/135cf7dd025d4490ad6c007282988311-pulp.sol"
Set option log_file to "/tmp/135cf7dd025d4490ad6c007282988311-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   135cf7dd025d4490ad6c007282988311-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 135cf7dd025d4490ad6c007282988311-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/135cf7dd025d4490ad6c007282988311-pulp.sol
..............E......ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss......................................................F..Welcome to the CBC MILP Solver 
Version: 2.10.10 
Build Date: Sep 26 2023 

command line - /builddir/pulp/pulp/apis/../solverdir/cbc/linux/arm64/cbc /tmp/36c68f001c7b4a0b8f86047275906e38-pulp.mps -timeMode elapsed -branch -printingOptions all -solution /tmp/36c68f001c7b4a0b8f86047275906e38-pulp.sol (default strategy 1)
At line 2 NAME          MODEL
At line 3 ROWS
At line 9 COLUMNS
At line 20 RHS
At line 25 BOUNDS
At line 29 ENDATA
Problem MODEL has 4 rows, 4 columns and 7 elements
Coin0008I MODEL read with 0 errors
Option for timeMode changed from cpu to elapsed
Presolve 1 (-3) rows, 2 (-2) columns and 2 (-5) elements
0  Obj 51.9 Primal inf 2.099999 (1)
1  Obj 54
Optimal - objective value 54
After Postsolve, objective 54, infeasibilities - dual 0 (0), primal 0 (0)
Optimal objective 54 - 1 iterations time 0.032, Presolve 0.01
Option for printingOptions changed from normal to all
Total time (CPU seconds):       0.05   (Wallclock seconds):       0.05

.......................ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss..ssss
======================================================================
ERROR: test_measuring_solving_time (pulp.tests.test_pulp.HiGHS_CMDTest.test_measuring_solving_time)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 70, in skip_wrapper
    return test_item(test_obj, *args, **kwargs)
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 1311, in test_measuring_solving_time
    status = prob.solve(self.solver)
  File "/builddir/pulp/pulp/pulp.py", line 2007, in solve
    status = solver.actualSolve(self, **kwargs)
  File "/builddir/pulp/pulp/apis/highs_api.py", line 180, in actualSolve
    model_line = [line for line in lines if "Status" in line][0]
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

======================================================================
ERROR: test_time_limit_no_solution (pulp.tests.test_pulp.HiGHS_CMDTest.test_time_limit_no_solution)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 70, in skip_wrapper
    return test_item(test_obj, *args, **kwargs)
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 1340, in test_time_limit_no_solution
    status = prob.solve(self.solver)
  File "/builddir/pulp/pulp/pulp.py", line 2007, in solve
    status = solver.actualSolve(self, **kwargs)
  File "/builddir/pulp/pulp/apis/highs_api.py", line 180, in actualSolve
    model_line = [line for line in lines if "Status" in line][0]
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

======================================================================
FAIL: test_measuring_solving_time (pulp.tests.test_pulp.PULP_CBC_CMDTest.test_measuring_solving_time)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 70, in skip_wrapper
    return test_item(test_obj, *args, **kwargs)
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 1326, in test_measuring_solving_time
    self.assertEqual(status, const.LpStatusOptimal)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: -1 != 1

----------------------------------------------------------------------
Ran 1760 tests in 699.311s

FAILED (failures=1, errors=2, skipped=1602)
Traceback (most recent call last):
  File "/builddir/pulp/_e/bin/pulptest", line 8, in <module>
    sys.exit(pulpTestAll())
             ~~~~~~~~~~~^^
  File "/builddir/pulp/pulp/tests/run_tests.py", line 17, in pulpTestAll
    raise pulp.PulpError("Tests Failed")
pulp.constants.PulpError: Tests Failed

What did you expect to see?

Available solvers: ['PULP_CBC_CMD', 'HiGHS_CMD']
Unavailable solvers: {'GUROBI', 'CPLEX_PY', 'PYGLPK', 'CPLEX_CMD', 'GLPK_CMD', 'COPT', 'COIN_CMD', 'SASCAS', 'CyLP', 'SCIP_CMD', 'GUROBI_CMD', 'XPRESS', 'COPT_DLL', 'XPRESS_PY', 'COPT_CMD', 'COINMP_DLL', 'SAS94', 'MIPCL_CMD', 'CHOCO_CMD', 'SCIP_PY', 'HiGHS', 'MOSEK', 'FSCIP_CMD'}
.Essssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss........................................................Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/84a5c23ae7554e0a96a7a35fa6d66e80-pulp.sol"
Set option log_file to "/tmp/84a5c23ae7554e0a96a7a35fa6d66e80-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   84a5c23ae7554e0a96a7a35fa6d66e80-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 84a5c23ae7554e0a96a7a35fa6d66e80-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.00
Writing the solution to /tmp/84a5c23ae7554e0a96a7a35fa6d66e80-pulp.sol
......................ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss..........................................................Welcome to the CBC MILP Solver 
Version: 2.10.3 
Build Date: Dec 15 2019 

