./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 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_test14_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 a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 05:55:35,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 05:55:35,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 05:55:35,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 05:55:35,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 05:55:35,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 05:55:35,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 05:55:35,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 05:55:35,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 05:55:35,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 05:55:35,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 05:55:35,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 05:55:35,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 05:55:35,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 05:55:35,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 05:55:35,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 05:55:35,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 05:55:35,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 05:55:35,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 05:55:35,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 05:55:35,520 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 05:55:35,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 05:55:35,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 05:55:35,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 05:55:35,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 05:55:35,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 05:55:35,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 05:55:35,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 05:55:35,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 05:55:35,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 05:55:35,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 05:55:35,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 05:55:35,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 05:55:35,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 05:55:35,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 05:55:35,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 05:55:35,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 05:55:35,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 05:55:35,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 05:55:35,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 05:55:35,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 05:55:35,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 05:55:35,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 05:55:35,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 05:55:35,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 05:55:35,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 05:55:35,564 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 05:55:35,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 05:55:35,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 05:55:35,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 05:55:35,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 05:55:35,566 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 05:55:35,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 05:55:35,566 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 05:55:35,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 05:55:35,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 05:55:35,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 05:55:35,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 05:55:35,567 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 05:55:35,567 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 05:55:35,568 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 05:55:35,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 05:55:35,568 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 05:55:35,568 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 05:55:35,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 05:55:35,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 05:55:35,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 05:55:35,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 05:55:35,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:55:35,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 05:55:35,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 05:55:35,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 05:55:35,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 05:55:35,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 [2022-07-20 05:55:35,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 05:55:35,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 05:55:35,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 05:55:35,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 05:55:35,830 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 05:55:35,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2022-07-20 05:55:35,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7be8b39/f16a35cae19d4b46a392a7b8de604192/FLAGf835ea608 [2022-07-20 05:55:36,398 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 05:55:36,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2022-07-20 05:55:36,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7be8b39/f16a35cae19d4b46a392a7b8de604192/FLAGf835ea608 [2022-07-20 05:55:36,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7be8b39/f16a35cae19d4b46a392a7b8de604192 [2022-07-20 05:55:36,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 05:55:36,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 05:55:36,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 05:55:36,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 05:55:36,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 05:55:36,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:55:36" (1/1) ... [2022-07-20 05:55:36,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da64f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:36, skipping insertion in model container [2022-07-20 05:55:36,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:55:36" (1/1) ... [2022-07-20 05:55:36,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 05:55:36,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:55:37,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:55:37,146 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) [2022-07-20 05:55:37,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fe7a513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:37, skipping insertion in model container [2022-07-20 05:55:37,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 05:55:37,147 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-20 05:55:37,149 INFO L158 Benchmark]: Toolchain (without parser) took 431.97ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 58.3MB in the beginning and 84.5MB in the end (delta: -26.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 05:55:37,149 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:55:37,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.10ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 58.1MB in the beginning and 84.5MB in the end (delta: -26.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 05:55:37,152 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.10ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 58.1MB in the beginning and 84.5MB in the end (delta: -26.3MB). Peak memory consumption was 6.3MB. 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_test14_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 a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 05:55:38,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 05:55:38,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 05:55:38,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 05:55:38,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 05:55:38,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 05:55:38,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 05:55:38,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 05:55:38,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 05:55:38,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 05:55:38,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 05:55:38,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 05:55:38,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 05:55:38,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 05:55:38,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 05:55:38,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 05:55:38,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 05:55:38,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 05:55:38,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 05:55:38,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 05:55:38,952 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 05:55:38,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 05:55:38,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 05:55:38,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 