./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 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/ldv-memsafety/memleaks_test13_1.i -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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:22:42,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:22:42,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:22:42,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:22:42,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:22:42,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:22:42,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:22:42,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:22:42,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:22:42,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:22:42,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:22:42,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:22:42,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:22:42,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:22:42,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:22:42,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:22:42,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:22:42,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:22:42,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:22:42,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:22:42,213 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:22:42,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:22:42,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:22:42,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:22:42,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:22:42,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:22:42,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:22:42,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:22:42,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:22:42,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:22:42,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:22:42,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:22:42,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:22:42,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:22:42,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:22:42,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:22:42,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:22:42,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:22:42,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:22:42,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:22:42,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:22:42,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:22:42,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:22:42,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:22:42,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:22:42,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:22:42,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:22:42,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:22:42,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:22:42,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:22:42,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:22:42,243 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:22:42,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:22:42,244 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:22:42,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:22:42,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:22:42,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:22:42,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:22:42,244 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:22:42,245 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:22:42,245 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:22:42,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:22:42,245 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:22:42,245 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:22:42,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:22:42,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:22:42,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:22:42,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:22:42,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:22:42,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:22:42,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:22:42,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:22:42,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:22:42,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2022-07-21 17:22:42,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:22:42,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:22:42,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:22:42,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:22:42,506 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:22:42,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2022-07-21 17:22:42,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db96fb9df/60182c6b7af74692bbabe3974440d007/FLAG2936c1849 [2022-07-21 17:22:42,959 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:22:42,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2022-07-21 17:22:42,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db96fb9df/60182c6b7af74692bbabe3974440d007/FLAG2936c1849 [2022-07-21 17:22:42,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db96fb9df/60182c6b7af74692bbabe3974440d007 [2022-07-21 17:22:42,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:22:42,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:22:43,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:22:43,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:22:43,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:22:43,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:22:42" (1/1) ... [2022-07-21 17:22:43,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d39e4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:43, skipping insertion in model container [2022-07-21 17:22:43,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:22:42" (1/1) ... [2022-07-21 17:22:43,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:22:43,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:22:43,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:22:43,393 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-21 17:22:43,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79b21252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:43, skipping insertion in model container [2022-07-21 17:22:43,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:22:43,394 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-21 17:22:43,396 INFO L158 Benchmark]: Toolchain (without parser) took 395.58ms. Allocated memory is still 67.1MB. Free memory was 47.0MB in the beginning and 47.2MB in the end (delta: -179.1kB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-07-21 17:22:43,397 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:22:43,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.18ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 47.2MB in the end (delta: -352.4kB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-07-21 17:22:43,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.18ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 47.2MB in the end (delta: -352.4kB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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/ldv-memsafety/memleaks_test13_1.i -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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:22:44,761 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:22:44,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:22:44,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:22:44,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:22:44,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:22:44,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:22:44,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:22:44,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:22:44,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:22:44,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:22:44,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:22:44,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:22:44,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:22:44,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:22:44,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:22:44,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:22:44,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:22:44,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:22:44,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:22:44,828 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:22:44,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:22:44,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:22:44,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:22:44,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:22:44,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:22:44,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:22:44,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:22:44,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:22:44,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:22:44,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:22:44,836 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:22:44,837 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:22:44,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:22:44,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:22:44,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:22:44,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:22:44,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:22:44,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:22:44,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:22:44,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:22:44,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:22:44,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-21 17:22:44,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:22:44,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:22:44,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:22:44,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:22:44,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:22:44,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:22:44,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:22:44,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:22:44,869 