command line - /home/ben/src/forks/pulp/pulp/apis/../solverdir/cbc/linux/i64/cbc /tmp/44adcf4109db4722940a29945144e619-pulp.mps -timeMode elapsed -branch -printingOptions all -solution /tmp/44adcf4109db4722940a29945144e619-pulp.sol (default strategy 1)
At line 2 NAME          MODEL
At line 3 ROWS
At line 9 COLUMNS
At line 20 RHS
At line 25 BOUNDS
At line 29 ENDATA
Problem MODEL has 4 rows, 4 columns and 7 elements
Coin0008I MODEL read with 0 errors
Option for timeMode changed from cpu to elapsed
Presolve 1 (-3) rows, 2 (-2) columns and 2 (-5) elements
0  Obj 51.9 Primal inf 2.099999 (1)
1  Obj 54
Optimal - objective value 54
After Postsolve, objective 54, infeasibilities - dual 0 (0), primal 0 (0)
Optimal objective 54 - 1 iterations time 0.002, Presolve 0.00
Option for printingOptions changed from normal to all
Total time (CPU seconds):       0.00   (Wallclock seconds):       0.00

........................ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss..ssss
======================================================================
ERROR: test_examples (pulp.tests.test_examples.Examples_DocsTests.test_examples)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/ben/src/forks/pulp/pulp/tests/test_examples.py", line 22, in test_examples
    importlib.import_module(_f_name)
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/usr/lib64/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1310, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1324, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'examples'

----------------------------------------------------------------------
Ran 1812 tests in 39.503s

FAILED (errors=1, skipped=1648)
Traceback (most recent call last):
  File "/home/ben/src/forks/pulp/_e/bin/pulptest", line 8, in <module>
    sys.exit(pulpTestAll())
             ~~~~~~~~~~~^^
  File "/home/ben/src/forks/pulp/pulp/tests/run_tests.py", line 17, in pulpTestAll
    raise pulp.PulpError("Tests Failed")
pulp.constants.PulpError: Tests Failed

I haven’t investigated the test_examples failure; it doesn’t appear relevant to this issue.

The test failure I’m really trying to report here is test_time_limit_no_solution; it’s the only one that is failing in python-pulp package in Fedora package builds.

What did you see instead?

Useful extra information

The info below often helps, please fill it out if you're able to. :)

What operating system are you using?

• Windows: ( version: ___ )
• Linux: ( distro: Fedora 42, any architecture but x86_64 )
• Mac OS: ( version: ___ )
• Other: ___

I'm using python version:

• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• Other: 3.13

I installed PuLP via:

• pypi (python -m pip install pulp)
• github (python -m pip install -U git+https://github.com/coin-or/pulp)
• Other: ___ (conda?)

I am a co-maintainer of the python-pulp package in Fedora; I observed this while testing an upgrade of this package from PuLP 2.x to 3.x, then reproduced it in a virtualenv to make a more useful upstream bug report.

I’m happy to try any experiments, on real or emulated hardware, that might help illuminate the issue.

I demonstrated this using a mock chroot, emulating aarch64 on an x86_64 workstation via qemu-user-static. Booting an aarch64 virtual machine with qemu-system-aarch64 and something like virt-manager would work too, and of course the easiest thing is if real physical aarch64 hardware is available. I also saw this on ppc64le and s390x, but not on x86_64.

Did you also

• Tried out the latest github version: https://github.com/coin-or/pulp
• Searched for an existing similar issue: https://github.com/coin-or/pulp/issues?utf8=%E2%9C%93&q=is%3Aissue%20

[musicinmybrain]

I tried this quick hack to get more details:

diff --git a/pulp/apis/highs_api.py b/pulp/apis/highs_api.py
index 6c2f527..f4ce08a 100644
--- a/pulp/apis/highs_api.py
+++ b/pulp/apis/highs_api.py
@@ -74,7 +74,7 @@ class HiGHS_CMD(LpSolver_CMD):
         LpSolver_CMD.__init__(
             self,
             mip=mip,
-            msg=msg,
+            msg=True,
             timeLimit=timeLimit,
             gapRel=gapRel,
             gapAbs=gapAbs,