05:55:38,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 05:55:38,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 05:55:38,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 05:55:38,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 05:55:38,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 05:55:38,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 05:55:38,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 05:55:38,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 05:55:38,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 05:55:38,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 05:55:38,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 05:55:38,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 05:55:38,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 05:55:38,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 05:55:38,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 05:55:38,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 05:55:38,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 05:55:38,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 05:55:38,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 05:55:39,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 05:55:39,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 05:55:39,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 05:55:39,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 05:55:39,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 05:55:39,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 05:55:39,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 05:55:39,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 05:55:39,024 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 05:55:39,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 05:55:39,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 05:55:39,025 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 05:55:39,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 05:55:39,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 05:55:39,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 05:55:39,026 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 05:55:39,026 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 05:55:39,026 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 05:55:39,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 05:55:39,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 05:55:39,027 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 05:55:39,027 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 05:55:39,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 05:55:39,028 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 05:55:39,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 05:55:39,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 05:55:39,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 05:55:39,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:55:39,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 05:55:39,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 05:55:39,030 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 05:55:39,030 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 05:55:39,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 05:55:39,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a70da9b875e65dfce1d24d9896f28c8f06f4c5903acb198968ef49c3c899dd06 [2022-07-20 05:55:39,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 05:55:39,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 05:55:39,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 05:55:39,361 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 05:55:39,362 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 05:55:39,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2022-07-20 05:55:39,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e92d796/de496089f8c04e88b503e1b233efd14d/FLAGcfdb5a28e [2022-07-20 05:55:39,894 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 05:55:39,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test14_1.i [2022-07-20 05:55:39,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e92d796/de496089f8c04e88b503e1b233efd14d/FLAGcfdb5a28e [2022-07-20 05:55:40,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26e92d796/de496089f8c04e88b503e1b233efd14d [2022-07-20 05:55:40,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 05:55:40,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 05:55:40,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 05:55:40,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 05:55:40,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 05:55:40,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a250ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40, skipping insertion in model container [2022-07-20 05:55:40,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 05:55:40,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:55:40,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:55:40,652 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 05:55:40,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 05:55:40,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:55:40,732 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 05:55:40,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 05:55:40,837 INFO L208 MainTranslator]: Completed translation [2022-07-20 05:55:40,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40 WrapperNode [2022-07-20 05:55:40,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 05:55:40,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 05:55:40,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 05:55:40,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 05:55:40,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,878 INFO L137 Inliner]: procedures = 167, calls = 74, calls flagged for inlining = 21, calls inlined = 4, statements flattened = 23 [2022-07-20 05:55:40,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 05:55:40,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 05:55:40,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 05:55:40,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 05:55:40,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 05:55:40,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 05:55:40,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 05:55:40,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 05:55:40,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (1/1) ... [2022-07-20 05:55:40,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 05:55:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 05:55:40,941 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) [2022-07-20 05:55:40,967 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 [2022-07-20 05:55:40,983 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-20 05:55:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-20 05:55:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 05:55:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 05:55:40,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-07-20 05:55:40,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-07-20 05:55:40,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 05:55:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 05:55:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 05:55:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 05:55:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 05:55:40,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 05:55:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 05:55:40,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 05:55:40,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 05:55:41,091 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 05:55:41,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 05:55:41,319 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 05:55:41,324 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 05:55:41,324 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 05:55:41,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:55:41 BoogieIcfgContainer [2022-07-20 05:55:41,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 05:55:41,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 05:55:41,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 05:55:41,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 05:55:41,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:55:40" (1/3) ... [2022-07-20 05:55:41,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e56de9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:55:41, skipping insertion in model container [2022-07-20 05:55:41,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:55:40" (2/3) ... [2022-07-20 05:55:41,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e56de9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:55:41, skipping insertion in model container [2022-07-20 05:55:41,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:55:41" (3/3) ... [2022-07-20 05:55:41,335 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test14_1.i [2022-07-20 05:55:41,347 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 05:55:41,349 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-20 