Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Examples.FlowSystem.Simplified1.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo", uses=false)
Using package Buildings with version 12.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo)
Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo)
Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo)
Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo)
Running command: translateModel(Buildings.Fluid.Examples.FlowSystem.Simplified1,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|pmpNorth.m_flow|pmpSouth.m_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Examples.FlowSystem.Simplified1")
translateModel(Buildings.Fluid.Examples.FlowSystem.Simplified1,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|pmpNorth.m_flow|pmpSouth.m_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Examples.FlowSystem.Simplified1")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001551/0.001551, allocations: 101.1 kB / 16.27 MB, free: 6.414 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001514/0.001514, allocations: 190.3 kB / 17.2 MB, free: 5.953 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.395/1.395, allocations: 222.9 MB / 240.9 MB, free: 15.24 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 2.685/2.685, allocations: 482.4 MB / 0.7553 GB, free: 6.98 MB / 0.6231 GB
Notification: Performance of FrontEnd - loaded program: time 0.001986/0.001986, allocations: 72.72 kB / 0.9245 GB, free: 15.97 MB / 0.7012 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.8264/0.8284, allocations: 162.2 MB / 1.083 GB, free: 1.629 MB / 0.8262 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.FlowSystem.Simplified1): time 0.3829/1.211, allocations: 357.7 MB / 1.432 GB, free: 8.09 MB / 1.154 GB
Notification: Performance of NFInst.instExpressions: time 0.1261/1.337, allocations: 75.67 MB / 1.506 GB, free: 12.23 MB / 1.232 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.01685/1.354, allocations: 437.5 kB / 1.507 GB, free: 11.8 MB / 1.232 GB
Notification: Performance of NFTyping.typeComponents: time 0.04644/1.401, allocations: 23.49 MB / 1.53 GB, free: 4.266 MB / 1.248 GB
Notification: Performance of NFTyping.typeBindings: time 0.6399/2.041, allocations: 13.87 MB / 1.543 GB, free: 82.02 MB / 1.248 GB
Notification: Performance of NFTyping.typeClassSections: time 0.02298/2.064, allocations: 9.917 MB / 1.553 GB, free: 81.93 MB / 1.248 GB
Notification: Performance of NFFlatten.flatten: time 0.06755/2.131, allocations: 54.51 MB / 1.606 GB, free: 81.57 MB / 1.248 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.03064/2.162, allocations: 19.49 MB / 1.625 GB, free: 79.18 MB / 1.248 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.03532/2.197, allocations: 16.84 MB / 1.641 GB, free: 78.16 MB / 1.248 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.02756/2.225, allocations: 15.45 MB / 1.657 GB, free: 74.95 MB / 1.248 GB
Notification: Performance of NFPackage.collectConstants: time 0.009468/2.235, allocations: 1.86 MB / 1.658 GB, free: 74.43 MB / 1.248 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.02308/2.258, allocations: 5.921 MB / 1.664 GB, free: 70.16 MB / 1.248 GB
Notification: Performance of NFScalarize.scalarize: time 0.01016/2.268, allocations: 6.092 MB / 1.67 GB, free: 66.52 MB / 1.248 GB
Notification: Performance of NFVerifyModel.verify: time 0.02257/2.29, allocations: 10.74 MB / 1.681 GB, free: 59.52 MB / 1.248 GB
Notification: Performance of NFConvertDAE.convert: time 0.04034/2.331, allocations: 29.38 MB / 1.709 GB, free: 37.23 MB / 1.248 GB
Notification: Performance of FrontEnd - DAE generated: time 7.604e-06/2.331, allocations: 3.938 kB / 1.709 GB, free: 37.22 MB / 1.248 GB
Notification: Performance of FrontEnd: time 2.645e-06/2.331, allocations: 0 / 1.709 GB, free: 37.22 MB / 1.248 GB
Notification: Performance of Transformations before backend: time 0.001/2.332, allocations: 0 / 1.709 GB, free: 37.22 MB / 1.248 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 1949
 * Number of variables: 1949
Notification: Performance of Generate backend data structure: time 0.06126/2.393, allocations: 22.57 MB / 1.731 GB, free: 16.21 MB / 1.248 GB
Notification: Performance of prepare preOptimizeDAE: time 4.264e-05/2.393, allocations: 12.03 kB / 1.731 GB, free: 16.2 MB / 1.248 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01736/2.411, allocations: 3.088 MB / 1.734 GB, free: 13.08 MB / 1.248 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.03986/2.451, allocations: 18.95 MB / 1.753 GB, free: 10.63 MB / 1.264 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000978/2.452, allocations: 0.6681 MB / 1.753 GB, free: 9.961 MB / 1.264 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.005024/2.457, allocations: 0.8862 MB / 1.754 GB, free: 9.078 MB / 1.264 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.04716/2.504, allocations: 17 MB / 1.771 GB, free: 7.883 MB / 1.279 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0003543/2.504, allocations: 18.56 kB / 1.771 GB, free: 7.871 MB / 1.279 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.004301/2.508, allocations: 316 kB / 1.771 GB, free: 7.562 MB / 1.279 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000253/2.509, allocations: 207.4 kB / 1.771 GB, free: 7.363 MB / 1.279 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0476/2.556, allocations: 21.08 MB / 1.792 GB, free: 2.32 MB / 1.295 GB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.1538/2.71, allocations: 82.42 MB / 1.873 GB, free: 13.68 MB / 1.389 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.02795/2.738, allocations: 13.84 MB / 1.886 GB, free: 120 kB / 1.389 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0187/2.757, allocations: 10.01 MB / 1.896 GB, free: 6.09 MB / 1.404 GB
Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts.