Available solvers: ['PULP_CBC_CMD', 'HiGHS_CMD']
Unavailable solvers: {'CPLEX_CMD', 'HiGHS', 'MOSEK', 'COPT_CMD', 'CPLEX_PY', 'COIN_CMD', 'MIPCL_CMD', 'SASCAS', 'CyLP', 'PYGLPK', 'CHOCO_CMD', 'COPT', 'FSCIP_CMD', 'SCIP_PY', 'XPRESS', 'COINMP_DLL', 'COPT_DLL', 'GUROBI_CMD', 'GUROBI', 'SCIP_CMD', 'SAS94', 'XPRESS_PY', 'GLPK_CMD'}
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss....Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/cb8aa4ba682e42258c650d3aa28519a5-pulp.sol"
Set option log_file to "/tmp/cb8aa4ba682e42258c650d3aa28519a5-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   cb8aa4ba682e42258c650d3aa28519a5-pulp has 3 rows; 3 cols; 6 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-3); columns 0(-3); elements 0(-6) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : cb8aa4ba682e42258c650d3aa28519a5-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/cb8aa4ba682e42258c650d3aa28519a5-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/95fe46bbeabc4dba857000a44592e86a-pulp.sol"
Set option log_file to "/tmp/95fe46bbeabc4dba857000a44592e86a-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   95fe46bbeabc4dba857000a44592e86a-pulp has 3 rows; 2 cols; 4 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 4e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
Problem status detected on presolve: Infeasible
Model name          : 95fe46bbeabc4dba857000a44592e86a-pulp
Model status        : Infeasible
Objective value     :  0.0000000000e+00
HiGHS run time      :          0.01
Writing the solution to /tmp/95fe46bbeabc4dba857000a44592e86a-pulp.sol
........Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/b253ae0cf27b4b42bf51310ea8bbc653-pulp.sol"
Set option log_file to "/tmp/b253ae0cf27b4b42bf51310ea8bbc653-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   b253ae0cf27b4b42bf51310ea8bbc653-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : b253ae0cf27b4b42bf51310ea8bbc653-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/b253ae0cf27b4b42bf51310ea8bbc653-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/89de3d6ab2464088ba0daf5b24bdedcd-pulp.sol"
Set option log_file to "/tmp/89de3d6ab2464088ba0daf5b24bdedcd-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   89de3d6ab2464088ba0daf5b24bdedcd-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 89de3d6ab2464088ba0daf5b24bdedcd-pulp
Model status        : Optimal
Objective value     :  8.0000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/89de3d6ab2464088ba0daf5b24bdedcd-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/73b4755f4e2647ac8ebef60586b82b43-pulp.sol"
Set option log_file to "/tmp/73b4755f4e2647ac8ebef60586b82b43-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   73b4755f4e2647ac8ebef60586b82b43-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 73b4755f4e2647ac8ebef60586b82b43-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/73b4755f4e2647ac8ebef60586b82b43-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/fd7c9ddac5e2404a89fe6b3625b6307c-pulp.sol"
Set option log_file to "/tmp/fd7c9ddac5e2404a89fe6b3625b6307c-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   fd7c9ddac5e2404a89fe6b3625b6307c-pulp has 4 rows; 7 cols; 10 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [1e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-7); elements 0(-10) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : fd7c9ddac5e2404a89fe6b3625b6307c-pulp
Model status        : Optimal
Objective value     :  5.3000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/fd7c9ddac5e2404a89fe6b3625b6307c-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/d611cad0ca974b228ea6351c883e9500-pulp.sol"
Set option log_file to "/tmp/d611cad0ca974b228ea6351c883e9500-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   d611cad0ca974b228ea6351c883e9500-pulp has 4 rows; 7 cols; 10 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e-01, 4e+00]
  RHS    [1e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-7); elements 0(-10) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : d611cad0ca974b228ea6351c883e9500-pulp
Model status        : Optimal
Objective value     :  5.2900000000e+01
Relative P-D gap    :  1.3431809750e-16
HiGHS run time      :          0.05
Writing the solution to /tmp/d611cad0ca974b228ea6351c883e9500-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/1247d37baf9042ee94933413ed547401-pulp.sol"
Set option log_file to "/tmp/1247d37baf9042ee94933413ed547401-pulp.HiGHS_log"
Set option write_solution_to_file to true
Number of MI entries in BOUNDS section is 1
LP   1247d37baf9042ee94933413ed547401-pulp has 4 rows; 7 cols; 10 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [9e-01, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [1e+00, 1e+01]
Presolving model
Problem status detected on presolve: Primal infeasible or unbounded
Solving the original LP with primal simplex to determine infeasible or unbounded
Using EKK primal simplex solver
  Iteration        Objective     Infeasibilities num(sum)
          0     3.9999963339e+00 Ph1: 2(18); Du: 3(4) 0s
          3     5.3000000000e+01 Pr: 0(0); Du: 1(0.1) 0s
Model name          : 1247d37baf9042ee94933413ed547401-pulp
Model status        : Unbounded
Simplex   iterations: 3
Objective value     :  5.3000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/1247d37baf9042ee94933413ed547401-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/6a453a5e86924d28a8597e95f3b0aa30-pulp.sol"
Set option log_file to "/tmp/6a453a5e86924d28a8597e95f3b0aa30-pulp.HiGHS_log"
Set option write_solution_to_file to true
Number of MI entries in BOUNDS section is 1
LP   6a453a5e86924d28a8597e95f3b0aa30-pulp has 4 rows; 7 cols; 10 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [1e+00, 1e+01]
Presolving model
1 rows, 3 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-7); elements 0(-10) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 6a453a5e86924d28a8597e95f3b0aa30-pulp
Model status        : Optimal
Objective value     :  5.3000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/6a453a5e86924d28a8597e95f3b0aa30-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/044d57a09c16443a89f9009ca1feca03-pulp.sol"
Set option log_file to "/tmp/044d57a09c16443a89f9009ca1feca03-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   044d57a09c16443a89f9009ca1feca03-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 044d57a09c16443a89f9009ca1feca03-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/044d57a09c16443a89f9009ca1feca03-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/795e03c03ab3436a98a5691fa55861cb-pulp.sol"
Set option log_file to "/tmp/795e03c03ab3436a98a5691fa55861cb-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   795e03c03ab3436a98a5691fa55861cb-pulp has 4 rows; 5 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-5); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 795e03c03ab3436a98a5691fa55861cb-pulp
Model status        : Optimal
Objective value     :  0.0000000000e+00
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/795e03c03ab3436a98a5691fa55861cb-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/6bc5a973b8484fa9a62d072976fe1664-pulp.sol"
Set option log_file to "/tmp/6bc5a973b8484fa9a62d072976fe1664-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  6bc5a973b8484fa9a62d072976fe1664-pulp has 3 rows; 3 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve: Optimal