05:55:41,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 05:55:41,407 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@6eafe9a2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b5457 [2022-07-20 05:55:41,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-07-20 05:55:41,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.619047619047619) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 05:55:41,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:41,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:41,418 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 8 more)] === [2022-07-20 05:55:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash -977238692, now seen corresponding path program 1 times [2022-07-20 05:55:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:41,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212882054] [2022-07-20 05:55:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:41,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:41,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:41,439 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) [2022-07-20 05:55:41,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 05:55:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:41,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 05:55:41,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:41,614 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 [2022-07-20 05:55:41,701 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-20 05:55:41,701 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 [2022-07-20 05:55:41,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:41,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:41,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:41,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212882054] [2022-07-20 05:55:41,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212882054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:41,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:41,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 05:55:41,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219957709] [2022-07-20 05:55:41,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:41,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 05:55:41,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 05:55:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-20 05:55:41,765 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.619047619047619) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-07-20 05:55:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:41,963 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-07-20 05:55:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 05:55:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 [2022-07-20 05:55:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:41,973 INFO L225 Difference]: With dead ends: 40 [2022-07-20 05:55:41,973 INFO L226 Difference]: Without dead ends: 38 [2022-07-20 05:55:41,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:55:41,977 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:41,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 62 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-07-20 05:55:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-20 05:55:42,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-07-20 05:55:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.55) internal successors, (31), 30 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-07-20 05:55:42,007 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 12 [2022-07-20 05:55:42,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:42,007 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-07-20 05:55:42,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-07-20 05:55:42,008 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-07-20 05:55:42,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 05:55:42,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:42,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:42,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:42,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:42,219 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 8 more)] === [2022-07-20 05:55:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash -977238691, now seen corresponding path program 1 times [2022-07-20 05:55:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:42,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387518786] [2022-07-20 05:55:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:42,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:42,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:42,222 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) [2022-07-20 05:55:42,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 05:55:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:42,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-20 05:55:42,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:42,306 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 [2022-07-20 05:55:42,312 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 [2022-07-20 05:55:42,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 05:55:42,442 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 [2022-07-20 05:55:42,454 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-20 05:55:42,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-20 05:55:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:42,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:42,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:42,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387518786] [2022-07-20 05:55:42,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387518786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:42,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:42,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 05:55:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128568184] [2022-07-20 05:55:42,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:42,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 05:55:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:42,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 05:55:42,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-20 05:55:42,570 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2022-07-20 05:55:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:44,844 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-07-20 05:55:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 05:55:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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 [2022-07-20 05:55:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:44,846 INFO L225 Difference]: With dead ends: 41 [2022-07-20 05:55:44,846 INFO L226 Difference]: Without dead ends: 41 [2022-07-20 05:55:44,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2022-07-20 05:55:44,848 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:44,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 81 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-07-20 05:55:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-20 05:55:44,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2022-07-20 05:55:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.5) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2022-07-20 05:55:44,856 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 12 [2022-07-20 05:55:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:44,856 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2022-07-20 05:55:44,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2022-07-20 05:55:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2022-07-20 05:55:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 05:55:44,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:44,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:44,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:45,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:45,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash -977172480, now seen corresponding path program 1 times [2022-07-20 05:55:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:45,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280539129] [2022-07-20 05:55:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:45,061 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) [2022-07-20 05:55:45,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 05:55:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:45,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 05:55:45,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:45,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:45,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:45,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:45,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280539129] [2022-07-20 05:55:45,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280539129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:45,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:45,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 05:55:45,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680290134] [2022-07-20 05:55:45,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:45,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 