./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6908dde5
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 953dc8095830260ae835d79f90b96c794426fcd9911aa994e4cb8f2d3bfb6995 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false
--- Real Ultimate output ---
This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m
[2024-09-24 23:53:21,594 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-24 23:53:21,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-09-24 23:53:21,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-24 23:53:21,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-24 23:53:21,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-24 23:53:21,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-24 23:53:21,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-24 23:53:21,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-24 23:53:21,664 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-24 23:53:21,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-24 23:53:21,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-24 23:53:21,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-24 23:53:21,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-24 23:53:21,666 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-24 23:53:21,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-24 23:53:21,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-24 23:53:21,667 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-24 23:53:21,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-09-24 23:53:21,668 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-24 23:53:21,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-24 23:53:21,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-24 23:53:21,669 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-24 23:53:21,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-24 23:53:21,670 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-24 23:53:21,670 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-24 23:53:21,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-24 23:53:21,671 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-24 23:53:21,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-24 23:53:21,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-24 23:53:21,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-24 23:53:21,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-24 23:53:21,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-24 23:53:21,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-24 23:53:21,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-24 23:53:21,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-24 23:53:21,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-09-24 23:53:21,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-09-24 23:53:21,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-24 23:53:21,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-24 23:53:21,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-24 23:53:21,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-24 23:53:21,678 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 953dc8095830260ae835d79f90b96c794426fcd9911aa994e4cb8f2d3bfb6995
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-24 23:53:21,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-24 23:53:22,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-24 23:53:22,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-24 23:53:22,006 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-24 23:53:22,007 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-24 23:53:22,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i
[2024-09-24 23:53:23,418 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-24 23:53:23,638 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-24 23:53:23,638 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i
[2024-09-24 23:53:23,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/50e0a1e53/dcdc9d2c2cdf4052b26d1f7f9d8bdc6f/FLAG1fddd0b54
[2024-09-24 23:53:23,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/50e0a1e53/dcdc9d2c2cdf4052b26d1f7f9d8bdc6f
[2024-09-24 23:53:23,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-24 23:53:23,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-24 23:53:23,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-24 23:53:23,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-24 23:53:23,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-24 23:53:23,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:53:23" (1/1) ...
[2024-09-24 23:53:23,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33febc4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:23, skipping insertion in model container
[2024-09-24 23:53:23,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:53:23" (1/1) ...
[2024-09-24 23:53:23,695 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-24 23:53:23,836 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i[948,961]
[2024-09-24 23:53:23,848 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception:
java.lang.UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:2721)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:253)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1586)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:271)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:789)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:286)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1494)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:224)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleCompoundStatement(CHandler.java:1150)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1133)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:236)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:387)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1613)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:159)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3471)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2497)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:639)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:135)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:189)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:116)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.<init>(MainTranslator.java:94)
at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:145)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2024-09-24 23:53:23,853 INFO L158 Benchmark]: Toolchain (without parser) took 191.74ms. Allocated memory is still 180.4MB. Free memory was 149.4MB in the beginning and 139.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-24 23:53:23,853 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 180.4MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-09-24 23:53:23,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.96ms. Allocated memory is still 180.4MB. Free memory was 149.4MB in the beginning and 139.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2024-09-24 23:53:23,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21ms. Allocated memory is still 180.4MB. Free memory is still 151.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 189.96ms. Allocated memory is still 180.4MB. Free memory was 149.4MB in the beginning and 139.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator:
- ExceptionOrErrorResult: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt
de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: floating point operation not supported in non-bitprecise translation: sqrt: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructOtherUnaryFloatOperation(IntegerTranslation.java:610)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 953dc8095830260ae835d79f90b96c794426fcd9911aa994e4cb8f2d3bfb6995 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false
--- Real Ultimate output ---
This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m
