./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --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 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:54:43,265 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:54:43,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:54:43,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:54:43,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:54:43,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:54:43,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:54:43,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:54:43,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:54:43,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:54:43,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:54:43,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:54:43,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:54:43,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:54:43,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:54:43,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:54:43,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:54:43,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:54:43,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:54:43,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:54:43,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:54:43,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:54:43,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:54:43,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:54:43,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:54:43,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:54:43,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:54:43,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:54:43,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:54:43,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:54:43,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:54:43,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:54:43,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:54:43,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:54:43,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:54:43,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:54:43,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:54:43,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:54:43,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:54:43,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:54:43,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:54:43,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:54:43,525 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:54:43,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:54:43,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:54:43,527 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:54:43,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:54:43,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:54:43,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:54:43,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:54:43,539 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:54:43,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:54:43,541 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:54:43,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:54:43,541 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:54:43,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:54:43,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:54:43,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:54:43,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:54:43,543 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:54:43,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:54:43,544 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:54:43,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:54:43,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:54:43,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:54:43,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:54:43,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:54:43,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:54:43,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:54:43,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:54:43,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:54:43,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:54:43,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:54:43,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:54:43,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:54:43,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:54:43,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e
[2021-11-13 18:54:43,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:54:44,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:54:44,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:54:44,006 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:54:44,007 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:54:44,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i
[2021-11-13 18:54:44,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/42bec3c88/a86a2d98955f44bdbdc89c864faa3e9a/FLAG6e2d9d447
[2021-11-13 18:54:44,771 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:54:44,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i
[2021-11-13 18:54:44,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/42bec3c88/a86a2d98955f44bdbdc89c864faa3e9a/FLAG6e2d9d447
[2021-11-13 18:54:45,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/42bec3c88/a86a2d98955f44bdbdc89c864faa3e9a
[2021-11-13 18:54:45,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:54:45,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:54:45,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:54:45,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:54:45,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:54:45,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:45" (1/1) ...
[2021-11-13 18:54:45,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4230461f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:45, skipping insertion in model container
[2021-11-13 18:54:45,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:45" (1/1) ...
[2021-11-13 18:54:45,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:54:45,169 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:54:45,360 WARN L228 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_b9e11309-ad0d-48fc-beba-18d64698d219/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961]
[2021-11-13 18:54:45,394 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:846)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleUnaryFloatFunction(StandardFunctionHandler.java:1759)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:236)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1430)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:729)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3254)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2328)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115)
at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.<init>(MainTranslator.java:93)
at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
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)
[2021-11-13 18:54:45,408 INFO L158 Benchmark]: Toolchain (without parser) took 289.50ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.6MB in the beginning and 106.6MB in the end (delta: -30.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:54:45,409 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 109.1MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:54:45,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.3MB in the beginning and 106.6MB in the end (delta: -30.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:54:45,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.41ms. Allocated memory is still 109.1MB. Free memory is still 61.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 285.82ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.3MB in the beginning and 106.6MB in the end (delta: -30.3MB). 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:846)
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_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --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 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:54:48,082 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:54:48,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:54:48,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:54:48,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:54:48,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:54:48,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:54:48,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:54:48,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:54:48,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:54:48,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:54:48,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:54:48,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:54:48,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:54:48,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:54:48,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:54:48,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:54:48,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:54:48,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:54:48,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:54:48,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:54:48,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:54:48,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:54:48,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:54:48,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:54:48,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:54:48,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:54:48,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:54:48,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:54:48,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:54:48,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:54:48,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:54:48,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:54:48,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:54:48,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:54:48,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:54:48,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:54:48,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:54:48,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:54:48,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:54:48,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:54:48,234 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-11-13 18:54:48,282 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:54:48,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:54:48,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:54:48,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:54:48,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:54:48,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:54:48,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:54:48,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:54:48,286 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:54:48,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:54:48,286 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:54:48,287 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:54:48,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:54:48,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:54:48,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:54:48,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:54:48,288 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-11-13 18:54:48,288 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-11-13 18:54:48,288 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:54:48,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:54:48,289 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:54:48,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:54:48,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:54:48,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:54:48,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:54:48,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:54:48,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:54:48,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:54:48,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:54:48,291 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-11-13 18:54:48,292 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-11-13 18:54:48,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:54:48,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:54:48,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:54:48,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:54:48,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-11-13 18:54:48,293 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32ffc80931eec32719df7516ac9cef0d342f12da4e57d4e3de062230f15f921e
[2021-11-13 18:54:48,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:54:48,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:54:48,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:54:48,829 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:54:48,830 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:54:48,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i
[2021-11-13 18:54:48,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/0c2cbb2a3/50f8774da697493e961559745818a8c2/FLAG0cdf4f495
[2021-11-13 18:54:49,598 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:54:49,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i
[2021-11-13 18:54:49,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/0c2cbb2a3/50f8774da697493e961559745818a8c2/FLAG0cdf4f495
[2021-11-13 18:54:49,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/data/0c2cbb2a3/50f8774da697493e961559745818a8c2
[2021-11-13 18:54:49,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:54:49,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:54:49,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:54:49,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:54:49,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:54:49,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:49" (1/1) ...
