./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 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:12:35,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:12:35,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:12:35,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:12:35,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:12:35,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:12:35,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:12:35,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:12:35,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:12:35,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:12:35,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:12:35,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:12:35,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:12:35,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:12:35,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:12:35,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:12:35,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:12:35,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:12:35,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:12:35,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:12:35,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:12:35,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:12:35,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:12:35,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:12:35,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:12:35,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:12:35,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:12:35,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:12:35,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:12:35,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:12:35,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:12:35,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:12:35,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:12:35,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:12:35,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:12:35,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:12:35,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:12:35,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:12:35,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:12:35,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:12:35,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:12:35,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:12:35,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:12:35,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:12:35,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:12:35,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:12:35,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:12:35,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:12:35,771 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:12:35,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:12:35,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:12:35,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:12:35,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:12:35,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:12:35,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:12:35,772 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:12:35,773 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:12:35,773 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:12:35,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:12:35,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:12:35,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:12:35,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:12:35,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:35,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:12:35,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:12:35,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2021-08-30 19:12:36,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:12:36,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:12:36,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:12:36,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:12:36,050 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:12:36,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-08-30 19:12:36,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1380ce19/b57aab20e47d4a52a646820f0e499bf7/FLAG51a57508a [2021-08-30 19:12:36,422 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:12:36,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-08-30 19:12:36,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1380ce19/b57aab20e47d4a52a646820f0e499bf7/FLAG51a57508a [2021-08-30 19:12:36,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1380ce19/b57aab20e47d4a52a646820f0e499bf7 [2021-08-30 19:12:36,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:12:36,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:12:36,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:36,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:12:36,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:12:36,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:36" (1/1) ... [2021-08-30 19:12:36,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737e4eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:36, skipping insertion in model container [2021-08-30 19:12:36,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:36" (1/1) ... [2021-08-30 19:12:36,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:12:36,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:12:36,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:36,981 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) [2021-08-30 19:12:36,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ff1c571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:36, skipping insertion in model container [2021-08-30 19:12:36,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:36,982 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 19:12:36,984 INFO L158 Benchmark]: Toolchain (without parser) took 116.27ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 35.4MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:12:36,984 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 44.7MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:36,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 114.74ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 35.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:12:36,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 44.7MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 114.74ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 35.5MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:12:38,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:12:38,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:12:38,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:12:38,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:12:38,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:12:38,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:12:38,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:12:38,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:12:38,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:12:38,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:12:38,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:12:38,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:12:38,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:12:38,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:12:38,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:12:38,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:12:38,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:12:38,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:12:38,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:12:38,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:12:38,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:12:38,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:12:38,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:12:38,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:12:38,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:12:38,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:12:38,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:12:38,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:12:38,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:12:38,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:12:38,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:12:38,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:12:38,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:12:38,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:12:38,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:12:38,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:12:38,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:12:38,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:12:38,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:12:38,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:12:38,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 19:12:38,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:12:38,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:12:38,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:12:38,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:12:38,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:12:38,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:12:38,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:12:38,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:12:38,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:38,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 19:12:38,346 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2021-08-30 19:12:38,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:12:38,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:12:38,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:12:38,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:12:38,574 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:12:38,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-08-30 