Notification: Performance of preOpt evalFunc (simulation): time 0.0835/2.84, allocations: 34.6 MB / 1.93 GB, free: 3.23 MB / 1.436 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.02406/2.865, allocations: 10.45 MB / 1.94 GB, free: 8.699 MB / 1.451 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.0235/2.888, allocations: 5.786 MB / 1.946 GB, free: 3.07 MB / 1.451 GB
Notification: Performance of pre-optimization done (n=524): time 3.481e-05/2.888, allocations: 0 / 1.946 GB, free: 3.07 MB / 1.451 GB
Notification: Performance of matching and sorting (n=784): time 1.577/4.466, allocations: 238.4 MB / 2.178 GB, free: 0.6755 GB / 1.607 GB
Warning: The linear system: 
1 : valNorth2[1].dp = valNorth2[2].port_a.p - valSouth1[1].port_b.p
2 : valNorth2[7].dp = valNorth2[2].port_a.p - valSouth1[1].port_b.p
[
  -1.0 , 1.0 ;
  -1.0 , 1.0
]
  *
[
  valNorth2[2].port_a.p ;
  valSouth1[1].port_b.p
]
  =
[
  -valNorth2[1].dp ;
  -valNorth2[7].dp
]
 might be structurally or numerically singular for variable valSouth1[1].port_b.p since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : valCoo.m_flow + spl1.res1.m_flow + valNorth.res3.m_flow + valSouth.res3.m_flow + (-tabsSouth1[2].m_flow) - tabsSouth1[1].m_flow - tabsSouth1[3].m_flow - tabsSouth1[4].m_flow - tabsSouth2[1].m_flow - tabsSouth2[2].m_flow - tabsSouth2[3].m_flow - tabsSouth2[4].m_flow - tabsSouth2[5].m_flow - tabsSouth2[6].m_flow - tabsSouth2[7].m_flow - tabsSouth2[8].m_flow - tabsNorth1[1].m_flow - tabsNorth1[2].m_flow - tabsNorth1[3].m_flow - tabsNorth1[4].m_flow - tabsNorth2[1].m_flow - tabsNorth2[2].m_flow - tabsNorth2[3].m_flow - tabsNorth2[4].m_flow - tabsNorth2[5].m_flow - tabsNorth2[6].m_flow - tabsNorth2[8].m_flow - tabsNorth2[7].m_flow = 0.0
2 : tabsSouth1[4].m_flow + tabsSouth1[3].m_flow + tabsSouth1[2].m_flow + tabsSouth1[1].m_flow - pipSouth1.m_flow = 0.0
[
  -1.0 , -1.0 ;
  1.0 , 1.0
]
  *
[
  tabsSouth1[2].m_flow ;
  tabsSouth1[1].m_flow
]
  =
[
  tabsSouth1[3].m_flow + tabsNorth2[8].m_flow + tabsNorth2[7].m_flow + tabsNorth2[6].m_flow + tabsNorth2[5].m_flow + tabsNorth2[4].m_flow + tabsNorth2[3].m_flow + tabsNorth2[2].m_flow + tabsNorth2[1].m_flow + tabsNorth1[4].m_flow + tabsNorth1[3].m_flow + tabsNorth1[2].m_flow + tabsNorth1[1].m_flow + tabsSouth2[8].m_flow + tabsSouth2[7].m_flow + tabsSouth2[6].m_flow + tabsSouth2[5].m_flow + tabsSouth2[4].m_flow + tabsSouth2[3].m_flow + tabsSouth2[2].m_flow + tabsSouth2[1].m_flow + tabsSouth1[4].m_flow + (-spl1.res1.m_flow) - valCoo.m_flow - valNorth.res3.m_flow - valSouth.res3.m_flow ;
  pipSouth1.m_flow + (-tabsSouth1[3].m_flow) - tabsSouth1[4].m_flow
]
 might be structurally or numerically singular for variable tabsSouth1[1].m_flow since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : valNorth2[7].dp = valNorth2[2].port_a.p - valSouth1[1].port_b.p
2 : valNorth2[1].dp = valNorth2[2].port_a.p - valSouth1[1].port_b.p
[
  -1.0 , 1.0 ;
  -1.0 , 1.0
]
  *
[
  valNorth2[2].port_a.p ;
  valSouth1[1].port_b.p
]
  =
[
  -valNorth2[7].dp ;
  -valNorth2[1].dp
]
