./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 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/memsafety-ext3/naturalNumbers1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-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 32bit --witnessprinter.graph.data.programhash 932f76685ed1816d93a388d0ab1addae9c51483a ............................................................................................................................. 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/memsafety-ext3/naturalNumbers1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-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 32bit --witnessprinter.graph.data.programhash 932f76685ed1816d93a388d0ab1addae9c51483a .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:24:11,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:24:11,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:24:11,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:24:11,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:24:11,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:24:11,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:24:11,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:24:11,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:24:11,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:24:11,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:24:11,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:24:11,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:24:11,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:24:11,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:24:11,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:24:11,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:24:11,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:24:11,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:24:11,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:24:11,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:24:11,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:24:11,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:24:11,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:24:11,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:24:11,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:24:11,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:24:11,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:24:11,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:24:11,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:24:11,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:24:11,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:24:11,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:24:11,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:24:11,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:24:11,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:24:11,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:24:11,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:24:11,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:24:11,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:24:11,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:24:11,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:24:11,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:24:11,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:24:11,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:24:11,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:24:11,658 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:24:11,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:24:11,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:24:11,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:24:11,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:24:11,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:24:11,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:24:11,659 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:24:11,660 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:24:11,660 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:24:11,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:24:11,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:24:11,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:24:11,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:24:11,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:24:11,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:24:11,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:24:11,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:24:11,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:24:11,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:24:11,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:24:11,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:24:11,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:24:11,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:24:11,663 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-10-19 18:24:11,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:24:12,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:24:12,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:24:12,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:24:12,021 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:24:12,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-19 18:24:12,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd3dcc67/0cbffc14f56d4a479bd82dddee22cdef/FLAGf21f8a17a [2020-10-19 18:24:12,485 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:24:12,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-19 18:24:12,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd3dcc67/0cbffc14f56d4a479bd82dddee22cdef/FLAGf21f8a17a [2020-10-19 18:24:12,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd3dcc67/0cbffc14f56d4a479bd82dddee22cdef [2020-10-19 18:24:12,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:24:12,866 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:24:12,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:12,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:24:12,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:24:12,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:12" (1/1) ... [2020-10-19 18:24:12,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bbebd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:12, skipping insertion in model container [2020-10-19 18:24:12,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:12" (1/1) ... [2020-10-19 18:24:12,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:24:12,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:24:13,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:13,107 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-10-19 18:24:13,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34c6ff41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:13, skipping insertion in model container [2020-10-19 18:24:13,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:13,109 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2020-10-19 18:24:13,112 INFO L168 Benchmark]: Toolchain (without parser) took 250.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:13,113 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:13,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.78 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:13,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.78 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:24:14,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:24:14,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:24:15,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:24:15,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:24:15,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:24:15,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:24:15,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:24:15,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:24:15,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:24:15,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:24:15,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:24:15,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:24:15,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:24:15,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:24:15,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:24:15,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:24:15,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:24:15,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:24:15,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:24:15,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:24:15,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:24:15,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:24:15,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:24:15,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:24:15,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:24:15,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:24:15,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:24:15,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:24:15,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:24:15,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:24:15,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:24:15,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:24:15,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:24:15,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:24:15,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:24:15,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:24:15,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:24:15,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:24:15,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:24:15,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:24:15,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:24:15,126 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:24:15,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:24:15,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:24:15,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:24:15,129 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:24:15,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:24:15,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:24:15,130 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:24:15,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:24:15,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:24:15,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:24:15,132 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:24:15,132 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:24:15,133 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:24:15,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:24:15,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:24:15,134 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:24:15,134 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:24:15,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:24:15,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:24:15,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:24:15,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:24:15,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:24:15,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:24:15,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:24:15,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:24:15,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:24:15,137 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:24:15,137 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:24:15,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:24:15,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:24:15,138 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-10-19 18:24:15,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:24:15,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:24:15,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:24:15,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:24:15,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:24:15,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-19 18:24:15,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404935789/c2e42e0ed45040a783aceb7d176c7a1b/FLAG120cd93c1 [2020-10-19 18:24:15,995 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:24:15,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-10-19 18:24:16,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404935789/c2e42e0ed45040a783aceb7d176c7a1b/FLAG120cd93c1 [2020-10-19 18:24:16,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/404935789/c2e42e0ed45040a783aceb7d176c7a1b [2020-10-19 18:24:16,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:24:16,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:24:16,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:16,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:24:16,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:24:16,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dadf030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16, skipping insertion in model container [2020-10-19 18:24:16,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:24:16,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:24:16,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:16,650 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-10-19 18:24:16,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:24:16,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:16,665 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:24:16,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:24:16,772 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:24:16,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16 WrapperNode [2020-10-19 18:24:16,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:24:16,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:24:16,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:24:16,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:24:16,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... [2020-10-19 18:24:16,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:24:16,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:24:16,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:24:16,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:24:16,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:24:16,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:24:16,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:24:16,920 