Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.001898/0.001898, allocations: 99.64 kB / 18.94 MB, free: 2.551 MB / 14.72 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 1.477/1.477, allocations: 230.6 MB / 252.7 MB, free: 8.094 MB / 206.1 MB
"
[Timeout remaining time 178]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.001696/0.001696, allocations: 222.7 kB / 309.2 MB, free: 3 MB / 238.1 MB
"
[Timeout remaining time 180]
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo", uses=false) [Timeout 180]
"Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo): time 0.6416/0.6416, allocations: 107.2 MB / 472.8 MB, free: 4.551 MB / 334.1 MB
"
[Timeout remaining time 179]
Using package OpenIPSL with version 3.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0/package.mo)
Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo)
Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo)
Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo)
Running command: "" <> buildModelFMU(OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal,fileNamePrefix="OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryReal",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal,fileNamePrefix="OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryReal",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660]
"Notification: OpenIPSL requested package Complex of version 4.0.0. Complex 4.1.0 is used instead which states that it is fully compatible without conversion script needed.
Notification: OpenIPSL requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed.
Notification: Performance of FrontEnd - loaded program: time 0.002604/0.002604, allocations: 85.44 kB / 0.6331 GB, free: 5.059 MB / 430.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.4625/0.4651, allocations: 80.14 MB / 0.7113 GB, free: 4.285 MB / 494.1 MB
Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal): time 0.005404/0.4705, allocations: 5.454 MB / 0.7166 GB, free: 0.5898 MB / 494.1 MB
Notification: Performance of NFInst.instExpressions: time 0.00365/0.4741, allocations: 1.744 MB / 0.7183 GB, free: 15.38 MB / 0.4981 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0006774/0.4748, allocations: 9.531 kB / 0.7184 GB, free: 15.38 MB / 0.4981 GB
Notification: Performance of NFTyping.typeComponents: time 0.0005942/0.4754, allocations: 230.6 kB / 0.7186 GB, free: 15.26 MB / 0.4981 GB
Notification: Performance of NFTyping.typeBindings: time 0.00155/0.477, allocations: 0.5853 MB / 0.7191 GB, free: 14.85 MB / 0.4981 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001937/0.4789, allocations: 0.7162 MB / 0.7198 GB, free: 14.47 MB / 0.4981 GB
Notification: Performance of NFFlatten.flatten: time 0.001809/0.4807, allocations: 1.372 MB / 0.7212 GB, free: 13.79 MB / 0.4981 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0003675/0.4811, allocations: 194.4 kB / 0.7214 GB, free: 13.68 MB / 0.4981 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0007911/0.4819, allocations: 0.5724 MB / 0.7219 GB, free: 13.41 MB / 0.4981 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0008254/0.4827, allocations: 0.646 MB / 0.7226 GB, free: 13.13 MB / 0.4981 GB
Notification: Performance of NFPackage.collectConstants: time 0.0001473/0.4828, allocations: 107.5 kB / 0.7227 GB, free: 13.13 MB / 0.4981 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.0004817/0.4833, allocations: 211.4 kB / 0.7229 GB, free: 13.1 MB / 0.4981 GB
Notification: Performance of NFScalarize.scalarize: time 0.0003114/0.4836, allocations: 276 kB / 0.7231 GB, free: 12.92 MB / 0.4981 GB
Notification: Performance of NFVerifyModel.verify: time 0.0005213/0.4842, allocations: 0.4894 MB / 0.7236 GB, free: 12.62 MB / 0.4981 GB
Notification: Performance of NFConvertDAE.convert: time 0.001984/0.4861, allocations: 1.478 MB / 0.7251 GB, free: 11.95 MB / 0.4981 GB
Notification: Performance of FrontEnd - DAE generated: time 5.24e-06/0.4861, allocations: 4.797 kB / 0.7251 GB, free: 11.95 MB / 0.4981 GB