 might be structurally or numerically singular for variable valSouth1[1].port_b.p since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : valCoo.m_flow + spl1.res1.m_flow + valNorth.res3.m_flow + valSouth.res3.m_flow + (-tabsSouth1[2].m_flow) - tabsSouth1[1].m_flow - tabsSouth1[3].m_flow - tabsSouth1[4].m_flow - tabsSouth2[1].m_flow - tabsSouth2[2].m_flow - tabsSouth2[3].m_flow - tabsSouth2[4].m_flow - tabsSouth2[5].m_flow - tabsSouth2[6].m_flow - tabsSouth2[7].m_flow - tabsSouth2[8].m_flow - tabsNorth1[1].m_flow - tabsNorth1[2].m_flow - tabsNorth1[3].m_flow - tabsNorth1[4].m_flow - tabsNorth2[1].m_flow - tabsNorth2[2].m_flow - tabsNorth2[3].m_flow - tabsNorth2[4].m_flow - tabsNorth2[5].m_flow - tabsNorth2[6].m_flow - tabsNorth2[8].m_flow - tabsNorth2[7].m_flow = 0.0
2 : tabsSouth1[4].m_flow + tabsSouth1[3].m_flow + tabsSouth1[2].m_flow + tabsSouth1[1].m_flow - pipSouth1.m_flow = 0.0
[
  -1.0 , -1.0 ;
  1.0 , 1.0
]
  *
[
  tabsSouth1[2].m_flow ;
  tabsSouth1[1].m_flow
]
  =
[
  tabsSouth1[3].m_flow + tabsNorth2[8].m_flow + tabsNorth2[7].m_flow + tabsNorth2[6].m_flow + tabsNorth2[5].m_flow + tabsNorth2[4].m_flow + tabsNorth2[3].m_flow + tabsNorth2[2].m_flow + tabsNorth2[1].m_flow + tabsNorth1[4].m_flow + tabsNorth1[3].m_flow + tabsNorth1[2].m_flow + tabsNorth1[1].m_flow + tabsSouth2[8].m_flow + tabsSouth2[7].m_flow + tabsSouth2[6].m_flow + tabsSouth2[5].m_flow + tabsSouth2[4].m_flow + tabsSouth2[3].m_flow + tabsSouth2[2].m_flow + tabsSouth2[1].m_flow + tabsSouth1[4].m_flow + (-spl1.res1.m_flow) - valCoo.m_flow - valNorth.res3.m_flow - valSouth.res3.m_flow ;
  pipSouth1.m_flow + (-tabsSouth1[3].m_flow) - tabsSouth1[4].m_flow
]
 might be structurally or numerically singular for variable tabsSouth1[1].m_flow since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
[/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/SymbolicJacobian.mo:2347:10-2347:88:writable] Error: Internal error function optimizeJacobianMatrix failed
[/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/SymbolicJacobian.mo:2264:9-2264:79:writable] Error: Internal error function createJacobian failed
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 227
 * Number of states: 0 ()
 * Number of discrete variables: 10 ($whenCondition1,stepValve.count,$PRE.stepValve.count,stepValve.T_start,$PRE.stepValve.T_start,pumpHea.stage,stepPump.pulseStart,$PRE.stepPump.pulseStart,stepPump.y,$whenCondition2)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (1036):
 * Single equations (assignments): 1014
 * Array equations: 6
 * Algorithm blocks: 1
 * Record equations: 4
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 8
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 0 systems
 * Non-linear Jacobian (size): 8 systems
   {1, 1, 1, 1, 1, 1, 1, 1}
 * Without analytic Jacobian (size): 0 systems
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 1 system
   {(28,28,89.3%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 2 systems
   {(39,65), (39,65)}
Warning: The linear system: 
1 : valSouth2[2].dp = valSouth2[2].port_a.p - valSouth1[1].port_b.p
2 : valSouth2[1].dp = valSouth2[2].port_a.p - valSouth1[1].port_b.p
[
  -1.0 , 1.0 ;
  -1.0 , 1.0
]
  *
[
  valSouth2[2].port_a.p ;
  valSouth1[1].port_b.p
]
  =
[
  -valSouth2[2].dp ;