[2024-09-24 23:53:25,766 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-09-24 23:53:25,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-09-24 23:53:25,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-09-24 23:53:25,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-09-24 23:53:25,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-09-24 23:53:25,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-09-24 23:53:25,880 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-09-24 23:53:25,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-09-24 23:53:25,880 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-09-24 23:53:25,881 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-09-24 23:53:25,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-09-24 23:53:25,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-09-24 23:53:25,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-09-24 23:53:25,885 INFO L153 SettingsManager]: * Use SBE=true
[2024-09-24 23:53:25,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-09-24 23:53:25,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-09-24 23:53:25,886 INFO L153 SettingsManager]: * sizeof long=4
[2024-09-24 23:53:25,886 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-09-24 23:53:25,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-09-24 23:53:25,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-09-24 23:53:25,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-09-24 23:53:25,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-09-24 23:53:25,891 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-09-24 23:53:25,891 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-09-24 23:53:25,891 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-09-24 23:53:25,891 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-09-24 23:53:25,891 INFO L153 SettingsManager]: * sizeof long double=12
[2024-09-24 23:53:25,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-09-24 23:53:25,892 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-09-24 23:53:25,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-09-24 23:53:25,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-09-24 23:53:25,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-09-24 23:53:25,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-09-24 23:53:25,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-24 23:53:25,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-09-24 23:53:25,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-09-24 23:53:25,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-09-24 23:53:25,899 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF
[2024-09-24 23:53:25,900 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-09-24 23:53:25,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-09-24 23:53:25,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-09-24 23:53:25,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-09-24 23:53:25,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-09-24 23:53:25,901 INFO L153 SettingsManager]: * Logic for external solver=AUFBV
[2024-09-24 23:53:25,902 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 953dc8095830260ae835d79f90b96c794426fcd9911aa994e4cb8f2d3bfb6995
Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false
[2024-09-24 23:53:26,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-09-24 23:53:26,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-09-24 23:53:26,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-09-24 23:53:26,215 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-09-24 23:53:26,215 INFO L274 PluginConnector]: CDTParser initialized
[2024-09-24 23:53:26,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i
[2024-09-24 23:53:27,710 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-09-24 23:53:27,896 INFO L384 CDTParser]: Found 1 translation units.
[2024-09-24 23:53:27,896 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i
[2024-09-24 23:53:27,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/96717d72c/01ba2e99409d473d986bb5836837748a/FLAG18c8274db
[2024-09-24 23:53:28,282 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/96717d72c/01ba2e99409d473d986bb5836837748a
[2024-09-24 23:53:28,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-09-24 23:53:28,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-09-24 23:53:28,288 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-09-24 23:53:28,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-09-24 23:53:28,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-09-24 23:53:28,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,295 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f76dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28, skipping insertion in model container
[2024-09-24 23:53:28,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,316 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-09-24 23:53:28,482 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i[948,961]
[2024-09-24 23:53:28,538 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-24 23:53:28,556 INFO L200 MainTranslator]: Completed pre-run
[2024-09-24 23:53:28,570 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound20.i[948,961]
[2024-09-24 23:53:28,593 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-09-24 23:53:28,612 INFO L204 MainTranslator]: Completed translation
[2024-09-24 23:53:28,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28 WrapperNode
[2024-09-24 23:53:28,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-09-24 23:53:28,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-09-24 23:53:28,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-09-24 23:53:28,614 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-09-24 23:53:28,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,644 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2024-09-24 23:53:28,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-09-24 23:53:28,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-09-24 23:53:28,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-09-24 23:53:28,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-09-24 23:53:28,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,675 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0].
[2024-09-24 23:53:28,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,702 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-09-24 23:53:28,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-09-24 23:53:28,708 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-09-24 23:53:28,708 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-09-24 23:53:28,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (1/1) ...
[2024-09-24 23:53:28,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-09-24 23:53:28,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3
[2024-09-24 23:53:28,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-09-24 23:53:28,744 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-09-24 23:53:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-09-24 23:53:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-09-24 23:53:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-09-24 23:53:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-09-24 23:53:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-09-24 23:53:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2024-09-24 23:53:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2024-09-24 23:53:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2024-09-24 23:53:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2024-09-24 23:53:28,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-09-24 23:53:28,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-09-24 23:53:28,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-09-24 23:53:28,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-09-24 23:53:28,873 INFO L241 CfgBuilder]: Building ICFG
[2024-09-24 23:53:28,875 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-09-24 23:53:33,716 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live.