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   64              64                 0.00%        0      0      0         0     0.0s

Solving report
  Model             6bc5a973b8484fa9a62d072976fe1664-pulp
  Status            Optimal
  Primal bound      64
  Dual bound        64
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   feasible
                    64 (objective)
                    0 (bound viol.)
                    0 (int. viol.)
                    0 (row viol.)
  Timing            0.04 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/6bc5a973b8484fa9a62d072976fe1664-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/ba99013f5179468cbb43ae2e7a589c4a-pulp.sol"
Set option log_file to "/tmp/ba99013f5179468cbb43ae2e7a589c4a-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   ba99013f5179468cbb43ae2e7a589c4a-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : ba99013f5179468cbb43ae2e7a589c4a-pulp
Model status        : Optimal
Objective value     :  8.0000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/ba99013f5179468cbb43ae2e7a589c4a-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/9dd9ad2c318d47b28b1636fc9df41499-pulp.sol"
Set option log_file to "/tmp/9dd9ad2c318d47b28b1636fc9df41499-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   9dd9ad2c318d47b28b1636fc9df41499-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 9dd9ad2c318d47b28b1636fc9df41499-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/9dd9ad2c318d47b28b1636fc9df41499-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/bfb39313f6c84a5da9b52806c675addb-pulp.sol"
Set option log_file to "/tmp/bfb39313f6c84a5da9b52806c675addb-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   bfb39313f6c84a5da9b52806c675addb-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : bfb39313f6c84a5da9b52806c675addb-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/bfb39313f6c84a5da9b52806c675addb-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/6c1ba7943c6d425387f6a1777b7c09a9-pulp.sol"
Set option log_file to "/tmp/6c1ba7943c6d425387f6a1777b7c09a9-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   6c1ba7943c6d425387f6a1777b7c09a9-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 6c1ba7943c6d425387f6a1777b7c09a9-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/6c1ba7943c6d425387f6a1777b7c09a9-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/00d137ad27554193bf654bfd87cf7e03-pulp.sol"
Set option log_file to "/tmp/00d137ad27554193bf654bfd87cf7e03-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  00d137ad27554193bf654bfd87cf7e03-pulp has 3 rows; 4 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve: Optimal

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   0               0                  0.00%        0      0      0         0     0.0s

Solving report
  Model             00d137ad27554193bf654bfd87cf7e03-pulp
  Status            Optimal
  Primal bound      0
  Dual bound        0
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   feasible
                    0 (objective)
                    0 (bound viol.)
                    0 (int. viol.)
                    0 (row viol.)
  Timing            0.04 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/00d137ad27554193bf654bfd87cf7e03-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/fb087c0c1ff44a439dc4bb42f8125da0-pulp.sol"
Set option log_file to "/tmp/fb087c0c1ff44a439dc4bb42f8125da0-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  fb087c0c1ff44a439dc4bb42f8125da0-pulp has 3 rows; 3 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [5e-01, 7e+00]
  RHS    [5e+00, 1e+01]
Assessing feasibility of MIP using primal feasibility and integrality tolerance of       1e-06
Solution has               num          max          sum
Col     infeasibilities      0            0            0
Integer infeasibilities      0            0            0
Row     infeasibilities      0            0            0
Row     residuals            0            0            0
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve: Optimal