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:22:44,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:22:44,870 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:22:44,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:22:44,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:22:44,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:22:44,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:22:44,870 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 17:22:44,871 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:22:44,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:22:44,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:22:44,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:22:44,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:22:44,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:22:44,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:22:44,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:22:44,873 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 17:22:44,873 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 17:22:44,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 17:22:44,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2022-07-21 17:22:45,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:22:45,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:22:45,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:22:45,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:22:45,153 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:22:45,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2022-07-21 17:22:45,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a116eddd7/03b2fd4acda84b6d9bc312fde6b83509/FLAG5ddf3ee83 [2022-07-21 17:22:45,564 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:22:45,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2022-07-21 17:22:45,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a116eddd7/03b2fd4acda84b6d9bc312fde6b83509/FLAG5ddf3ee83 [2022-07-21 17:22:45,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a116eddd7/03b2fd4acda84b6d9bc312fde6b83509 [2022-07-21 17:22:45,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:22:45,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:22:45,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:22:45,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:22:45,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:22:45,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:22:45" (1/1) ... [2022-07-21 17:22:45,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf7e2cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:45, skipping insertion in model container [2022-07-21 17:22:45,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:22:45" (1/1) ... [2022-07-21 17:22:45,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:22:45,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:22:45,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:22:45,989 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 17:22:45,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:22:46,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:22:46,057 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:22:46,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:22:46,124 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:22:46,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46 WrapperNode [2022-07-21 17:22:46,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:22:46,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:22:46,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:22:46,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:22:46,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,170 INFO L137 Inliner]: procedures = 166, calls = 74, calls flagged for inlining = 21, calls inlined = 4, statements flattened = 22 [2022-07-21 17:22:46,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:22:46,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:22:46,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:22:46,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:22:46,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:22:46,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:22:46,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:22:46,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:22:46,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (1/1) ... [2022-07-21 17:22:46,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:22:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:22:46,214 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) [2022-07-21 17:22:46,248 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 [2022-07-21 17:22:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-07-21 17:22:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-07-21 17:22:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-21 17:22:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-21 17:22:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 17:22:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 17:22:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-07-21 17:22:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-07-21 17:22:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 17:22:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:22:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 17:22:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 17:22:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 17:22:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:22:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:22:46,341 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:22:46,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:22:46,615 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:22:46,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:22:46,620 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 17:22:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:22:46 BoogieIcfgContainer [2022-07-21 17:22:46,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:22:46,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:22:46,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:22:46,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:22:46,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:22:45" (1/3) ... [2022-07-21 17:22:46,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abcd31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:22:46, skipping insertion in model container [2022-07-21 17:22:46,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:22:46" (2/3) ... [2022-07-21 17:22:46,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abcd31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:22:46, skipping insertion in model container [2022-07-21 17:22:46,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:22:46" (3/3) ... [2022-07-21 17:22:46,629 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2022-07-21 17:22:46,640 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:22:46,640 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-07-21 17:22:46,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:22:46,673 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f531574, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4be0d0ec [2022-07-21 17:22:46,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-07-21 17:22:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 25 states have (on average 1.68) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 17:22:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:22:46,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:46,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:46,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:46,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1806778067, now seen corresponding path program 1 times [2022-07-21 17:22:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:46,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411852726] [2022-07-21 17:22:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:46,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:46,698 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) [2022-07-21 17:22:46,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 17:22:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:46,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 17:22:46,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:22:46,943 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-21 17:22:46,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-21 17:22:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:22:47,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:22:47,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:22:47,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411852726] [2022-07-21 17:22:47,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411852726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:22:47,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:22:47,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:22:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429231600] [2022-07-21 17:22:47,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:22:47,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 17:22:47,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:22:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 17:22:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 17:22:47,044 INFO L87 Difference]: Start difference. First operand has 49 states, 25 states have (on average 1.68) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:22:47,272 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2022-07-21 17:22:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:22:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-21 17:22:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:22:47,280 INFO L225 Difference]: With dead ends: 50 [2022-07-21 17:22:47,280 INFO L226 Difference]: Without dead ends: 48 [2022-07-21 17:22:47,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:22:47,288 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 106 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:22:47,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 60 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-07-21 17:22:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-21 17:22:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-07-21 17:22:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.625) internal successors, (39), 38 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 17:22:47,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2022-07-21 17:22:47,321 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 12 [2022-07-21 17:22:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:22:47,321 