[2024-09-24 23:53:33,717 INFO L290 CfgBuilder]: Performing block encoding
[2024-09-24 23:53:33,750 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-09-24 23:53:33,750 INFO L317 CfgBuilder]: Removed 1 assume(true) statements.
[2024-09-24 23:53:33,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:53:33 BoogieIcfgContainer
[2024-09-24 23:53:33,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-09-24 23:53:33,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-09-24 23:53:33,755 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-09-24 23:53:33,759 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-09-24 23:53:33,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:53:28" (1/3) ...
[2024-09-24 23:53:33,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32462de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:53:33, skipping insertion in model container
[2024-09-24 23:53:33,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:53:28" (2/3) ...
[2024-09-24 23:53:33,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32462de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:53:33, skipping insertion in model container
[2024-09-24 23:53:33,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:53:33" (3/3) ...
[2024-09-24 23:53:33,763 INFO L112 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound20.i
[2024-09-24 23:53:33,777 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-09-24 23:53:33,778 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-09-24 23:53:33,831 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-09-24 23:53:33,836 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40b06c2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-09-24 23:53:33,837 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-09-24 23:53:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-09-24 23:53:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-09-24 23:53:33,853 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-24 23:53:33,853 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-24 23:53:33,854 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-24 23:53:33,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-24 23:53:33,857 INFO L85 PathProgramCache]: Analyzing trace with hash -388460251, now seen corresponding path program 1 times
[2024-09-24 23:53:33,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-09-24 23:53:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713290095]
[2024-09-24 23:53:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-24 23:53:33,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-24 23:53:33,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat
[2024-09-24 23:53:33,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-09-24 23:53:33,873 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2024-09-24 23:53:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-09-24 23:53:34,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-09-24 23:53:34,155 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2024-09-24 23:53:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-09-24 23:53:34,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-09-24 23:53:34,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2024-09-24 23:53:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713290095]
[2024-09-24 23:53:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713290095] provided 1 perfect and 0 imperfect interpolant sequences
[2024-09-24 23:53:34,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-09-24 23:53:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-09-24 23:53:34,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026787429]
[2024-09-24 23:53:34,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-09-24 23:53:34,173 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-09-24 23:53:34,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2024-09-24 23:53:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-09-24 23:53:34,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-24 23:53:34,197 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-09-24 23:53:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-09-24 23:53:34,274 INFO L93 Difference]: Finished difference Result 58 states and 85 transitions.
[2024-09-24 23:53:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-09-24 23:53:34,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2024-09-24 23:53:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-09-24 23:53:34,282 INFO L225 Difference]: With dead ends: 58
[2024-09-24 23:53:34,282 INFO L226 Difference]: Without dead ends: 28
[2024-09-24 23:53:34,284 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-09-24 23:53:34,289 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-09-24 23:53:34,291 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-09-24 23:53:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2024-09-24 23:53:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2024-09-24 23:53:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2024-09-24 23:53:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions.
[2024-09-24 23:53:34,325 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 22
[2024-09-24 23:53:34,325 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-09-24 23:53:34,325 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions.
[2024-09-24 23:53:34,325 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2024-09-24 23:53:34,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-24 23:53:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions.
[2024-09-24 23:53:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2024-09-24 23:53:34,328 INFO L208 NwaCegarLoop]: Found error trace
[2024-09-24 23:53:34,328 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-09-24 23:53:34,345 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2024-09-24 23:53:34,528 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-24 23:53:34,529 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-09-24 23:53:34,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2024-09-24 23:53:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2061350939, now seen corresponding path program 1 times
[2024-09-24 23:53:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2024-09-24 23:53:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847162547]
[2024-09-24 23:53:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-09-24 23:53:34,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2024-09-24 23:53:34,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat
[2024-09-24 23:53:34,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2024-09-24 23:53:34,536 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process