19:12:38,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8002f8648/1baf5851ed154c1982797dc8b8fc5015/FLAG1f758852f [2021-08-30 19:12:38,973 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:12:38,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-08-30 19:12:38,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8002f8648/1baf5851ed154c1982797dc8b8fc5015/FLAG1f758852f [2021-08-30 19:12:38,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8002f8648/1baf5851ed154c1982797dc8b8fc5015 [2021-08-30 19:12:38,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:12:38,995 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:12:38,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:38,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:12:39,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:12:39,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:38" (1/1) ... [2021-08-30 19:12:39,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be94883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39, skipping insertion in model container [2021-08-30 19:12:39,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:38" (1/1) ... [2021-08-30 19:12:39,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:12:39,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:12:39,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:39,100 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 19:12:39,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:12:39,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:39,107 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:12:39,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:39,136 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:12:39,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39 WrapperNode [2021-08-30 19:12:39,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:39,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:12:39,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:12:39,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:12:39,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:12:39,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:12:39,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:12:39,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:12:39,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (1/1) ... [2021-08-30 19:12:39,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:39,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:39,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 19:12:39,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 19:12:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:12:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:12:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2021-08-30 19:12:39,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:12:39,225 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 19:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 19:12:39,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:12:39,326 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 19:12:39,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:39 BoogieIcfgContainer [2021-08-30 19:12:39,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:12:39,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:12:39,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:12:39,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:12:39,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:38" (1/3) ... [2021-08-30 19:12:39,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1736d70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:39, skipping insertion in model container [2021-08-30 19:12:39,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:39" (2/3) ... [2021-08-30 19:12:39,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1736d70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:39, skipping insertion in model container [2021-08-30 19:12:39,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:39" (3/3) ... [2021-08-30 19:12:39,333 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2021-08-30 19:12:39,336 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:12:39,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-30 19:12:39,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:12:39,366 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 19:12:39,366 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-30 19:12:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:12:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 19:12:39,378 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:39,378 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:39,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting areNaturalErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-08-30 19:12:39,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:39,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2021-08-30 19:12:39,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:12:39,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314003662] [2021-08-30 19:12:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:39,390 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:12:39,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:12:39,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 19:12:39,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 19:12:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:39,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 19:12:39,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:39,574 INFO L388 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 [2021-08-30 19:12:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:39,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:39,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:12:39,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314003662] [2021-08-30 19:12:39,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314003662] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:39,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:39,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 19:12:39,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567121248] [2021-08-30 19:12:39,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 19:12:39,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:12:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 19:12:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 19:12:39,671 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:39,740 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-08-30 19:12:39,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 19:12:39,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 19:12:39,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:39,748 INFO L225 Difference]: With dead ends: 21 [2021-08-30 19:12:39,749 INFO L226 Difference]: Without dead ends: 18 [2021-08-30 19:12:39,752 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.63ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 19:12:39,770 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.76ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:39,771 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 17 Invalid, 50 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 46.76ms Time] [2021-08-30 19:12:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-30 19:12:39,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-30 19:12:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-08-30 19:12:39,795 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2021-08-30 19:12:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:39,796 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-08-30 19:12:39,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-08-30 19:12:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 19:12:39,798 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:39,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:39,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:40,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:12:40,008 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting areNaturalErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-08-30 19:12:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2021-08-30 19:12:40,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:12:40,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47643016] [2021-08-30 19:12:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:40,009 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:12:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:12:40,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 19:12:40,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 19:12:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 19:12:40,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:40,070 INFO L388 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 [2021-08-30 19:12:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:40,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:40,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:12:40,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47643016] [2021-08-30 19:12:40,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47643016] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:40,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:40,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 19:12:40,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713033666] [2021-08-30 19:12:40,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 19:12:40,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:12:40,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 19:12:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-30 19:12:40,296 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:40,529 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-08-30 19:12:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 19:12:40,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-30 19:12:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:40,531 INFO L225 Difference]: With dead ends: 28 [2021-08-30 19:12:40,531 INFO L226 Difference]: Without dead ends: 28 [2021-08-30 19:12:40,532 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 167.49ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:12:40,533 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 147.