./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c --full-output --architecture 64bit


--------------------------------------------------------------------------------


Checking for memory safety (deref-memtrack)
Using default analysis
Version 32f26835
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce492abcc29ddbc9795671b095b6bfaf5bfc547b
...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce492abcc29ddbc9795671b095b6bfaf5bfc547b
...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN
--- Real Ultimate output ---
This is Ultimate 0.1.24-32f2683
[2019-11-24 22:24:23,645 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-24 22:24:23,649 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-24 22:24:23,672 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-24 22:24:23,675 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-24 22:24:23,678 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-24 22:24:23,681 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-24 22:24:23,694 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-24 22:24:23,700 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-24 22:24:23,706 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-24 22:24:23,708 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-24 22:24:23,710 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-24 22:24:23,711 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-24 22:24:23,716 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-24 22:24:23,717 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-24 22:24:23,718 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-24 22:24:23,719 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-24 22:24:23,723 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-24 22:24:23,726 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-24 22:24:23,731 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-24 22:24:23,736 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-24 22:24:23,741 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-24 22:24:23,745 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-24 22:24:23,746 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-24 22:24:23,752 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-24 22:24:23,752 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-24 22:24:23,754 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-24 22:24:23,755 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-24 22:24:23,756 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-24 22:24:23,757 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-24 22:24:23,760 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-24 22:24:23,761 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-24 22:24:23,761 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-24 22:24:23,766 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-24 22:24:23,767 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-24 22:24:23,767 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-24 22:24:23,768 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-24 22:24:23,768 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-24 22:24:23,768 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-24 22:24:23,770 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-24 22:24:23,774 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-24 22:24:23,775 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf
[2019-11-24 22:24:23,802 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-24 22:24:23,803 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-24 22:24:23,808 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-24 22:24:23,808 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-24 22:24:23,808 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-24 22:24:23,809 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-24 22:24:23,809 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2019-11-24 22:24:23,809 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-24 22:24:23,809 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-24 22:24:23,810 INFO  L138        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2019-11-24 22:24:23,810 INFO  L138        SettingsManager]:  * Bitprecise bitfields=true
[2019-11-24 22:24:23,812 INFO  L138        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2019-11-24 22:24:23,812 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-24 22:24:23,812 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-24 22:24:23,813 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-24 22:24:23,813 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-24 22:24:23,815 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-24 22:24:23,815 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-24 22:24:23,815 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-24 22:24:23,815 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 22:24:23,816 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-24 22:24:23,816 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-24 22:24:23,816 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-24 22:24:23,816 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-24 22:24:23,818 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )


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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce492abcc29ddbc9795671b095b6bfaf5bfc547b
[2019-11-24 22:24:24,304 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-24 22:24:24,321 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-24 22:24:24,324 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-24 22:24:24,331 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-24 22:24:24,331 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-24 22:24:24,332 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c
[2019-11-24 22:24:24,435 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99a9d057/d4065f3c890448f0843de7296088ab75/FLAG24865fe57
[2019-11-24 22:24:25,148 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-24 22:24:25,149 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c
[2019-11-24 22:24:25,159 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99a9d057/d4065f3c890448f0843de7296088ab75/FLAG24865fe57
[2019-11-24 22:24:25,458 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99a9d057/d4065f3c890448f0843de7296088ab75
[2019-11-24 22:24:25,461 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-24 22:24:25,463 INFO  L131        ToolchainWalker]: Walking toolchain with 2 elements.
[2019-11-24 22:24:25,469 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-24 22:24:25,470 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-24 22:24:25,472 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-24 22:24:25,473 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,481 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab76006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25, skipping insertion in model container
[2019-11-24 22:24:25,481 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,492 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-24 22:24:25,526 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-24 22:24:25,798 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 22:24:25,805 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-24 22:24:25,821 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 22:24:25,836 INFO  L208         MainTranslator]: Completed translation
[2019-11-24 22:24:25,836 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25 WrapperNode
[2019-11-24 22:24:25,837 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-24 22:24:25,837 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-24 22:24:25,838 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-24 22:24:25,838 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-24 22:24:25,916 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,916 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,921 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,921 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,928 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,931 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,935 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:25" (1/1) ...
[2019-11-24 22:24:25,936 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-24 22:24:25,944 INFO  L168              Benchmark]: Toolchain (without parser) took 476.67 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 961.7 MB in the beginning and 991.3 MB in the end (delta: -29.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 12.5 GB.
[2019-11-24 22:24:25,945 INFO  L168              Benchmark]: CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB.
[2019-11-24 22:24:25,948 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 367.88 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB.
[2019-11-24 22:24:25,950 INFO  L168              Benchmark]: Boogie Preprocessor took 100.08 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 991.3 MB in the end (delta: -41.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB.
[2019-11-24 22:24:25,954 INFO  L335   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.95 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB.
 * CACSL2BoogieTranslator took 367.88 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB.
 * Boogie Preprocessor took 100.08 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 991.3 MB in the end (delta: -41.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB.
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...