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   65              65                 0.00%        0      0      0         0     0.0s

Solving report
  Model             fb087c0c1ff44a439dc4bb42f8125da0-pulp
  Status            Optimal
  Primal bound      65
  Dual bound        65
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   feasible
                    65 (objective)
                    0 (bound viol.)
                    0 (int. viol.)
                    0 (row viol.)
  Timing            0.03 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/fb087c0c1ff44a439dc4bb42f8125da0-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/8e9f72c340ae4000a177c7bec8ab00c3-pulp.sol"
Set option log_file to "/tmp/8e9f72c340ae4000a177c7bec8ab00c3-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   8e9f72c340ae4000a177c7bec8ab00c3-pulp has 5 rows; 4 cols; 9 nonzeros
Coefficient ranges:
  Matrix [5e-01, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-5); columns 0(-4); elements 0(-9) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 8e9f72c340ae4000a177c7bec8ab00c3-pulp
Model status        : Optimal
Objective value     :  6.2000000000e+01
Relative P-D gap    :  1.1460366706e-16
HiGHS run time      :          0.05
Writing the solution to /tmp/8e9f72c340ae4000a177c7bec8ab00c3-pulp.sol
........Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/195177245c6d4e3184ea8c5c69e4c73b-pulp.sol"
Set option log_file to "/tmp/195177245c6d4e3184ea8c5c69e4c73b-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   195177245c6d4e3184ea8c5c69e4c73b-pulp has 4 rows; 4 cols; 5 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
Problem status detected on presolve: Infeasible
Model name          : 195177245c6d4e3184ea8c5c69e4c73b-pulp
Model status        : Infeasible
Objective value     :  0.0000000000e+00
HiGHS run time      :          0.01
Writing the solution to /tmp/195177245c6d4e3184ea8c5c69e4c73b-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/f9019dc9c25d4563a61d84fff90349d0-pulp.sol"
Set option log_file to "/tmp/f9019dc9c25d4563a61d84fff90349d0-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   f9019dc9c25d4563a61d84fff90349d0-pulp has 3 rows; 4 cols; 6 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 1e+01]
  RHS    [5e+00, 2e+01]
Presolving model
Problem status detected on presolve: Infeasible
Model name          : f9019dc9c25d4563a61d84fff90349d0-pulp
Model status        : Infeasible
Objective value     :  0.0000000000e+00
HiGHS run time      :          0.01
Writing the solution to /tmp/f9019dc9c25d4563a61d84fff90349d0-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/8f59f1164e294cf6aa7cff8dd1a7ba63-pulp.sol"
Set option log_file to "/tmp/8f59f1164e294cf6aa7cff8dd1a7ba63-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   8f59f1164e294cf6aa7cff8dd1a7ba63-pulp has 2 rows; 1 cols; 2 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [0e+00, 0e+00]
  RHS    [1e+00, 2e+00]
Presolving model
Problem status detected on presolve: Infeasible
Model name          : 8f59f1164e294cf6aa7cff8dd1a7ba63-pulp
Model status        : Infeasible
Objective value     :  0.0000000000e+00
HiGHS run time      :          0.01
Writing the solution to /tmp/8f59f1164e294cf6aa7cff8dd1a7ba63-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/05c1f53a1354460bb1b2ef609388b3de-pulp.sol"
Set option log_file to "/tmp/05c1f53a1354460bb1b2ef609388b3de-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  05c1f53a1354460bb1b2ef609388b3de-pulp has 3 rows; 3 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Assessing feasibility of MIP using primal feasibility and integrality tolerance of       1e-06
Solution has               num          max          sum
Col     infeasibilities      0            0            0
Integer infeasibilities      0            0            0
Row     infeasibilities      0            0            0
Row     residuals            0            0            0
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve: Optimal

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   64              64                 0.00%        0      0      0         0     0.0s

Solving report
  Model             05c1f53a1354460bb1b2ef609388b3de-pulp
  Status            Optimal
  Primal bound      64
  Dual bound        64
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   feasible
                    64 (objective)
                    0 (bound viol.)
                    0 (int. viol.)
                    0 (row viol.)
  Timing            0.04 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/05c1f53a1354460bb1b2ef609388b3de-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/a5791824a499403a8d87fc996444aebf-pulp.sol"
Set option log_file to "/tmp/a5791824a499403a8d87fc996444aebf-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  a5791824a499403a8d87fc996444aebf-pulp has 3 rows; 4 cols; 6 nonzeros; 3 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 1e+01]
  RHS    [5e+00, 1e+01]
Presolving model
Presolve: Infeasible

