./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1 --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 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 05:54:47,391 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 05:54:47,442 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 05:54:47,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 05:54:47,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 05:54:47,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 05:54:47,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 05:54:47,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 05:54:47,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 05:54:47,466 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 05:54:47,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 05:54:47,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 05:54:47,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 05:54:47,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 05:54:47,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 05:54:47,468 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 05:54:47,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 05:54:47,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 05:54:47,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 05:54:47,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 05:54:47,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1
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 -> 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff
[2024-12-02 05:54:47,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 05:54:47,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 05:54:47,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 05:54:47,672 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 05:54:47,673 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 05:54:47,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i
[2024-12-02 05:54:50,271 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/1d50ef56b/4803e493e10b478db2ce12d5442814b3/FLAG363057c3d
[2024-12-02 05:54:50,468 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 05:54:50,468 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i
[2024-12-02 05:54:50,476 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/1d50ef56b/4803e493e10b478db2ce12d5442814b3/FLAG363057c3d
[2024-12-02 05:54:50,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/1d50ef56b/4803e493e10b478db2ce12d5442814b3
[2024-12-02 05:54:50,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 05:54:50,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 05:54:50,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 05:54:50,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 05:54:50,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 05:54:50,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:50" (1/1) ...
[2024-12-02 05:54:50,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9c59eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:50, skipping insertion in model container
[2024-12-02 05:54:50,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:50" (1/1) ...
[2024-12-02 05:54:50,866 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 05:54:50,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i[1555,1568]
[2024-12-02 05:54:51,032 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:629)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:3128)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:255)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1602)
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:783)
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:1507)
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:1158)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1141)
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:393)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1629)
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:3507)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2500)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:641)
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$Toolchain.processToolchain(ToolchainManager.java:319)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2024-12-02 05:54:51,039 INFO L158 Benchmark]: Toolchain (without parser) took 195.59ms. Allocated memory is still 117.4MB. Free memory was 93.6MB in the beginning and 82.7MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 05:54:51,039 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-12-02 05:54:51,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.67ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 82.7MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-12-02 05:54:51,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 193.67ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 82.7MB in the end (delta: 10.7MB). Peak memory consumption was 8.4MB. 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:629)
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: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1 --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 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 05:54:52,730 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 05:54:52,803 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-12-02 05:54:52,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 05:54:52,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 05:54:52,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 05:54:52,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 05:54:52,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 05:54:52,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 05:54:52,832 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 05:54:52,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 05:54:52,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 05:54:52,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 05:54:52,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 05:54:52,832 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 05:54:52,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true
[2024-12-02 05:54:52,833 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 05:54:52,834 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 05:54:52,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 05:54:52,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 05:54:52,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Trace refinement strategy=FOX
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-12-02 05:54:52,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 05:54:52,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 05:54:52,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 05:54:52,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 05:54:52,836 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1
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 -> 4f966bbb701fa0020ebf49f98d5faa7f02bbc3a28868891c6c7ff0a45fb5b1ff
[2024-12-02 05:54:53,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 05:54:53,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 05:54:53,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 05:54:53,066 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 05:54:53,067 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 05:54:53,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i
[2024-12-02 05:54:55,737 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/3dd81ef21/35f0d7493c3c49ab9ba657d5c946f42d/FLAG4c91a9d67
[2024-12-02 05:54:55,913 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 05:54:55,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i
[2024-12-02 05:54:55,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/3dd81ef21/35f0d7493c3c49ab9ba657d5c946f42d/FLAG4c91a9d67
[2024-12-02 05:54:55,934 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/data/3dd81ef21/35f0d7493c3c49ab9ba657d5c946f42d
[2024-12-02 05:54:55,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 05:54:55,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 05:54:55,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 05:54:55,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 05:54:55,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 05:54:55,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:55" (1/1) ...
[2024-12-02 05:54:55,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6efa3623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:55, skipping insertion in model container
[2024-12-02 05:54:55,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:55" (1/1) ...
[2024-12-02 05:54:55,958 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 05:54:56,067 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i[1555,1568]
[2024-12-02 05:54:56,107 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 05:54:56,118 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 05:54:56,128 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/sv-benchmarks/c/recursified_nla-digbench/recursified_knuth.i[1555,1568]
[2024-12-02 05:54:56,154 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 05:54:56,169 INFO L204 MainTranslator]: Completed translation
[2024-12-02 05:54:56,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56 WrapperNode
[2024-12-02 05:54:56,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 05:54:56,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 05:54:56,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 05:54:56,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 05:54:56,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,204 INFO L138 Inliner]: procedures = 22, calls = 177, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 98
[2024-12-02 05:54:56,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 05:54:56,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 05:54:56,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 05:54:56,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 05:54:56,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,238 INFO L175 MemorySlicer]: Split 141 memory accesses to 10 slices as follows [2, 8, 20, 9, 16, 32, 2, 24, 7, 21]. 23 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0, 0, 0, 0, 0, 0, 0]. The 27 writes are split as follows [0, 0, 5, 1, 5, 5, 1, 5, 1, 4].