05:55:45,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 05:55:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:45,156 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:55:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:45,180 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2022-07-20 05:55:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 05:55:45,181 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-20 05:55:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:45,182 INFO L225 Difference]: With dead ends: 44 [2022-07-20 05:55:45,182 INFO L226 Difference]: Without dead ends: 44 [2022-07-20 05:55:45,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:45,183 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 139 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 [2022-07-20 05:55:45,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 139 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:55:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-20 05:55:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2022-07-20 05:55:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 23 states have (on average 1.434782608695652) internal successors, (33), 32 states have internal predecessors, (33), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-20 05:55:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2022-07-20 05:55:45,189 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 12 [2022-07-20 05:55:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:45,190 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2022-07-20 05:55:45,190 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:55:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2022-07-20 05:55:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-20 05:55:45,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:45,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:45,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:45,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:45,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 765637855, now seen corresponding path program 1 times [2022-07-20 05:55:45,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:45,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491400745] [2022-07-20 05:55:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:45,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:45,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:45,403 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) [2022-07-20 05:55:45,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 05:55:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:45,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 05:55:45,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:45,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:45,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:45,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491400745] [2022-07-20 05:55:45,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491400745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:45,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:45,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 05:55:45,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689907264] [2022-07-20 05:55:45,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:45,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 05:55:45,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:45,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 05:55:45,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:45,569 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:55:45,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:45,630 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2022-07-20 05:55:45,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 05:55:45,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-20 05:55:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:45,633 INFO L225 Difference]: With dead ends: 43 [2022-07-20 05:55:45,633 INFO L226 Difference]: Without dead ends: 40 [2022-07-20 05:55:45,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:45,636 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:45,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 55 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2022-07-20 05:55:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-20 05:55:45,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2022-07-20 05:55:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.45) internal successors, (29), 28 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-07-20 05:55:45,650 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2022-07-20 05:55:45,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:45,650 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-07-20 05:55:45,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 05:55:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-07-20 05:55:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 05:55:45,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:45,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:45,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:45,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:45,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:45,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1629525643, now seen corresponding path program 1 times [2022-07-20 05:55:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:45,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115704966] [2022-07-20 05:55:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:45,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:45,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:45,859 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) [2022-07-20 05:55:45,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 05:55:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:45,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-20 05:55:45,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:46,003 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 [2022-07-20 05:55:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:46,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:46,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:46,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115704966] [2022-07-20 05:55:46,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115704966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:46,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:46,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 05:55:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782399874] [2022-07-20 05:55:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:46,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 05:55:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 05:55:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:55:46,044 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-07-20 05:55:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:46,178 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-07-20 05:55:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 05:55:46,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 [2022-07-20 05:55:46,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:46,180 INFO L225 Difference]: With dead ends: 34 [2022-07-20 05:55:46,180 INFO L226 Difference]: Without dead ends: 34 [2022-07-20 05:55:46,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-20 05:55:46,181 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:46,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 89 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-07-20 05:55:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-20 05:55:46,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-20 05:55:46,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.4) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2022-07-20 05:55:46,184 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 15 [2022-07-20 05:55:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:46,185 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2022-07-20 05:55:46,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-07-20 05:55:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2022-07-20 05:55:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 05:55:46,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:46,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:46,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:46,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:46,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1629525642, now seen corresponding path program 1 times [2022-07-20 05:55:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:46,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939768760] [2022-07-20 05:55:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:46,388 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) [2022-07-20 05:55:46,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 05:55:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:46,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-20 05:55:46,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:46,467 