Notification: Performance of FrontEnd: time 1.984e-06/0.4861, allocations: 0 / 0.7251 GB, free: 11.95 MB / 0.4981 GB
Notification: Performance of Transformations before backend: time 2.518e-05/0.4862, allocations: 0 / 0.7251 GB, free: 11.95 MB / 0.4981 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 176
 * Number of variables: 176
Notification: Performance of Generate backend data structure: time 0.009249/0.4954, allocations: 2.487 MB / 0.7275 GB, free: 10.88 MB / 0.4981 GB
Notification: Performance of prepare preOptimizeDAE: time 5.704e-05/0.4955, allocations: 10 kB / 0.7275 GB, free: 10.88 MB / 0.4981 GB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.000213/0.4957, allocations: 119.1 kB / 0.7276 GB, free: 10.8 MB / 0.4981 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004722/0.5004, allocations: 0.6855 MB / 0.7283 GB, free: 10.65 MB / 0.4981 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001672/0.5021, allocations: 0.6797 MB / 0.7289 GB, free: 10.16 MB / 0.4981 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000599/0.5027, allocations: 454.4 kB / 0.7294 GB, free: 9.719 MB / 0.4981 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002092/0.5029, allocations: 74.22 kB / 0.7294 GB, free: 9.691 MB / 0.4981 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002992/0.5059, allocations: 1.127 MB / 0.7305 GB, free: 9.277 MB / 0.4981 GB
Notification: Performance of preOpt findStateOrder (simulation): time 2.368e-05/0.5059, allocations: 0 / 0.7305 GB, free: 9.277 MB / 0.4981 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.95e-05/0.506, allocations: 26.53 kB / 0.7306 GB, free: 9.258 MB / 0.4981 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.151e-05/0.506, allocations: 17.45 kB / 0.7306 GB, free: 9.258 MB / 0.4981 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003053/0.5091, allocations: 1.089 MB / 0.7317 GB, free: 8.902 MB / 0.4981 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 0.007259/0.5163, allocations: 2.646 MB / 0.7342 GB, free: 7.148 MB / 0.4981 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.007445/0.5238, allocations: 1.909 MB / 0.7361 GB, free: 6.297 MB / 0.4981 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001922/0.5257, allocations: 0.681 MB / 0.7368 GB, free: 5.949 MB / 0.4981 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0001546/0.5259, allocations: 14.83 kB / 0.7368 GB, free: 5.941 MB / 0.4981 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.559e-05/0.5259, allocations: 44.09 kB / 0.7368 GB, free: 5.895 MB / 0.4981 GB
Notification: Performance of pre-optimization done (n=89): time 3.887e-06/0.5259, allocations: 1.219 kB / 0.7368 GB, free: 5.895 MB / 0.4981 GB
Notification: Performance of matching and sorting (n=89): time 0.03021/0.5561, allocations: 6.941 MB / 0.7436 GB, free: 2.543 MB / 0.4981 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 8.219e-05/0.5562, allocations: 87.11 kB / 0.7437 GB, free: 2.445 MB / 0.4981 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001567/0.5578, allocations: 0.8513 MB / 0.7445 GB, free: 1.953 MB / 0.4981 GB
Notification: Performance of collectPreVariables (initialization): time 0.0002446/0.558, allocations: 41.17 kB / 0.7446 GB, free: 1.91 MB / 0.4981 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0004272/0.5584, allocations: 458.4 kB / 0.745 GB, free: 1.508 MB / 0.4981 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0005244/0.559, allocations: 336 kB / 0.7453 GB, free: 1.215 MB / 0.4981 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004201/0.5594, allocations: 154.3 kB / 0.7455 GB, free: 1.121 MB / 0.4981 GB
Notification: Performance of setup shared object (initialization): time 0.0001772/0.5596, allocations: 338.8 kB / 0.7458 GB, free: 0.793 MB / 0.4981 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001782/0.5613, allocations: 0.6597 MB / 0.7464 GB, free: 484 kB / 0.4981 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001882/0.5632, allocations: 0.8112 MB / 0.7472 GB, free: 15.98 MB / 0.5137 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.003631/0.5669, allocations: 1.477 MB / 0.7487 GB, free: 15.16 MB / 0.5137 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.706e-06/0.5669, allocations: 1.531 kB / 0.7487 GB, free: 15.16 MB / 0.5137 GB