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2022-07-21 17:22:47,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2022-07-21 17:22:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 17:22:47,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:47,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:47,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 17:22:47,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:22:47,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:47,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:47,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1806778068, now seen corresponding path program 1 times [2022-07-21 17:22:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:47,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [557917096] [2022-07-21 17:22:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:47,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:47,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:47,533 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) [2022-07-21 17:22:47,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 17:22:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:47,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 17:22:47,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:22:49,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:22:49,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 17:22:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:22:49,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:22:49,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:22:49,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [557917096] [2022-07-21 17:22:49,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [557917096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:22:49,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:22:49,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:22:49,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746454366] [2022-07-21 17:22:49,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:22:49,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:22:49,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:22:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:22:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2022-07-21 17:22:49,808 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:22:56,198 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2022-07-21 17:22:56,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 17:22:56,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-21 17:22:56,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:22:56,200 INFO L225 Difference]: With dead ends: 66 [2022-07-21 17:22:56,201 INFO L226 Difference]: Without dead ends: 66 [2022-07-21 17:22:56,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=64, Invalid=142, Unknown=4, NotChecked=0, Total=210 [2022-07-21 17:22:56,202 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 110 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:22:56,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 90 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-07-21 17:22:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-21 17:22:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2022-07-21 17:22:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 37 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 17:22:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-07-21 17:22:56,208 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 12 [2022-07-21 17:22:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:22:56,208 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-07-21 17:22:56,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-07-21 17:22:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 17:22:56,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:56,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:56,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 17:22:56,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:22:56,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 177362515, now seen corresponding path program 1 times [2022-07-21 17:22:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315621297] [2022-07-21 17:22:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:56,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:56,422 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) [2022-07-21 17:22:56,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 17:22:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:56,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:22:56,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:22:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:22:56,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:22:56,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:22:56,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315621297] [2022-07-21 17:22:56,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315621297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:22:56,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:22:56,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:22:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481380852] [2022-07-21 17:22:56,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:22:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:22:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:22:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:22:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:22:56,477 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:22:56,493 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2022-07-21 17:22:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:22:56,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-07-21 17:22:56,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:22:56,495 INFO L225 Difference]: With dead ends: 55 [2022-07-21 17:22:56,495 INFO L226 Difference]: Without dead ends: 55 [2022-07-21 17:22:56,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:22:56,496 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 4 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:22:56,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 186 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:22:56,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-21 17:22:56,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-07-21 17:22:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-21 17:22:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-07-21 17:22:56,516 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 13 [2022-07-21 17:22:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:22:56,516 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-07-21 17:22:56,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-07-21 17:22:56,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 17:22:56,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:56,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:56,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-21 17:22:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:22:56,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1630091948, now seen corresponding path program 1 times [2022-07-21 17:22:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:56,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232949598] [2022-07-21 17:22:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:56,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:56,720 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) [2022-07-21 17:22:56,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 17:22:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:56,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 17:22:56,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:22:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:22:56,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:22:56,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:22:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232949598] [2022-07-21 17:22:56,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232949598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:22:56,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:22:56,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:22:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641522917] [2022-07-21 17:22:56,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:22:56,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:22:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:22:56,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:22:56,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:22:56,831 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:56,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:22:56,975 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2022-07-21 17:22:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:22:56,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-07-21 17:22:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:22:56,977 INFO L225 Difference]: With dead ends: 47 [2022-07-21 17:22:56,977 INFO L226 Difference]: Without dead ends: 47 [2022-07-21 17:22:56,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:22:56,978 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 69 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:22:56,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 49 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:22:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-21 17:22:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-07-21 17:22:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 38 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-21 17:22:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2022-07-21 17:22:56,981 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 13 [2022-07-21 17:22:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:22:56,981 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2022-07-21 17:22:56,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2022-07-21 17:22:56,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 17:22:56,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:56,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:56,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 17:22:57,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:22:57,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1630091947, now seen corresponding path program 1 times [2022-07-21 17:22:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:57,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818003890] [2022-07-21 