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Use SCS in test_iis_spare_scs #39

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Merged
odow merged 3 commits into from
Apr 13, 2026
+19 −8
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Use SCS in test_iis_spare_scs #39

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Use SCS in test_iis_spare_scs
odow Apr 13, 2026
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odow Apr 13, 2026
7373703
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odow Apr 13, 2026
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3 changes: 3 additions & 0 deletions src/MathOptIIS.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -1004,6 +1004,9 @@ function _dual_certificate!(
)
for (F, S) in MOI.get(model, MOI.ListOfConstraintTypesPresent())
for ci in MOI.get(model, MOI.ListOfConstraintIndices{F,S}())
# This iszero check here is rather tight. We may want to consider
# relaxing it for solvers like SCS that have some tolerance for what
# is a certificate.
if !iszero(MOI.get(model, MOI.ConstraintDual(), ci))
push!(dual_certificate, ci)
end
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24 changes: 16 additions & 8 deletions test/runtests.jl
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Expand Up @@ -569,16 +569,20 @@ function test_iis_spare_scs()
optimize!(model)
solver = MathOptIIS.Optimizer()
MOI.set(solver, MathOptIIS.InfeasibleModel(), backend(model))
MOI.set(solver, MathOptIIS.InnerOptimizer(), HiGHS.Optimizer)
MOI.set(solver, MathOptIIS.InnerOptimizer(), SCS.Optimizer)
MOI.set(solver, MOI.Silent(), false)
MOI.compute_conflict!(solver)
data = solver.results
@test length(data) == 1
@test data[1].metadata === nothing
@test _isequal_unordered(data[].constraints, [index(c2), index(c1)])
data = only(solver.results)
@test data.metadata === nothing
@test _isequal_unordered(data.constraints, [index(c2), index(c1)])
result = Dict(c1 => MOI.IN_CONFLICT, c2 => MOI.IN_CONFLICT)
for ci in all_constraints(model; include_variable_in_set_constraints = true)
@test MOI.get(solver, MOI.ConstraintConflictStatus(), index(ci)) ==
get(result, ci, MOI.NOT_IN_CONFLICT)
stat = MOI.get(solver, MOI.ConstraintConflictStatus(), index(ci))
if haskey(result, ci)
@test stat == result[ci]
else
@test stat != MOI.IN_CONFLICT
end
end
return
end
Expand Down Expand Up @@ -1157,7 +1161,11 @@ function test_time_limit_interrupt()
F, S = MOI.ScalarAffineFunction{Float64}, MOI.EqualTo{Float64}
# We've set N such that it cannot find the full IIS in the time
# allowed.
@test MOI.get(iis, MOI.NumberOfConstraints{F,S}()) > 8
if N < 16
@test MOI.get(iis, MOI.NumberOfConstraints{F,S}()) > 8
else
@test MOI.get(iis, MOI.NumberOfConstraints{F,S}()) >= 8
end
end
end
return
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