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 [2022-07-20 05:55:46,479 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 [2022-07-20 05:55:46,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-07-20 05:55:46,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-07-20 05:55:48,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 05:55:48,642 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 [2022-07-20 05:55:48,652 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-20 05:55:48,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-20 05:55:48,801 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 [2022-07-20 05:55:48,806 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 [2022-07-20 05:55:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:48,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:48,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:48,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939768760] [2022-07-20 05:55:48,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939768760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:48,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:48,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-20 05:55:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512534579] [2022-07-20 05:55:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 05:55:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 05:55:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2022-07-20 05:55:48,891 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2022-07-20 05:55:49,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:49,268 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2022-07-20 05:55:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 05:55:49,270 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 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 [2022-07-20 05:55:49,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:49,270 INFO L225 Difference]: With dead ends: 56 [2022-07-20 05:55:49,270 INFO L226 Difference]: Without dead ends: 56 [2022-07-20 05:55:49,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-07-20 05:55:49,271 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:49,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 148 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2022-07-20 05:55:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-20 05:55:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2022-07-20 05:55:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 39 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-20 05:55:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-07-20 05:55:49,276 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 15 [2022-07-20 05:55:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:49,276 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-07-20 05:55:49,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2022-07-20 05:55:49,276 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-07-20 05:55:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-20 05:55:49,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:49,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:49,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:49,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:49,478 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 8 more)] === [2022-07-20 05:55:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 868490295, now seen corresponding path program 1 times [2022-07-20 05:55:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956437343] [2022-07-20 05:55:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:49,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:49,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:49,481 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) [2022-07-20 05:55:49,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 05:55:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:49,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 05:55:49,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:49,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:49,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:49,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956437343] [2022-07-20 05:55:49,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956437343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:49,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:49,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 05:55:49,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487414756] [2022-07-20 05:55:49,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:49,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 05:55:49,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:49,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 05:55:49,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:49,592 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-20 05:55:49,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:49,611 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2022-07-20 05:55:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 05:55:49,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2022-07-20 05:55:49,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:49,616 INFO L225 Difference]: With dead ends: 37 [2022-07-20 05:55:49,616 INFO L226 Difference]: Without dead ends: 33 [2022-07-20 05:55:49,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:49,617 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:49,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 05:55:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-20 05:55:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-20 05:55:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.3) internal successors, (26), 26 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2022-07-20 05:55:49,621 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 15 [2022-07-20 05:55:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:49,621 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2022-07-20 05:55:49,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-07-20 05:55:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2022-07-20 05:55:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 05:55:49,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:49,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:49,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:49,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:49,832 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 8 more)] === [2022-07-20 05:55:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1024312625, now seen corresponding path program 1 times [2022-07-20 05:55:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:49,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409487640] [2022-07-20 05:55:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:49,835 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) [2022-07-20 05:55:49,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 05:55:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:49,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 05:55:49,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:49,904 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 [2022-07-20 05:55:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:49,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:49,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:49,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409487640] [2022-07-20 05:55:49,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409487640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:49,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:49,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-20 05:55:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987380902] [2022-07-20 05:55:49,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:49,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 05:55:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 05:55:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-20 05:55:49,970 INFO L87 Difference]: Start difference. First operand 33 states and 32 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) [2022-07-20 05:55:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:50,150 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2022-07-20 05:55:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 05:55:50,151 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 [2022-07-20 05:55:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:50,151 INFO L225 Difference]: With dead ends: 31 [2022-07-20 05:55:50,151 INFO L226 Difference]: Without dead ends: 31 [2022-07-20 05:55:50,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-20 05:55:50,152 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:50,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 62 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 05:55:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-20 05:55:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-20 05:55:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.2) internal successors, (24), 24 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2022-07-20 05:55:50,155 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 16 [2022-07-20 