  -valSouth2[1].dp
]
 might be structurally or numerically singular for variable valSouth1[1].port_b.p since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : spl1.res1.m_flow + valNorth.res3.m_flow + valSouth.res3.m_flow + (-tabsNorth2[7].m_flow) - $cse299 - tabsNorth2[8].m_flow - tabsNorth2[6].m_flow - tabsNorth2[5].m_flow - tabsNorth2[4].m_flow - tabsNorth2[3].m_flow - tabsNorth2[2].m_flow - tabsNorth2[1].m_flow - tabsNorth1[4].m_flow - tabsNorth1[3].m_flow - tabsNorth1[2].m_flow - tabsNorth1[1].m_flow - tabsSouth2[8].m_flow - tabsSouth2[7].m_flow - tabsSouth2[6].m_flow - tabsSouth2[5].m_flow - tabsSouth2[4].m_flow - tabsSouth2[3].m_flow - tabsSouth2[2].m_flow - tabsSouth2[1].m_flow - tabsSouth1[4].m_flow - tabsSouth1[3].m_flow - tabsSouth1[1].m_flow - tabsSouth1[2].m_flow = 0.0
2 : tabsSouth1[4].m_flow + tabsSouth1[3].m_flow + tabsSouth1[2].m_flow + tabsSouth1[1].m_flow - pipSouth1.m_flow = 0.0
[
  -1.0 , -1.0 ;
  1.0 , 1.0
]
  *
[
  tabsSouth1[1].m_flow ;
  tabsSouth1[2].m_flow
]
  =
[
  tabsNorth2[7].m_flow + tabsSouth1[4].m_flow + tabsSouth1[3].m_flow + tabsSouth2[1].m_flow + tabsSouth2[2].m_flow + tabsSouth2[3].m_flow + tabsSouth2[4].m_flow + tabsSouth2[5].m_flow + tabsSouth2[6].m_flow + tabsSouth2[7].m_flow + tabsSouth2[8].m_flow + tabsNorth1[1].m_flow + tabsNorth1[2].m_flow + tabsNorth1[3].m_flow + tabsNorth1[4].m_flow + tabsNorth2[1].m_flow + tabsNorth2[2].m_flow + tabsNorth2[3].m_flow + tabsNorth2[4].m_flow + tabsNorth2[5].m_flow + tabsNorth2[6].m_flow + tabsNorth2[8].m_flow + $cse299 + (-valNorth.res3.m_flow) - spl1.res1.m_flow - valSouth.res3.m_flow ;
  pipSouth1.m_flow + (-tabsSouth1[3].m_flow) - tabsSouth1[4].m_flow
]
 might be structurally or numerically singular for variable tabsSouth1[2].m_flow since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : valSouth2[2].dp = valSouth2[2].port_a.p - valSouth1[1].port_b.p
2 : valSouth2[1].dp = valSouth2[2].port_a.p - valSouth1[1].port_b.p
[
  -1.0 , 1.0 ;
  -1.0 , 1.0
]
  *
[
  valSouth2[2].port_a.p ;
  valSouth1[1].port_b.p
]
  =
[
  -valSouth2[2].dp ;
  -valSouth2[1].dp
]
 might be structurally or numerically singular for variable valSouth1[1].port_b.p since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Warning: The linear system: 
1 : spl1.res1.m_flow + valNorth.res3.m_flow + valSouth.res3.m_flow + (-tabsNorth2[7].m_flow) - $cse299 - tabsNorth2[8].m_flow - tabsNorth2[6].m_flow - tabsNorth2[5].m_flow - tabsNorth2[4].m_flow - tabsNorth2[3].m_flow - tabsNorth2[2].m_flow - tabsNorth2[1].m_flow - tabsNorth1[4].m_flow - tabsNorth1[3].m_flow - tabsNorth1[2].m_flow - tabsNorth1[1].m_flow - tabsSouth2[8].m_flow - tabsSouth2[7].m_flow - tabsSouth2[6].m_flow - tabsSouth2[5].m_flow - tabsSouth2[4].m_flow - tabsSouth2[3].m_flow - tabsSouth2[2].m_flow - tabsSouth2[1].m_flow - tabsSouth1[4].m_flow - tabsSouth1[3].m_flow - tabsSouth1[1].m_flow - tabsSouth1[2].m_flow = 0.0
2 : tabsSouth1[4].m_flow + tabsSouth1[3].m_flow + tabsSouth1[2].m_flow + tabsSouth1[1].m_flow - pipSouth1.m_flow = 0.0
[
  -1.0 , -1.0 ;
  1.0 , 1.0
]
  *
[
  tabsSouth1[1].m_flow ;
  tabsSouth1[2].m_flow
]
  =
[