### Bit-precise run ###
This is Ultimate 0.1.24-32f2683
[2019-11-24 22:24:28,883 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-24 22:24:28,885 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-24 22:24:28,906 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-24 22:24:28,907 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-24 22:24:28,908 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-24 22:24:28,910 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-24 22:24:28,932 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-24 22:24:28,937 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-24 22:24:28,942 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-24 22:24:28,944 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-24 22:24:28,947 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-24 22:24:28,948 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-24 22:24:28,951 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-24 22:24:28,952 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-24 22:24:28,955 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-24 22:24:28,957 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-24 22:24:28,959 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-24 22:24:28,963 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-24 22:24:28,966 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-24 22:24:28,973 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-24 22:24:28,978 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-24 22:24:28,979 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-24 22:24:28,980 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-24 22:24:28,986 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-24 22:24:28,989 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-24 22:24:28,989 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-24 22:24:28,991 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-24 22:24:28,991 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-24 22:24:28,992 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-24 22:24:28,992 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-24 22:24:28,994 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-24 22:24:28,995 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-24 22:24:28,997 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-24 22:24:28,999 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-24 22:24:29,000 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-24 22:24:29,001 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-24 22:24:29,001 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-24 22:24:29,002 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-24 22:24:29,004 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-24 22:24:29,005 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-24 22:24:29,006 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf
[2019-11-24 22:24:29,036 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-24 22:24:29,036 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-24 22:24:29,040 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-24 22:24:29,041 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-24 22:24:29,041 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-24 22:24:29,041 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-24 22:24:29,041 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2019-11-24 22:24:29,042 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-24 22:24:29,042 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-24 22:24:29,042 INFO  L138        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2019-11-24 22:24:29,043 INFO  L138        SettingsManager]:  * Bitprecise bitfields=true
[2019-11-24 22:24:29,043 INFO  L138        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2019-11-24 22:24:29,043 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-24 22:24:29,044 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2019-11-24 22:24:29,046 INFO  L138        SettingsManager]:  * Use bitvectors instead of ints=true
[2019-11-24 22:24:29,046 INFO  L138        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2019-11-24 22:24:29,046 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-24 22:24:29,046 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-24 22:24:29,047 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-24 22:24:29,047 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-24 22:24:29,047 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-24 22:24:29,047 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 22:24:29,047 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-24 22:24:29,049 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-24 22:24:29,049 INFO  L138        SettingsManager]:  * Trace refinement strategy=WOLF
[2019-11-24 22:24:29,049 INFO  L138        SettingsManager]:  * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt 
[2019-11-24 22:24:29,049 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-24 22:24:29,049 INFO  L138        SettingsManager]:  * Logic for external solver=AUFBV
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )


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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce492abcc29ddbc9795671b095b6bfaf5bfc547b
[2019-11-24 22:24:29,529 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-24 22:24:29,546 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-24 22:24:29,552 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-24 22:24:29,554 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-24 22:24:29,555 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-24 22:24:29,557 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c
[2019-11-24 22:24:29,666 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09b03080/8687507aeacf40c9a67065196be61987/FLAGc1f94b947
[2019-11-24 22:24:30,349 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-24 22:24:30,353 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1a-2.c
[2019-11-24 22:24:30,366 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09b03080/8687507aeacf40c9a67065196be61987/FLAGc1f94b947
[2019-11-24 22:24:30,699 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e09b03080/8687507aeacf40c9a67065196be61987
[2019-11-24 22:24:30,704 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-24 22:24:30,706 INFO  L131        ToolchainWalker]: Walking toolchain with 2 elements.
[2019-11-24 22:24:30,712 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-24 22:24:30,713 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-24 22:24:30,716 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-24 22:24:30,716 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:24:30" (1/1) ...
[2019-11-24 22:24:30,719 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b198c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:30, skipping insertion in model container
[2019-11-24 22:24:30,719 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:24:30" (1/1) ...
[2019-11-24 22:24:30,730 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-24 22:24:30,749 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-24 22:24:31,037 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 22:24:31,044 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-24 22:24:31,063 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 22:24:31,076 INFO  L208         MainTranslator]: Completed translation
[2019-11-24 22:24:31,076 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31 WrapperNode
[2019-11-24 22:24:31,077 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-24 22:24:31,078 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-24 22:24:31,078 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-24 22:24:31,078 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-24 22:24:31,152 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,153 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,160 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,160 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,166 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,168 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,170 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:24:31" (1/1) ...
[2019-11-24 22:24:31,171 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-24 22:24:31,177 INFO  L168              Benchmark]: Toolchain (without parser) took 467.34 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 961.7 MB in the beginning and 995.6 MB in the end (delta: -33.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 12.5 GB.
[2019-11-24 22:24:31,179 INFO  L168              Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB.
[2019-11-24 22:24:31,180 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 365.27 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB.
[2019-11-24 22:24:31,182 INFO  L168              Benchmark]: Boogie Preprocessor took 93.38 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 995.6 MB in the end (delta: -45.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB.
[2019-11-24 22:24:31,187 INFO  L335   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.61 ms. Allocated memory is still 1.0 GB. Free memory is still 988.9 MB. There was no memory consumed. Max. memory is 12.5 GB.
 * CACSL2BoogieTranslator took 365.27 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 950.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 12.5 GB.
 * Boogie Preprocessor took 93.38 ms. Allocated memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 65.5 kB). Free memory was 950.2 MB in the beginning and 995.6 MB in the end (delta: -45.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 12.5 GB.
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...