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.80ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:40,533 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 19 Invalid, 84 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 166.80ms Time] [2021-08-30 19:12:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-30 19:12:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-08-30 19:12:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-08-30 19:12:40,536 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2021-08-30 19:12:40,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:40,537 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-08-30 19:12:40,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 19:12:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-08-30 19:12:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 19:12:40,537 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:40,537 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:40,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:40,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:12:40,746 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-08-30 19:12:40,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:40,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2021-08-30 19:12:40,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:12:40,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68154620] [2021-08-30 19:12:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:40,747 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:12:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:12:40,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 19:12:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 19:12:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:12:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-30 19:12:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:12:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:40,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:12:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:12:41,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:12:41,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68154620] [2021-08-30 19:12:41,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68154620] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 19:12:41,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:12:41,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-08-30 19:12:41,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909785601] [2021-08-30 19:12:41,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 19:12:41,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:12:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 19:12:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-30 19:12:41,263 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:12:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:12:41,380 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-08-30 19:12:41,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 19:12:41,381 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 15 [2021-08-30 19:12:41,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:12:41,382 INFO L225 Difference]: With dead ends: 25 [2021-08-30 19:12:41,382 INFO L226 Difference]: Without dead ends: 23 [2021-08-30 19:12:41,382 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 189.44ms TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-30 19:12:41,383 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.86ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 112.71ms IncrementalHoareTripleChecker+Time [2021-08-30 19:12:41,383 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 78 Unknown, 0 Unchecked, 0.86ms Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 24 Unchecked, 112.71ms Time] [2021-08-30 19:12:41,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-30 19:12:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-30 19:12:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-30 19:12:41,388 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2021-08-30 19:12:41,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:12:41,388 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-30 19:12:41,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:12:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-30 19:12:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 19:12:41,389 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:41,389 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:41,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:41,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:12:41,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting areNaturalErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-08-30 19:12:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:41,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2021-08-30 19:12:41,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:12:41,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768827767] [2021-08-30 19:12:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:41,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:12:41,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:12:41,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 19:12:41,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 19:12:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 19:12:41,630 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 19:12:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 19:12:41,681 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 19:12:41,681 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 19:12:41,682 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location areNaturalErr1REQUIRES_VIOLATION (2 of 3 remaining) [2021-08-30 19:12:41,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2021-08-30 19:12:41,683 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location areNaturalErr0REQUIRES_VIOLATION (0 of 3 remaining) [2021-08-30 19:12:41,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 19:12:41,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:12:41,888 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:12:41,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:12:41 BoogieIcfgContainer [2021-08-30 19:12:41,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:12:41,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:12:41,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:12:41,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:12:41,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:39" (3/4) ... [2021-08-30 19:12:41,903 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 19:12:41,929 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:12:41,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:12:41,930 INFO L158 Benchmark]: Toolchain (without parser) took 2935.39ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 48.7MB in the beginning and 36.0MB in the end (delta: 12.7MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-08-30 19:12:41,931 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:41,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.64ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 51.7MB in the end (delta: -3.1MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-08-30 19:12:41,932 INFO L158 Benchmark]: Boogie Preprocessor took 30.68ms. Allocated memory is still 67.1MB. Free memory was 51.7MB in the beginning and 50.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:12:41,932 INFO L158 Benchmark]: RCFGBuilder took 158.65ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 40.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-30 19:12:41,932 INFO L158 Benchmark]: TraceAbstraction took 2572.86ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 40.2MB in the beginning and 38.1MB in the end (delta: 2.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-08-30 19:12:41,932 INFO L158 Benchmark]: Witness Printer took 27.52ms. Allocated memory is still 81.8MB. Free memory was 38.1MB in the beginning and 36.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:12:41,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.64ms. Allocated memory is still 67.1MB. Free memory was 48.6MB in the beginning and 51.7MB in the end (delta: -3.1MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.68ms. Allocated memory is still 67.1MB. Free memory was 51.7MB in the beginning and 50.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 158.65ms. Allocated memory is still 67.1MB. Free memory was 50.0MB in the beginning and 40.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2572.86ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 40.2MB in the beginning and 38.1MB in the end (delta: 2.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Witness Printer took 27.52ms. Allocated memory is still 81.8MB. Free memory was 38.1MB in the beginning and 36.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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] - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 4]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2526.20ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 8.25ms, AutomataDifference: 483.41ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.31ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 326.27ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 280.22ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24 IncrementalHoareTripleChecker+Unchecked, 124 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 14 mSDtfsCounter, 181 mSolverCounterSat, 4.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 381.56ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 17.15ms AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.36ms SsaConstructionTime, 54.94ms SatisfiabilityAnalysisTime, 927.69ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 680 SizeOfPredicates, 10 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! [2021-08-30 19:12:41,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...