  tabsNorth2[7].m_flow + tabsSouth1[4].m_flow + tabsSouth1[3].m_flow + tabsSouth2[1].m_flow + tabsSouth2[2].m_flow + tabsSouth2[3].m_flow + tabsSouth2[4].m_flow + tabsSouth2[5].m_flow + tabsSouth2[6].m_flow + tabsSouth2[7].m_flow + tabsSouth2[8].m_flow + tabsNorth1[1].m_flow + tabsNorth1[2].m_flow + tabsNorth1[3].m_flow + tabsNorth1[4].m_flow + tabsNorth2[1].m_flow + tabsNorth2[2].m_flow + tabsNorth2[3].m_flow + tabsNorth2[4].m_flow + tabsNorth2[5].m_flow + tabsNorth2[6].m_flow + tabsNorth2[8].m_flow + $cse299 + (-valNorth.res3.m_flow) - spl1.res1.m_flow - valSouth.res3.m_flow ;
  pipSouth1.m_flow + (-tabsSouth1[3].m_flow) - tabsSouth1[4].m_flow
]
 might be structurally or numerically singular for variable tabsSouth1[2].m_flow since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway.
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
[/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/SymbolicJacobian.mo:2347:10-2347:88:writable] Error: Internal error function optimizeJacobianMatrix failed
[/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/BackEnd/SymbolicJacobian.mo:2264:9-2264:79:writable] Error: Internal error function createJacobian failed
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 5
 * Number of states: 42 ($STATESET1.x[32],$STATESET1.x[31],$STATESET1.x[30],$STATESET1.x[29],$STATESET1.x[28],$STATESET1.x[27],$STATESET1.x[26],$STATESET1.x[25],$STATESET1.x[24],$STATESET1.x[23],$STATESET1.x[22],$STATESET1.x[21],$STATESET1.x[20],$STATESET1.x[19],$STATESET1.x[18],$STATESET1.x[17],$STATESET1.x[16],$STATESET1.x[15],$STATESET1.x[14],$STATESET1.x[13],$STATESET1.x[12],$STATESET1.x[11],$STATESET1.x[10],$STATESET1.x[9],$STATESET1.x[8],$STATESET1.x[7],$STATESET1.x[6],$STATESET1.x[5],$STATESET1.x[4],$STATESET1.x[3],$STATESET1.x[2],$STATESET1.x[1],pmpSouth.vol.dynBal.U,pmpNorth.vol.dynBal.U,valSouth.vol.dynBal.U,valNorth.vol.dynBal.U,spl.vol.dynBal.U,spl1.vol.dynBal.U,pumpHea.vol.dynBal.U,spl2.vol.dynBal.U,spl3.vol.dynBal.U,pumpCoo.vol.dynBal.U)
 * Number of discrete variables: 7 ($whenCondition2,$whenCondition1,stepPump.y,stepPump.pulseStart,pumpHea.stage,stepValve.T_start,stepValve.count)
 * Number of discrete states: 1 (stepValve.count)
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (565):
 * Single equations (assignments): 542
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 10
 * When equations: 3
 * If-equations: 0
 * Equation systems (not torn): 6
 * Torn equation systems: 4
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 0 systems
 * Non-linear Jacobian (size): 6 systems
   {1, 1, 1, 1, 1, 1}
 * Without analytic Jacobian (size): 0 systems
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 1 system
   {(28,28,89.3%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 3 systems
   {(36,81), (1,1), (63,161)}
[/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/SimCode/SimCodeUtil.mo:4689:9-4689:59:writable] Error: Internal error function createStateSetsSets failed.
[/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/SimCode/SimCodeUtil.mo:803:5-803:146:writable] Error: Internal error function createSimCode failed [Transformation from optimised DAE to simulation code structure failed]