05:55:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:50,155 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2022-07-20 05:55:50,155 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) [2022-07-20 05:55:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2022-07-20 05:55:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 05:55:50,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:50,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:50,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:50,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:50,364 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 8 more)] === [2022-07-20 05:55:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1024312626, now seen corresponding path program 1 times [2022-07-20 05:55:50,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:50,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611999225] [2022-07-20 05:55:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:50,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:50,366 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) [2022-07-20 05:55:50,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 05:55:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:50,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-20 05:55:50,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:50,452 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 [2022-07-20 05:55:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:50,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:50,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:50,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611999225] [2022-07-20 05:55:50,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611999225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:50,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:50,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-20 05:55:50,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053484660] [2022-07-20 05:55:50,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:50,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-20 05:55:50,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:50,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-20 05:55:50,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-20 05:55:50,598 INFO L87 Difference]: Start difference. First operand 31 states and 30 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) [2022-07-20 05:55:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:50,789 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2022-07-20 05:55:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 05:55:50,790 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 [2022-07-20 05:55:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:50,791 INFO L225 Difference]: With dead ends: 29 [2022-07-20 05:55:50,791 INFO L226 Difference]: Without dead ends: 29 [2022-07-20 05:55:50,791 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 [2022-07-20 05:55:50,791 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:50,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 79 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:55:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-20 05:55:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-20 05:55:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2022-07-20 05:55:50,794 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 16 [2022-07-20 05:55:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:50,794 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2022-07-20 05:55:50,794 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) [2022-07-20 05:55:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2022-07-20 05:55:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 05:55:50,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:50,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:50,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:51,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:51,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:51,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash 816922132, now seen corresponding path program 1 times [2022-07-20 05:55:51,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:51,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554645866] [2022-07-20 05:55:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:51,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:51,012 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) [2022-07-20 05:55:51,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 05:55:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:51,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 05:55:51,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:51,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:51,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554645866] [2022-07-20 05:55:51,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554645866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:51,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:51,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 05:55:51,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306266338] [2022-07-20 05:55:51,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:51,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 05:55:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 05:55:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 05:55:51,126 INFO L87 Difference]: Start difference. First operand 29 states and 28 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) [2022-07-20 05:55:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:51,185 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2022-07-20 05:55:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 05:55:51,186 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 [2022-07-20 05:55:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:51,186 INFO L225 Difference]: With dead ends: 28 [2022-07-20 05:55:51,186 INFO L226 Difference]: Without dead ends: 28 [2022-07-20 05:55:51,187 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 [2022-07-20 05:55:51,188 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:51,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:55:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-20 05:55:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-20 05:55:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2022-07-20 05:55:51,193 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 18 [2022-07-20 05:55:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:51,194 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2022-07-20 05:55:51,194 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) [2022-07-20 05:55:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2022-07-20 05:55:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-20 05:55:51,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:51,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:51,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:51,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:51,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash 816922133, now seen corresponding path program 1 times [2022-07-20 05:55:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:51,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145436204] [2022-07-20 05:55:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:51,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:51,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:51,406 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) [2022-07-20 05:55:51,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 05:55:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 05:55:51,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-20 05:55:51,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 05:55:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 05:55:51,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 05:55:51,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 05:55:51,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145436204] [2022-07-20 05:55:51,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145436204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 05:55:51,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 05:55:51,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-20 05:55:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108883846] [2022-07-20 05:55:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 05:55:51,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-20 05:55:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 05:55:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-20 05:55:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-20 05:55:51,587 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-07-20 05:55:51,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 05:55:51,722 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2022-07-20 05:55:51,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 05:55:51,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 [2022-07-20 05:55:51,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 05:55:51,723 INFO L225 Difference]: With dead ends: 27 [2022-07-20 05:55:51,723 INFO L226 Difference]: Without dead ends: 27 [2022-07-20 05:55:51,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-20 05:55:51,724 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 05:55:51,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 83 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 05:55:51,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-20 05:55:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-20 05:55:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.0) internal successors, (20), 20 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 05:55:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2022-07-20 05:55:51,727 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 18 [2022-07-20 05:55:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 05:55:51,727 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2022-07-20 05:55:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-07-20 05:55:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2022-07-20 05:55:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-20 05:55:51,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 05:55:51,728 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] [2022-07-20 05:55:51,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 05:55:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:51,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 8 more)] === [2022-07-20 05:55:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 05:55:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2055891074, now seen corresponding path program 1 times [2022-07-20 05:55:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 05:55:51,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730364610] [2022-07-20 05:55:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 05:55:51,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 05:55:51,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 05:55:51,934 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) [2022-07-20 05:55:51,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 05:55:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 05:55:52,029 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 05:55:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 05:55:52,113 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-20 05:55:52,113 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 05:55:52,114 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2022-07-20 05:55:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-07-20 05:55:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-07-20 05:55:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-07-20 05:55:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-07-20 05:55:52,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-07-20 05:55:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 11 remaining) [2022-07-20 05:55:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 11 remaining) [2022-07-20 05:55:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 11 remaining) [2022-07-20 05:55:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 11 remaining) [2022-07-20 05:55:52,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 11 remaining) [2022-07-20 05:55:52,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-20 05:55:52,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 05:55:52,320 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 05:55:52,322 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 05:55:52,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:55:52 BoogieIcfgContainer [2022-07-20 05:55:52,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 05:55:52,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 05:55:52,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 05:55:52,350 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 05:55:52,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:55:41" (3/4) ... [2022-07-20 05:55:52,354 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-20 05:55:52,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 05:55:52,355 INFO L158 Benchmark]: Toolchain (without parser) took 12112.12ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 33.6MB in the beginning and 36.2MB in the end (delta: -2.5MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2022-07-20 05:55:52,355 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 37.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:55:52,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.75ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.5MB in the beginning and 52.3MB in the end (delta: -18.8MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-07-20 05:55:52,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.42ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 50.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 05:55:52,356 INFO L158 Benchmark]: Boogie Preprocessor took 20.75ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 48.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 05:55:52,356 INFO L158 Benchmark]: RCFGBuilder took 424.03ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 54.2MB in the end (delta: -5.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-20 05:55:52,357 INFO L158 Benchmark]: TraceAbstraction took 11022.02ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 53.8MB in the beginning and 36.2MB in the end (delta: 17.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-07-20 05:55:52,357 INFO L158 Benchmark]: Witness Printer took 4.83ms. Allocated memory is still 88.1MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 05:55:52,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory was 37.8MB in the beginning and 37.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.75ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.5MB in the beginning and 52.3MB in the end (delta: -18.8MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.42ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 50.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.75ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 48.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.03ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 54.2MB in the end (delta: -5.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11022.02ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 53.8MB in the beginning and 36.2MB in the end (delta: 17.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Witness Printer took 4.83ms. Allocated memory is still 88.1MB. Free memory is still 36.2MB. 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: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 771. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L772] CALL entry_point() [L768] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; [L769] CALL alloc_14(&list_14) [L762] CALL, EXPR ldv_malloc(sizeof(struct A14)) VAL [\old(size)=12, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] RET, EXPR ldv_malloc(sizeof(struct A14)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A14))={2:0}, list={-2147483647:0}, list={-2147483647:0}] [L762] struct A14 *p = (struct A14 *)ldv_malloc(sizeof(struct A14)); [L763] COND TRUE \read(*p) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, list={-2147483647:0}, p={2:0}] [L764] CALL ldv_list_add(&p->list, list) VAL [head={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}] [L559] EXPR head->next VAL [head={-2147483647:0}, head={-2147483647:0}, head->next={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, new={2:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [ldv_global_msg_list={1:0}, new={2:4}, next={-2147483647:0}, prev={-2147483647:0}] [L547] next->prev = new VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L548] new->next = next VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L549] new->prev = prev VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L550] prev->next = new VAL [ldv_global_msg_list={1:0}, new={2:4}, new={2:4}, next={-2147483647:0}, next={-2147483647:0}, prev={-2147483647:0}, prev={-2147483647:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [head={-2147483647:0}, head={-2147483647:0}, head->next={-2147483647:0}, ldv_global_msg_list={1:0}, new={2:4}, new={2:4}] [L764] RET ldv_list_add(&p->list, list) VAL [ldv_global_msg_list={1:0}, list={-2147483647:0}, list={-2147483647:0}, p={2:0}] [L769] RET alloc_14(&list_14) [L768] struct ldv_list_head list_14 = { &(list_14), &(list_14) }; VAL [ldv_global_msg_list={1:0}] [L772] 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 242 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 978 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 224 IncrementalHoareTripleChecker+Unchecked, 719 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 854 IncrementalHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 259 mSDtfsCounter, 854 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 170 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=6, InterpolantAutomatonStates: 84, 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, 11 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 18 QuantifiedInterpolants, 966 SizeOfPredicates, 50 NumberOfNonLiveVariables, 988 ConjunctsInSsa, 140 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 [2022-07-20 05:55:52,390 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