17:22:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:57,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:57,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:57,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:22:57,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 17:22:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 17:22:57,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:22:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:22:57,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:22:57,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:22:57,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818003890] [2022-07-21 17:22:57,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818003890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:22:57,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:22:57,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:22:57,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533866484] [2022-07-21 17:22:57,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:22:57,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:22:57,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:22:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:22:57,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:22:57,330 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:57,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:22:57,589 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2022-07-21 17:22:57,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:22:57,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-07-21 17:22:57,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:22:57,590 INFO L225 Difference]: With dead ends: 79 [2022-07-21 17:22:57,590 INFO L226 Difference]: Without dead ends: 79 [2022-07-21 17:22:57,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:22:57,591 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 60 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:22:57,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 147 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:22:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-21 17:22:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2022-07-21 17:22:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 54 states have internal predecessors, (62), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:22:57,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2022-07-21 17:22:57,595 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 13 [2022-07-21 17:22:57,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:22:57,596 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2022-07-21 17:22:57,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2022-07-21 17:22:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 17:22:57,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:57,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:57,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 17:22:57,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:22:57,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1195264903, now seen corresponding path program 1 times [2022-07-21 17:22:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:57,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240562938] [2022-07-21 17:22:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:57,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:57,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:57,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:22:57,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 17:22:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:57,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 17:22:57,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:22:57,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 17:22:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:22:57,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:22:57,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:22:57,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240562938] [2022-07-21 17:22:57,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240562938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:22:57,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:22:57,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:22:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502881272] [2022-07-21 17:22:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:22:57,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:22:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:22:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:22:57,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:22:57,931 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:22:58,134 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2022-07-21 17:22:58,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:22:58,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 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 15 [2022-07-21 17:22:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:22:58,135 INFO L225 Difference]: With dead ends: 77 [2022-07-21 17:22:58,135 INFO L226 Difference]: Without dead ends: 77 [2022-07-21 17:22:58,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-21 17:22:58,136 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:22:58,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 157 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:22:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-21 17:22:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 67. [2022-07-21 17:22:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 53 states have internal predecessors, (60), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:22:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-07-21 17:22:58,146 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 15 [2022-07-21 17:22:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:22:58,147 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-07-21 17:22:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:22:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-07-21 17:22:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 17:22:58,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:22:58,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:22:58,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 17:22:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:22:58,349 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:22:58,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:22:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1195264904, now seen corresponding path program 1 times [2022-07-21 17:22:58,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:22:58,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255817248] [2022-07-21 17:22:58,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:22:58,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:22:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:22:58,351 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:22:58,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 17:22:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:22:58,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-21 17:22:58,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 17:23:00,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 17:23:00,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 17:23:00,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-21 17:23:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:00,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:00,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:00,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255817248] [2022-07-21 17:23:00,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255817248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:00,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:00,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:23:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386869875] [2022-07-21 17:23:00,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 17:23:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 17:23:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2022-07-21 17:23:00,735 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:05,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:05,368 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2022-07-21 17:23:05,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 17:23:05,369 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 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 15 [2022-07-21 17:23:05,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:05,370 INFO L225 Difference]: With dead ends: 71 [2022-07-21 17:23:05,370 INFO L226 Difference]: Without dead ends: 71 [2022-07-21 17:23:05,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=95, Invalid=322, Unknown=3, NotChecked=0, Total=420 [2022-07-21 17:23:05,370 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 64 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:05,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 149 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 183 Invalid, 0 Unknown, 39 Unchecked, 0.3s Time] [2022-07-21 17:23:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-21 17:23:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2022-07-21 17:23:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.380952380952381) internal successors, (58), 52 states have internal predecessors, (58), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:23:05,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2022-07-21 17:23:05,374 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 15 [2022-07-21 17:23:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:05,374 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2022-07-21 17:23:05,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:05,375 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2022-07-21 17:23:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 17:23:05,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:05,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:05,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:05,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:05,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1601493656, now seen corresponding path program 1 times [2022-07-21 17:23:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:05,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240647368] [2022-07-21 