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   -inf            inf                  inf        0      0      0         0     0.0s

Solving report
  Model             a5791824a499403a8d87fc996444aebf-pulp
  Status            Infeasible
  Primal bound      inf
  Dual bound        -inf
  Gap               inf
  P-D integral      0
  Solution status   -
  Timing            0.03 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/a5791824a499403a8d87fc996444aebf-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/5164e8d61e1149829fa0167616c32b7b-pulp.sol"
Set option log_file to "/tmp/5164e8d61e1149829fa0167616c32b7b-pulp.HiGHS_log"
Set option write_solution_to_file to true
Number of BV entries in BOUNDS section is 2
MIP  5164e8d61e1149829fa0167616c32b7b-pulp has 2 rows; 3 cols; 3 nonzeros; 2 integer variables (2 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 1e+00]
  RHS    [2e+00, 2e+00]
Presolving model
Presolve: Infeasible

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   inf             -inf                 inf        0      0      0         0     0.0s

Solving report
  Model             5164e8d61e1149829fa0167616c32b7b-pulp
  Status            Infeasible
  Primal bound      -inf
  Dual bound        inf
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   -
  Timing            0.03 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/5164e8d61e1149829fa0167616c32b7b-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/b4f6742a6b9a44abbe593d0f5bcc20ec-pulp.sol"
Set option log_file to "/tmp/b4f6742a6b9a44abbe593d0f5bcc20ec-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   b4f6742a6b9a44abbe593d0f5bcc20ec-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 1e+00]
  RHS    [5e+00, 1e+01]
Presolving model
2 rows, 2 cols, 4 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : b4f6742a6b9a44abbe593d0f5bcc20ec-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/b4f6742a6b9a44abbe593d0f5bcc20ec-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/16901f4bbaa24b9faa9b4fe4b254587f-pulp.sol"
Set option log_file to "/tmp/16901f4bbaa24b9faa9b4fe4b254587f-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   16901f4bbaa24b9faa9b4fe4b254587f-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 16901f4bbaa24b9faa9b4fe4b254587f-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/16901f4bbaa24b9faa9b4fe4b254587f-pulp.sol
....Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option time_limit to 10
Set option solution_file to "/tmp/bfa2da348b1f4217bfc41c06bf3a5b6d-pulp.sol"
Set option log_file to "/tmp/bfa2da348b1f4217bfc41c06bf3a5b6d-pulp.HiGHS_log"
Set option write_solution_to_file to true
WARNING: Free format reader reached time_limit while parsing the input file
ERROR:   Parser reached timeout
Error loading file
ERunning HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/3f459cc870384adea37f8cf0d0524b53-pulp.sol"
Set option log_file to "/tmp/3f459cc870384adea37f8cf0d0524b53-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  3f459cc870384adea37f8cf0d0524b53-pulp has 3 rows; 3 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve: Optimal

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   64              64                 0.00%        0      0      0         0     0.0s

Solving report
  Model             3f459cc870384adea37f8cf0d0524b53-pulp
  Status            Optimal
  Primal bound      64
  Dual bound        64
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   feasible
                    64 (objective)
                    0 (bound viol.)
                    0 (int. viol.)
                    0 (row viol.)
  Timing            0.04 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/3f459cc870384adea37f8cf0d0524b53-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/68ad4a9b28b142e2bb8a67e772751501-pulp.sol"
Set option log_file to "/tmp/68ad4a9b28b142e2bb8a67e772751501-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  68ad4a9b28b142e2bb8a67e772751501-pulp has 3 rows; 3 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve: Optimal

Src: B => Branching; C => Central rounding; F => Feasibility pump; H => Heuristic; L => Sub-MIP;
     P => Empty MIP; R => Randomized rounding; S => Solve LP; T => Evaluate node; U => Unbounded;
     z => Trivial zero; l => Trivial lower; u => Trivial upper; p => Trivial point; X => User solution

        Nodes      |    B&B Tree     |            Objective Bounds              |  Dynamic Constraints |       Work      
Src  Proc. InQueue |  Leaves   Expl. | BestBound       BestSol              Gap |   Cuts   InLp Confl. | LpIters     Time

         0       0         0   0.00%   64.95           64.95              0.00%        0      0      0         0     0.0s