Notification: Performance of matching and sorting (n=118) (initialization): time 0.0159/0.5828, allocations: 4.289 MB / 0.7529 GB, free: 12.41 MB / 0.5137 GB
Notification: Performance of prepare postOptimizeDAE: time 3.284e-05/0.5828, allocations: 11.94 kB / 0.7529 GB, free: 12.4 MB / 0.5137 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.681e-05/0.5828, allocations: 4 kB / 0.7529 GB, free: 12.4 MB / 0.5137 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.008481/0.5913, allocations: 2.197 MB / 0.755 GB, free: 10.2 MB / 0.5137 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008232/0.5921, allocations: 139.8 kB / 0.7551 GB, free: 10.06 MB / 0.5137 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.02974/0.6219, allocations: 9.932 MB / 0.7648 GB, free: 4 kB / 0.5137 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001906/0.6238, allocations: 171.4 kB / 0.765 GB, free: 15.83 MB / 0.5294 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002155/0.624, allocations: 35.98 kB / 0.765 GB, free: 15.8 MB / 0.5294 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 15
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (79):
 * Single equations (assignments): 77
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 1
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 1 system
   {(2,100.0%)}
 * Non-linear Jacobian (size): 0 systems
 * Without analytic Jacobian (size): 0 systems
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(24,15)}
Notification: Performance of prepare postOptimizeDAE: time 0.0005889/0.6246, allocations: 226 kB / 0.7653 GB, free: 15.57 MB / 0.5294 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004127/0.625, allocations: 115.2 kB / 0.7654 GB, free: 15.45 MB / 0.5294 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01571/0.6407, allocations: 4.178 MB / 0.7694 GB, free: 11.26 MB / 0.5294 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.596e-05/0.6407, allocations: 15.94 kB / 0.7695 GB, free: 11.24 MB / 0.5294 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 5.32e-06/0.6407, allocations: 4 kB / 0.7695 GB, free: 11.24 MB / 0.5294 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.285e-05/0.6408, allocations: 3.984 kB / 0.7695 GB, free: 11.23 MB / 0.5294 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01905/0.6598, allocations: 5.261 MB / 0.7746 GB, free: 5.91 MB / 0.5294 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.036e-05/0.6598, allocations: 0 / 0.7746 GB, free: 5.91 MB / 0.5294 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005876/0.6604, allocations: 91.83 kB / 0.7747 GB, free: 5.82 MB / 0.5294 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.008269/0.6687, allocations: 2.105 MB / 0.7768 GB, free: 3.707 MB / 0.5294 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001887/0.6689, allocations: 16 kB / 0.7768 GB, free: 3.691 MB / 0.5294 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02655/0.6954, allocations: 8.783 MB / 0.7853 GB, free: 10.79 MB / 0.545 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.723e-06/0.6954, allocations: 3.938 kB / 0.7853 GB, free: 10.78 MB / 0.545 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01879/0.7142, allocations: 5.215 MB / 0.7904 GB, free: 5.539 MB / 0.545 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0005932/0.7148, allocations: 131.1 kB / 0.7906 GB, free: 5.41 MB / 0.545 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005025/0.7153, allocations: 16 kB / 0.7906 GB, free: 5.395 MB / 0.545 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001533/0.7168, allocations: 107.9 kB / 0.7907 GB, free: 5.289 MB / 0.545 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000883/0.7177, allocations: 248.5 kB / 0.7909 GB, free: 5.043 MB / 0.545 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000139/0.7178, allocations: 20 kB / 0.7909 GB, free: 5.023 MB / 0.545 GB