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2020-10-19 18:24:16,920 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:24:16,921 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2020-10-19 18:24:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:24:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:24:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:24:16,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:24:16,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:24:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:24:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:24:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:24:16,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:24:16,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:24:17,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:24:17,212 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-19 18:24:17,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:17 BoogieIcfgContainer [2020-10-19 18:24:17,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:24:17,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:24:17,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:24:17,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:24:17,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:24:16" (1/3) ... [2020-10-19 18:24:17,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1a9c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:24:17, skipping insertion in model container [2020-10-19 18:24:17,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:24:16" (2/3) ... [2020-10-19 18:24:17,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1a9c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:24:17, skipping insertion in model container [2020-10-19 18:24:17,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:17" (3/3) ... [2020-10-19 18:24:17,225 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-10-19 18:24:17,239 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:24:17,247 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-19 18:24:17,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-19 18:24:17,290 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:24:17,290 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:24:17,290 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:24:17,291 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:24:17,291 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:24:17,293 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:24:17,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:24:17,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:24:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-19 18:24:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:24:17,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:17,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:17,332 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2020-10-19 18:24:17,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:24:17,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24234257] [2020-10-19 18:24:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 18:24:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:17,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:24:17,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:17,507 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:24:17,508 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:24:17,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:24:17,524 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:24:17,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:24:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:17,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:24:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:17,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24234257] [2020-10-19 18:24:17,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:17,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 18:24:17,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710988496] [2020-10-19 18:24:17,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:24:17,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:24:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:24:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:24:17,606 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-19 18:24:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:17,705 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-10-19 18:24:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:24:17,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-19 18:24:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:17,718 INFO L225 Difference]: With dead ends: 21 [2020-10-19 18:24:17,718 INFO L226 Difference]: Without dead ends: 18 [2020-10-19 18:24:17,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:24:17,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-19 18:24:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-19 18:24:17,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 18:24:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-19 18:24:17,759 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-10-19 18:24:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:17,760 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-19 18:24:17,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:24:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-19 18:24:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:24:17,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:17,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:17,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:24:17,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:17,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:17,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2020-10-19 18:24:17,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:24:17,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160238088] [2020-10-19 18:24:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 18:24:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:18,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:24:18,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:18,070 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:24:18,071 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:24:18,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:24:18,080 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:24:18,080 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:24:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:18,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:24:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:18,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160238088] [2020-10-19 18:24:18,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:18,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:24:18,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61720008] [2020-10-19 18:24:18,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:24:18,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:24:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:24:18,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:24:18,440 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-10-19 18:24:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:18,783 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-19 18:24:18,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:24:18,785 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-10-19 18:24:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:18,790 INFO L225 Difference]: With dead ends: 28 [2020-10-19 18:24:18,791 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:24:18,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:24:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:24:18,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-10-19 18:24:18,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:24:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-19 18:24:18,804 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2020-10-19 18:24:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:18,806 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-19 18:24:18,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:24:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-19 18:24:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:24:18,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:18,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:19,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:24:19,009 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:19,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:19,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2020-10-19 18:24:19,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:24:19,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144900989] [2020-10-19 18:24:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 18:24:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:24:19,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:24:19,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:24:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:19,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:24:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:24:19,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144900989] [2020-10-19 18:24:19,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:24:19,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2020-10-19 18:24:19,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120271917] [2020-10-19 18:24:19,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:24:19,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:24:19,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:24:19,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:24:19,620 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 11 states. [2020-10-19 18:24:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:24:19,959 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-10-19 18:24:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:24:19,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-10-19 18:24:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:24:19,963 INFO L225 Difference]: With dead ends: 25 [2020-10-19 18:24:19,964 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:24:19,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:24:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:24:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 18:24:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:24:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-19 18:24:19,970 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-19 18:24:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:24:19,971 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-19 18:24:19,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:24:19,972 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-19 18:24:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:24:19,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:24:19,973 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:24:20,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:24:20,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2020-10-19 18:24:20,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:24:20,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2020-10-19 18:24:20,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:24:20,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182379204] [2020-10-19 18:24:20,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 18:24:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:24:20,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:24:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:24:20,269 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:24:20,293 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 18:24:20,293 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:24:20,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:24:20,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:24:20 BoogieIcfgContainer [2020-10-19 18:24:20,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:24:20,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:24:20,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:24:20,534 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:24:20,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:24:17" (3/4) ... [2020-10-19 18:24:20,540 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:24:20,587 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:24:20,587 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:24:20,589 INFO L168 Benchmark]: Toolchain (without parser) took 4203.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 950.6 MB in the beginning and 958.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 126.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:20,589 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:20,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:20,591 INFO L168 Benchmark]: Boogie Preprocessor took 49.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:20,591 INFO L168 Benchmark]: RCFGBuilder took 391.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:20,592 INFO L168 Benchmark]: TraceAbstraction took 3313.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.7 MB in the end (delta: 145.7 MB). Peak memory consumption was 145.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:24:20,592 INFO L168 Benchmark]: Witness Printer took 56.23 ms. Allocated memory is still 1.2 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:24:20,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 382.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 391.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3313.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.7 MB in the end (delta: 145.7 MB). Peak memory consumption was 145.7 MB. Max. memory is 11.5 GB. * Witness Printer took 56.23 ms. Allocated memory is still 1.2 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; VAL [numbers={3:0}] [L15] CALL areNatural((int*) numbers) VAL [numbers={3:0}] [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 63 SDslu, 105 SDs, 0 SdLazy, 110 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 8294 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...