Solving report
  Model             68ad4a9b28b142e2bb8a67e772751501-pulp
  Status            Optimal
  Primal bound      64.95
  Dual bound        64.95
  Gap               0% (tolerance: 0.01%)
  P-D integral      0
  Solution status   feasible
                    64.95 (objective)
                    0 (bound viol.)
                    0 (int. viol.)
                    0 (row viol.)
  Timing            0.04 (total)
                    0.00 (presolve)
                    0.00 (solve)
                    0.00 (postsolve)
  Max sub-MIP depth 0
  Nodes             0
  Repair LPs        0 (0 feasible; 0 iterations)
  LP iterations     0 (total)
                    0 (strong br.)
                    0 (separation)
                    0 (heuristics)
Writing the solution to /tmp/68ad4a9b28b142e2bb8a67e772751501-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/ece4d2b4efa34f028bfaed9080dcd879-pulp.sol"
Set option log_file to "/tmp/ece4d2b4efa34f028bfaed9080dcd879-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   ece4d2b4efa34f028bfaed9080dcd879-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : ece4d2b4efa34f028bfaed9080dcd879-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/ece4d2b4efa34f028bfaed9080dcd879-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/dfd1073ecfdd41eab84675fc3e0fc8b5-pulp.sol"
Set option log_file to "/tmp/dfd1073ecfdd41eab84675fc3e0fc8b5-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   dfd1073ecfdd41eab84675fc3e0fc8b5-pulp has 5 rows; 5 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-5); columns 0(-5); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : dfd1073ecfdd41eab84675fc3e0fc8b5-pulp
Model status        : Optimal
Objective value     :  0.0000000000e+00
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/dfd1073ecfdd41eab84675fc3e0fc8b5-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option time_limit to 20
Set option solution_file to "/tmp/a1f7c0ae43bc4d4e83f69e701fcb606c-pulp.sol"
Set option log_file to "/tmp/a1f7c0ae43bc4d4e83f69e701fcb606c-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   a1f7c0ae43bc4d4e83f69e701fcb606c-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : a1f7c0ae43bc4d4e83f69e701fcb606c-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/a1f7c0ae43bc4d4e83f69e701fcb606c-pulp.sol
.....Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solver to "simplex"
Set option solution_file to "/tmp/4cb1d83864a44484b0a3d28feaec0642-pulp.sol"
Set option log_file to "/tmp/4cb1d83864a44484b0a3d28feaec0642-pulp.HiGHS_log"
Set option write_solution_to_file to true
MIP  4cb1d83864a44484b0a3d28feaec0642-pulp has 3 rows; 3 cols; 6 nonzeros; 1 integer variables (0 binary)
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Solving LP relaxation since solver = simplex
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-3); columns 0(-3); elements 0(-6) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 4cb1d83864a44484b0a3d28feaec0642-pulp
Model status        : Optimal
Objective value     :  5.8000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/4cb1d83864a44484b0a3d28feaec0642-pulp.sol
....Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option time_limit to 20
Set option solution_file to "/tmp/e1d39a9071754b1c8c5ad69d4f42691b-pulp.sol"
Set option log_file to "/tmp/e1d39a9071754b1c8c5ad69d4f42691b-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   e1d39a9071754b1c8c5ad69d4f42691b-pulp has 4 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-4); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : e1d39a9071754b1c8c5ad69d4f42691b-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/e1d39a9071754b1c8c5ad69d4f42691b-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option time_limit to 1
Set option solution_file to "/tmp/4f4ddd722a6a47a1880069a78f4b9ec8-pulp.sol"
Set option log_file to "/tmp/4f4ddd722a6a47a1880069a78f4b9ec8-pulp.HiGHS_log"
Set option write_solution_to_file to true
WARNING: Free format reader reached time_limit while parsing the input file
ERROR:   Parser reached timeout
Error loading file
E..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/d4145409ee2040d1a8ce4c6abd24c49f-pulp.sol"
Set option log_file to "/tmp/d4145409ee2040d1a8ce4c6abd24c49f-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   d4145409ee2040d1a8ce4c6abd24c49f-pulp has 1 rows; 2 cols; 1 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [0e+00, 0e+00]
  RHS    [1e+00, 1e+00]
Presolving model
0 rows, 0 cols, 0 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-1); columns 0(-2); elements 0(-1) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : d4145409ee2040d1a8ce4c6abd24c49f-pulp
Model status        : Optimal
Objective value     :  0.0000000000e+00
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/d4145409ee2040d1a8ce4c6abd24c49f-pulp.sol
..Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/89b131637f1646b9854593ffdfd954f6-pulp.sol"
Set option log_file to "/tmp/89b131637f1646b9854593ffdfd954f6-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   89b131637f1646b9854593ffdfd954f6-pulp has 5 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 1e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 1 cols, 1 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-5); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : 89b131637f1646b9854593ffdfd954f6-pulp
Model status        : Optimal
Objective value     :  2.0000000000e+00
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.05
Writing the solution to /tmp/89b131637f1646b9854593ffdfd954f6-pulp.sol
.Running HiGHS 1.10.0 (git hash: fd8665394): Copyright (c) 2025 HiGHS under MIT licence terms
Set option solution_file to "/tmp/c33a3e750de6482cb937944a6598bdc5-pulp.sol"
Set option log_file to "/tmp/c33a3e750de6482cb937944a6598bdc5-pulp.HiGHS_log"
Set option write_solution_to_file to true
LP   c33a3e750de6482cb937944a6598bdc5-pulp has 5 rows; 4 cols; 7 nonzeros
Coefficient ranges:
  Matrix [1e+00, 1e+00]
  Cost   [1e+00, 9e+00]
  Bound  [1e+00, 4e+00]
  RHS    [5e+00, 1e+01]
Presolving model
1 rows, 2 cols, 2 nonzeros  0s
0 rows, 0 cols, 0 nonzeros  0s
Presolve : Reductions: rows 0(-5); columns 0(-4); elements 0(-7) - Reduced to empty
Solving the original LP from the solution after postsolve
Model name          : c33a3e750de6482cb937944a6598bdc5-pulp
Model status        : Optimal
Objective value     :  5.4000000000e+01
Relative P-D gap    :  0.0000000000e+00
HiGHS run time      :          0.04
Writing the solution to /tmp/c33a3e750de6482cb937944a6598bdc5-pulp.sol
.ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss......................................................F..Welcome to the CBC MILP Solver 
Version: 2.10.10 
Build Date: Sep 26 2023 