Notification: Performance of sorting global known variables: time 0.001186/0.719, allocations: 0.5789 MB / 0.7915 GB, free: 4.434 MB / 0.545 GB
Notification: Performance of sort global known variables: time 1.1e-07/0.719, allocations: 0 / 0.7915 GB, free: 4.434 MB / 0.545 GB
Notification: Performance of remove unused functions: time 0.001892/0.7209, allocations: 415.7 kB / 0.7919 GB, free: 4.027 MB / 0.545 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 2
 * Number of states: 3 (gENCLS.delta,gENCLS.eq,gENCLS.omega)
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (52):
 * Single equations (assignments): 50
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 1
 * Torn equation systems: 1
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details (not torn):
 * Constant Jacobian (size): 0 systems
 * Linear Jacobian (size,density): 1 system
   {(2,100.0%)}
 * Non-linear Jacobian (size): 0 systems
 * Without analytic Jacobian (size): 0 systems
Notification: Torn system details for strict tearing set:
 * Linear torn systems (#iteration vars, #inner vars, density): 0 systems
 * Non-linear torn systems (#iteration vars, #inner vars): 1 system
   {(24,15)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.01885/0.7398, allocations: 5.789 MB / 0.7976 GB, free: 14.2 MB / 0.5606 GB
Notification: Performance of simCode: created initialization part: time 0.009158/0.7489, allocations: 2.406 MB / 0.7999 GB, free: 11.78 MB / 0.5606 GB
Notification: Performance of simCode: created event and clocks part: time 6.311e-06/0.7489, allocations: 7.938 kB / 0.7999 GB, free: 11.77 MB / 0.5606 GB
Notification: Performance of simCode: created simulation system equations: time 0.006727/0.7557, allocations: 1.665 MB / 0.8015 GB, free: 10.09 MB / 0.5606 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001302/0.757, allocations: 93.55 kB / 0.8016 GB, free: 9.996 MB / 0.5606 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.04652/0.8035, allocations: 15.23 MB / 0.8165 GB, free: 10.55 MB / 0.5762 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006703/0.8042, allocations: 472.1 kB / 0.8169 GB, free: 10.05 MB / 0.5762 GB
Notification: Performance of simCode: alias equations: time 0.000443/0.8046, allocations: 78.31 kB / 0.817 GB, free: 9.969 MB / 0.5762 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007066/0.8053, allocations: 407.3 kB / 0.8174 GB, free: 9.57 MB / 0.5762 GB
Notification: Performance of SimCode: time 1.143e-06/0.8053, allocations: 0 / 0.8174 GB, free: 9.57 MB / 0.5762 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.09232/0.8976, allocations: 37.82 MB / 0.8543 GB, free: 3.914 MB / 0.6075 GB
Notification: Performance of buildModelFMU: Generate platform static: time 14.64/15.54, allocations: 16.03 kB / 0.8544 GB, free: 3.898 MB / 0.6075 GB
"
[Timeout remaining time 644]
(rm -f OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal.pipe ; mkfifo OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal.pipe ; head -c 1048576 < OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal.pipe >> ../files/OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal.sim & python3 -m fmpy simulate  --output-file OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal_res.csv --start-time 0 --stop-time 10 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.004 OpenIPSL_OpenIPSL_Tests_Sources_SourcesWithRealInputs_VoltageSourceReImInputVaryReal.fmu > OpenIPSL_OpenIPSL.Tests.Sources.SourcesWithRealInputs.VoltageSourceReImInputVaryReal.pipe 2>&1) [Timeout 52.5]
[Calling sys.exit(0), Time elapsed: 19.204372685868293]
Failed to read output from testmodel.py, exit status != 0:
15.686034724116325 15.712296933 15.221400055
Calling exit ...
<OMPython.OMCSessionZMQ object at 0x7f0be134afb0>