17:23:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:05,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:05,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:05,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:05,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 17:23:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:05,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 17:23:05,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:05,632 INFO L390 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 [2022-07-21 17:23:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:05,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:05,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:05,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240647368] [2022-07-21 17:23:05,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240647368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:05,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:05,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 17:23:05,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963854051] [2022-07-21 17:23:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 17:23:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 17:23:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 17:23:05,682 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:05,886 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-07-21 17:23:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:23:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 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 16 [2022-07-21 17:23:05,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:05,887 INFO L225 Difference]: With dead ends: 72 [2022-07-21 17:23:05,887 INFO L226 Difference]: Without dead ends: 72 [2022-07-21 17:23:05,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:23:05,888 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 33 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:05,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 169 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 17:23:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-21 17:23:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2022-07-21 17:23:05,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:23:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-07-21 17:23:05,892 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 16 [2022-07-21 17:23:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:05,892 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-07-21 17:23:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-07-21 17:23:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 17:23:05,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:05,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:05,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 17:23:06,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:06,105 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1601493655, now seen corresponding path program 1 times [2022-07-21 17:23:06,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:06,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386563938] [2022-07-21 17:23:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:06,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:06,107 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:06,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 17:23:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:06,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 17:23:06,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:06,174 INFO L390 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 [2022-07-21 17:23:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:06,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:06,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:06,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386563938] [2022-07-21 17:23:06,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386563938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:06,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:06,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 17:23:06,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233573402] [2022-07-21 17:23:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:06,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 17:23:06,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 17:23:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 17:23:06,292 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:06,597 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2022-07-21 17:23:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 17:23:06,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 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 16 [2022-07-21 17:23:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:06,598 INFO L225 Difference]: With dead ends: 70 [2022-07-21 17:23:06,598 INFO L226 Difference]: Without dead ends: 70 [2022-07-21 17:23:06,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:23:06,598 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:06,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 213 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:23:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-21 17:23:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-07-21 17:23:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 51 states have internal predecessors, (53), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-21 17:23:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2022-07-21 17:23:06,603 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 16 [2022-07-21 17:23:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:06,603 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2022-07-21 17:23:06,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2022-07-21 17:23:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 17:23:06,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:06,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:06,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-21 17:23:06,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:06,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:06,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1472410937, now seen corresponding path program 1 times [2022-07-21 17:23:06,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:06,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354775173] [2022-07-21 17:23:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:06,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:06,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:06,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:06,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 17:23:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:06,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 17:23:06,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:06,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:06,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:06,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354775173] [2022-07-21 17:23:06,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354775173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:06,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:06,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:23:06,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492779955] [2022-07-21 17:23:06,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:23:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:23:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:23:06,903 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-21 17:23:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:06,916 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2022-07-21 17:23:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:23:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 16 [2022-07-21 17:23:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:06,917 INFO L225 Difference]: With dead ends: 51 [2022-07-21 17:23:06,917 INFO L226 Difference]: Without dead ends: 51 [2022-07-21 17:23:06,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:23:06,918 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 4 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:06,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 148 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:23:06,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-21 17:23:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-07-21 17:23:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.15625) internal successors, (37), 37 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-21 17:23:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2022-07-21 17:23:06,922 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 16 [2022-07-21 17:23:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:06,923 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2022-07-21 17:23:06,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-07-21 17:23:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2022-07-21 17:23:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 17:23:06,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:06,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:06,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:07,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:07,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1437110869, now seen corresponding path program 1 times [2022-07-21 17:23:07,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:07,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843985651] [2022-07-21 17:23:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:07,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:07,132 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:07,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 17:23:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:07,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:23:07,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:07,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:07,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:07,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843985651] [2022-07-21 17:23:07,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843985651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:07,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:07,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:23:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182184711] [2022-07-21 17:23:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:23:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:23:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:23:07,225 