command line - /builddir/pulp/pulp/apis/../solverdir/cbc/linux/arm64/cbc /tmp/93d4cf57716543f3b731812139c302b9-pulp.mps -timeMode elapsed -branch -printingOptions all -solution /tmp/93d4cf57716543f3b731812139c302b9-pulp.sol (default strategy 1)
At line 2 NAME          MODEL
At line 3 ROWS
At line 9 COLUMNS
At line 20 RHS
At line 25 BOUNDS
At line 29 ENDATA
Problem MODEL has 4 rows, 4 columns and 7 elements
Coin0008I MODEL read with 0 errors
Option for timeMode changed from cpu to elapsed
Presolve 1 (-3) rows, 2 (-2) columns and 2 (-5) elements
0  Obj 51.9 Primal inf 2.099999 (1)
1  Obj 54
Optimal - objective value 54
After Postsolve, objective 54, infeasibilities - dual 0 (0), primal 0 (0)
Optimal objective 54 - 1 iterations time 0.032, Presolve 0.01
Option for printingOptions changed from normal to all
Total time (CPU seconds):       0.05   (Wallclock seconds):       0.05

.......................ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss..ssss
======================================================================
ERROR: test_measuring_solving_time (pulp.tests.test_pulp.HiGHS_CMDTest.test_measuring_solving_time)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 70, in skip_wrapper
    return test_item(test_obj, *args, **kwargs)
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 1311, in test_measuring_solving_time
    status = prob.solve(self.solver)
  File "/builddir/pulp/pulp/pulp.py", line 2007, in solve
    status = solver.actualSolve(self, **kwargs)
  File "/builddir/pulp/pulp/apis/highs_api.py", line 180, in actualSolve
    model_line = [line for line in lines if "Status" in line][0]
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

======================================================================
ERROR: test_time_limit_no_solution (pulp.tests.test_pulp.HiGHS_CMDTest.test_time_limit_no_solution)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 70, in skip_wrapper
    return test_item(test_obj, *args, **kwargs)
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 1340, in test_time_limit_no_solution
    status = prob.solve(self.solver)
  File "/builddir/pulp/pulp/pulp.py", line 2007, in solve
    status = solver.actualSolve(self, **kwargs)
  File "/builddir/pulp/pulp/apis/highs_api.py", line 180, in actualSolve
    model_line = [line for line in lines if "Status" in line][0]
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

======================================================================
FAIL: test_measuring_solving_time (pulp.tests.test_pulp.PULP_CBC_CMDTest.test_measuring_solving_time)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 70, in skip_wrapper
    return test_item(test_obj, *args, **kwargs)
  File "/builddir/pulp/pulp/tests/test_pulp.py", line 1326, in test_measuring_solving_time
    self.assertEqual(status, const.LpStatusOptimal)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: -1 != 1

----------------------------------------------------------------------
Ran 1760 tests in 709.512s

FAILED (failures=1, errors=2, skipped=1602)
Traceback (most recent call last):
  File "/builddir/pulp/_e/bin/pulptest", line 8, in <module>
    sys.exit(pulpTestAll())
             ~~~~~~~~~~~^^
  File "/builddir/pulp/pulp/tests/run_tests.py", line 17, in pulpTestAll
    raise pulp.PulpError("Tests Failed")
pulp.constants.PulpError: Tests Failed