[2024-12-02 05:54:56,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,239 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,255 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 05:54:56,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 05:54:56,269 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 05:54:56,269 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 05:54:56,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (1/1) ...
[2024-12-02 05:54:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 05:54:56,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 05:54:56,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 05:54:56,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 05:54:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 05:54:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-12-02 05:54:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-12-02 05:54:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2
[2024-12-02 05:54:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3
[2024-12-02 05:54:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4
[2024-12-02 05:54:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5
[2024-12-02 05:54:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6
[2024-12-02 05:54:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#7
[2024-12-02 05:54:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#8
[2024-12-02 05:54:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#9
[2024-12-02 05:54:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-12-02 05:54:56,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_67_0
[2024-12-02 05:54:56,334 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_67_0
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4
[2024-12-02 05:54:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#5
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#6
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#7
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#8
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#9
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 05:54:56,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2024-12-02 05:54:56,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#5
[2024-12-02 05:54:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#6
[2024-12-02 05:54:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#7
[2024-12-02 05:54:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#8
[2024-12-02 05:54:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#9
[2024-12-02 05:54:56,458 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 05:54:56,459 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 05:55:01,226 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live.
[2024-12-02 05:55:01,226 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 05:55:01,236 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 05:55:01,236 INFO L312 CfgBuilder]: Removed 1 assume(true) statements.
[2024-12-02 05:55:01,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:55:01 BoogieIcfgContainer
[2024-12-02 05:55:01,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 05:55:01,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 05:55:01,239 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 05:55:01,242 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 05:55:01,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:54:55" (1/3) ...
[2024-12-02 05:55:01,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a855b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:55:01, skipping insertion in model container
[2024-12-02 05:55:01,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:56" (2/3) ...
[2024-12-02 05:55:01,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a855b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:55:01, skipping insertion in model container
[2024-12-02 05:55:01,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:55:01" (3/3) ...
[2024-12-02 05:55:01,244 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_knuth.i
[2024-12-02 05:55:01,259 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 05:55:01,260 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_knuth.i that has 4 procedures, 43 locations, 1 initial locations, 0 loop locations, and 1 error locations.
[2024-12-02 05:55:01,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 05:55:01,308 INFO L333 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=LoopHeads, 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;@6035015a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 05:55:01,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-12-02 05:55:01,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-12-02 05:55:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-12-02 05:55:01,317 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 05:55:01,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 05:55:01,318 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 05:55:01,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 05:55:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash 970018058, now seen corresponding path program 1 times
[2024-12-02 05:55:01,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 05:55:01,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597085606]
[2024-12-02 05:55:01,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 05:55:01,333 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
[2024-12-02 05:55:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/mathsat
[2024-12-02 05:55:01,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/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)
[2024-12-02 05:55:01,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/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
[2024-12-02 05:55:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 05:55:01,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-12-02 05:55:01,759 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 05:55:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-12-02 05:55:01,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-12-02 05:55:01,776 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-12-02 05:55:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597085606]
[2024-12-02 05:55:01,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597085606] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 05:55:01,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 05:55:01,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 05:55:01,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284634692]
[2024-12-02 05:55:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 05:55:01,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-12-02 05:55:01,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-12-02 05:55:01,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-12-02 05:55:01,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 05:55:01,796 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 05:55:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-12-02 05:55:01,815 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions.
[2024-12-02 05:55:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2024-12-02 05:55:01,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21
[2024-12-02 05:55:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2024-12-02 05:55:01,823 INFO L225 Difference]: With dead ends: 83
[2024-12-02 05:55:01,823 INFO L226 Difference]: Without dead ends: 37
[2024-12-02 05:55:01,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-12-02 05:55:01,827 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-12-02 05:55:01,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-12-02 05:55:01,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-12-02 05:55:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2024-12-02 05:55:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 27 states have internal predecessors, (34), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-12-02 05:55:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions.
[2024-12-02 05:55:01,859 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 21
[2024-12-02 05:55:01,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2024-12-02 05:55:01,859 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions.
[2024-12-02 05:55:01,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2024-12-02 05:55:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions.
[2024-12-02 05:55:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2024-12-02 05:55:01,860 INFO L210 NwaCegarLoop]: Found error trace
[2024-12-02 05:55:01,861 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 05:55:01,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0
[2024-12-02 05:55:02,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/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
[2024-12-02 05:55:02,061 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-12-02 05:55:02,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 05:55:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash 82734734, now seen corresponding path program 1 times
[2024-12-02 05:55:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX
[2024-12-02 05:55:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953121509]
[2024-12-02 05:55:02,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 05:55:02,063 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
[2024-12-02 05:55:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/mathsat
[2024-12-02 05:55:02,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/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)
[2024-12-02 05:55:02,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d88ca2e-360b-482a-8b2a-0746fe29c925/bin/uautomizer-verify-84ZbGMXZE1/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