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-07-21 17:23:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:07,297 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2022-07-21 17:23:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:23:07,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 18 [2022-07-21 17:23:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:07,299 INFO L225 Difference]: With dead ends: 47 [2022-07-21 17:23:07,301 INFO L226 Difference]: Without dead ends: 47 [2022-07-21 17:23:07,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:23:07,302 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:07,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 88 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:23:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-21 17:23:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-07-21 17:23:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-21 17:23:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-07-21 17:23:07,309 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 18 [2022-07-21 17:23:07,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:07,310 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-07-21 17:23:07,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-07-21 17:23:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-07-21 17:23:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 17:23:07,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:07,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:07,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:07,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:07,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1437110868, now seen corresponding path program 1 times [2022-07-21 17:23:07,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:07,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310650180] [2022-07-21 17:23:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:07,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:07,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:07,513 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:07,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 17:23:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:07,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 17:23:07,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:07,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:07,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:07,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310650180] [2022-07-21 17:23:07,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310650180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:07,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:07,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:23:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212927802] [2022-07-21 17:23:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:07,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:23:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:23:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:23:07,668 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:07,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:07,823 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2022-07-21 17:23:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:23:07,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 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 18 [2022-07-21 17:23:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:07,824 INFO L225 Difference]: With dead ends: 46 [2022-07-21 17:23:07,824 INFO L226 Difference]: Without dead ends: 46 [2022-07-21 17:23:07,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:23:07,825 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:07,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 130 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:23:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-21 17:23:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-21 17:23:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-21 17:23:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-07-21 17:23:07,828 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 18 [2022-07-21 17:23:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:07,828 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-07-21 17:23:07,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:23:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-07-21 17:23:07,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 17:23:07,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:07,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:07,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:08,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -245688502, now seen corresponding path program 1 times [2022-07-21 17:23:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527329480] [2022-07-21 17:23:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:08,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:08,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:08,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 17:23:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:08,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:23:08,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:08,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:08,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:08,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527329480] [2022-07-21 17:23:08,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527329480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:08,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:08,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 17:23:08,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294300606] [2022-07-21 17:23:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:08,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 17:23:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 17:23:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:23:08,105 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:23:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:08,172 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2022-07-21 17:23:08,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 17:23:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-21 17:23:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:08,173 INFO L225 Difference]: With dead ends: 48 [2022-07-21 17:23:08,173 INFO L226 Difference]: Without dead ends: 35 [2022-07-21 17:23:08,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 17:23:08,175 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:08,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:23:08,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-21 17:23:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-21 17:23:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 17:23:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2022-07-21 17:23:08,178 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 18 [2022-07-21 17:23:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:08,178 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2022-07-21 17:23:08,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:23:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2022-07-21 17:23:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 17:23:08,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:08,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:08,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:08,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:08,388 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1690332874, now seen corresponding path program 1 times [2022-07-21 17:23:08,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:08,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035861603] [2022-07-21 17:23:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:08,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:08,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:08,390 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:08,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 17:23:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:08,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 17:23:08,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:08,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:08,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035861603] [2022-07-21 17:23:08,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035861603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:08,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:08,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 17:23:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666964237] [2022-07-21 17:23:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:08,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 17:23:08,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 17:23:08,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 17:23:08,602 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:23:08,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:08,800 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2022-07-21 17:23:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 17:23:08,800 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-21 17:23:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:08,801 INFO L225 Difference]: With dead ends: 34 [2022-07-21 17:23:08,801 INFO L226 Difference]: Without dead ends: 34 [2022-07-21 17:23:08,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 17:23:08,801 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:08,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 85 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:23:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-21 17:23:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-21 17:23:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 17:23:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2022-07-21 17:23:08,803 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 27 [2022-07-21 17:23:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:08,804 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2022-07-21 17:23:08,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:23:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2022-07-21 17:23:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 17:23:08,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:08,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:08,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:09,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:09,014 