[2021-11-13 18:54:49,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7126ba46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:49, skipping insertion in model container
[2021-11-13 18:54:49,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:49" (1/1) ...
[2021-11-13 18:54:49,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:54:49,969 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:54:50,231 WARN L228 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_b9e11309-ad0d-48fc-beba-18d64698d219/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961]
[2021-11-13 18:54:50,304 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:54:50,344 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:54:50,373 WARN L228 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_b9e11309-ad0d-48fc-beba-18d64698d219/sv-benchmarks/c/nla-digbench-scaling/knuth_unwindbound10.i[948,961]
[2021-11-13 18:54:50,426 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:54:50,462 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:54:50,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50 WrapperNode
[2021-11-13 18:54:50,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:54:50,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:54:50,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:54:50,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:54:50,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:54:50,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:54:50,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:54:50,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:54:50,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:54:50,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:54:50,622 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:54:50,623 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:54:50,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (1/1) ...
[2021-11-13 18:54:50,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:54:50,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:54:50,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:54:50,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:54:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-11-13 18:54:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-11-13 18:54:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-11-13 18:54:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:54:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:54:50,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:54:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-11-13 18:54:50,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-11-13 18:54:54,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:54:54,195 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 18:54:54,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:54:54 BoogieIcfgContainer
[2021-11-13 18:54:54,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:54:54,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:54:54,200 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:54:54,231 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:54:54,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:54:49" (1/3) ...
[2021-11-13 18:54:54,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d4e224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:54:54, skipping insertion in model container
[2021-11-13 18:54:54,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:50" (2/3) ...
[2021-11-13 18:54:54,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d4e224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:54:54, skipping insertion in model container
[2021-11-13 18:54:54,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:54:54" (3/3) ...
[2021-11-13 18:54:54,235 INFO L111 eAbstractionObserver]: Analyzing ICFG knuth_unwindbound10.i
[2021-11-13 18:54:54,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:54:54,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:54:54,331 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:54:54,339 INFO L339 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR
[2021-11-13 18:54:54,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-11-13 18:54:54,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 18:54:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-11-13 18:54:54,370 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:54:54,372 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:54:54,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:54:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:54:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1511169482, now seen corresponding path program 1 times
[2021-11-13 18:54:54,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:54:54,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777861286]
[2021-11-13 18:54:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:54:54,404 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:54:54,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:54:54,409 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:54:54,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-11-13 18:54:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:54:55,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-11-13 18:54:55,046 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:54:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 18:54:55,382 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:54:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 18:54:55,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-11-13 18:54:55,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777861286]
[2021-11-13 18:54:55,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777861286] provided 1 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:54:55,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:54:55,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2
[2021-11-13 18:54:55,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933332556]
[2021-11-13 18:54:55,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:54:55,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:54:55,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-11-13 18:54:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:54:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:54:55,760 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 18:54:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:54:55,810 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions.
[2021-11-13 18:54:55,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:54:55,814 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19
[2021-11-13 18:54:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:54:55,828 INFO L225 Difference]: With dead ends: 55
[2021-11-13 18:54:55,828 INFO L226 Difference]: Without dead ends: 25
[2021-11-13 18:54:55,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:54:55,841 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:54:55,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time]
[2021-11-13 18:54:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-11-13 18:54:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2021-11-13 18:54:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-11-13 18:54:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions.
[2021-11-13 18:54:55,911 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 19
[2021-11-13 18:54:55,912 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:54:55,912 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions.
[2021-11-13 18:54:55,913 INFO L471 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 18:54:55,914 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions.
[2021-11-13 18:54:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-11-13 18:54:55,918 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:54:55,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:54:55,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:54:56,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3
[2021-11-13 18:54:56,121 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-11-13 18:54:56,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:54:56,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1110907126, now seen corresponding path program 1 times
[2021-11-13 18:54:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-11-13 18:54:56,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995408074]
[2021-11-13 18:54:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:54:56,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-11-13 18:54:56,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat
[2021-11-13 18:54:56,127 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-11-13 18:54:56,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9e11309-ad0d-48fc-beba-18d64698d219/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process