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash -860711565, now seen corresponding path program 1 times [2022-07-21 17:23:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:09,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576577955] [2022-07-21 17:23:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:09,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:09,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:09,016 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:09,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 17:23:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:23:09,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 17:23:09,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:23:09,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 17:23:09,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 17:23:09,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-07-21 17:23:09,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-21 17:23:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:23:09,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:23:09,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:23:09,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576577955] [2022-07-21 17:23:09,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576577955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:23:09,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:23:09,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 17:23:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291980278] [2022-07-21 17:23:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:23:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 17:23:09,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:23:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 17:23:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 17:23:09,366 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:23:09,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:23:09,918 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2022-07-21 17:23:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 17:23:09,919 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-07-21 17:23:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:23:09,919 INFO L225 Difference]: With dead ends: 33 [2022-07-21 17:23:09,919 INFO L226 Difference]: Without dead ends: 33 [2022-07-21 17:23:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-07-21 17:23:09,920 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 17:23:09,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 107 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 17:23:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-21 17:23:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-21 17:23:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 17:23:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2022-07-21 17:23:09,921 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 28 [2022-07-21 17:23:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:23:09,922 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2022-07-21 17:23:09,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 17:23:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2022-07-21 17:23:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 17:23:09,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:23:09,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:09,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:10,123 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 12 more)] === [2022-07-21 17:23:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:23:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1571524617, now seen corresponding path program 1 times [2022-07-21 17:23:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:23:10,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965895041] [2022-07-21 17:23:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:23:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:23:10,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:23:10,125 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:23:10,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 17:23:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 17:23:10,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 17:23:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 17:23:10,324 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 17:23:10,324 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 17:23:10,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2022-07-21 17:23:10,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2022-07-21 17:23:10,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2022-07-21 17:23:10,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2022-07-21 17:23:10,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2022-07-21 17:23:10,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 17:23:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:23:10,529 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:23:10,532 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:23:10,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:23:10 BoogieIcfgContainer [2022-07-21 17:23:10,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:23:10,562 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:23:10,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:23:10,564 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:23:10,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:22:46" (3/4) ... [2022-07-21 17:23:10,566 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 17:23:10,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:23:10,566 INFO L158 Benchmark]: Toolchain (without parser) took 24970.24ms. Allocated memory was 52.4MB in the beginning and 79.7MB in the end (delta: 27.3MB). Free memory was 28.4MB in the beginning and 47.6MB in the end (delta: -19.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-21 17:23:10,567 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 33.6MB in the beginning and 33.6MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:23:10,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.80ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.1MB in the beginning and 45.0MB in the end (delta: -16.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-07-21 17:23:10,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.66ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 42.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 17:23:10,567 INFO L158 Benchmark]: Boogie Preprocessor took 14.84ms. Allocated memory is still 65.0MB. Free memory was 42.8MB in the beginning and 41.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 17:23:10,567 INFO L158 Benchmark]: RCFGBuilder took 435.14ms. Allocated memory is still 65.0MB. Free memory was 41.3MB in the beginning and 46.4MB in the end (delta: -5.1MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-07-21 17:23:10,568 INFO L158 Benchmark]: TraceAbstraction took 23939.67ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.8MB in the beginning and 48.3MB in the end (delta: -2.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-07-21 17:23:10,568 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 79.7MB. Free memory was 48.3MB in the beginning and 47.6MB in the end (delta: 718.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:23:10,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory was 33.6MB in the beginning and 33.6MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.80ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 28.1MB in the beginning and 45.0MB in the end (delta: -16.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.66ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 42.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.84ms. Allocated memory is still 65.0MB. Free memory was 42.8MB in the beginning and 41.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 435.14ms. Allocated memory is still 65.0MB. Free memory was 41.3MB in the beginning and 46.4MB in the end (delta: -5.1MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 23939.67ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.8MB in the beginning and 48.3MB in the end (delta: -2.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 79.7MB. Free memory was 48.3MB in the beginning and 47.6MB in the end (delta: 718.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L773] CALL entry_point() [L769] CALL alloc_13() [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A13))={6:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={2:0}, head={2:0}, ldv_global_msg_list={1:0}, new={6:4}] [L559] EXPR head->next VAL [global_list_13={2:0}, head={2:0}, head={2:0}, head->next={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, next={2:0}, prev={2:0}] [L547] next->prev = new VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L548] new->next = next VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L549] new->prev = prev VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L550] prev->next = new VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [global_list_13={2:0}, head={2:0}, head={2:0}, head->next={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L769] RET alloc_13() [L770] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}] [L540] list->next = list VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}, list={2:0}] [L541] list->prev = list VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}, list={2:0}] [L770] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L773] RET entry_point() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: 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 5 procedures, 49 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 23.9s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 669 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 646 mSDsluCounter, 1824 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 94 IncrementalHoareTripleChecker+Unchecked, 1343 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1581 IncrementalHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 481 mSDtfsCounter, 1581 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 295 GetRequests, 150 SyntacticMatches, 4 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 70 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 235 ConstructedInterpolants, 6 QuantifiedInterpolants, 1872 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1379 ConjunctsInSsa, 169 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 could not prove your program: unable to determine feasibility of some traces [2022-07-21 17:23:10,604 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample