./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/simple-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/simple-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:56,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:56,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:56,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:56,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:56,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:56,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:56,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:56,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:56,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:56,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:56,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:56,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:56,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:56,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:56,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:56,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:56,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:56,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:56,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:56,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:56,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:56,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:56,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:56,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:56,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:56,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:56,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:56,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:56,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:56,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:56,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:56,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:56,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:56,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:56,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:56,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:56,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:56,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:56,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:56,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:56,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:28:56,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:56,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:56,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:56,609 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:56,610 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:56,610 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:56,610 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:56,610 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:56,610 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:56,611 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:56,611 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:56,611 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:56,611 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:56,612 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:56,612 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:56,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:28:56,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:28:56,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:56,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:56,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:28:56,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:56,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:56,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:56,614 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:28:56,615 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:28:56,615 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:28:56,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:56,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:56,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:56,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:56,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:56,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:56,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:56,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:56,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:56,617 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:56,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:56,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:56,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:56,618 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2021-10-11 02:28:56,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:56,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:56,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:56,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:56,895 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:56,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/list-properties/simple-2.i [2021-10-11 02:28:56,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/a3dd2b9f8/8dfcccd0715345cca5ec8ba14da117dd/FLAG0e4c42fd8 [2021-10-11 02:28:57,449 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:57,449 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/sv-benchmarks/c/list-properties/simple-2.i [2021-10-11 02:28:57,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/a3dd2b9f8/8dfcccd0715345cca5ec8ba14da117dd/FLAG0e4c42fd8 [2021-10-11 02:28:57,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/a3dd2b9f8/8dfcccd0715345cca5ec8ba14da117dd [2021-10-11 02:28:57,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:57,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:57,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:57,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:57,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:57,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6f9104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57, skipping insertion in model container [2021-10-11 02:28:57,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:57,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:58,119 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2021-10-11 02:28:58,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:58,133 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:58,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2021-10-11 02:28:58,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:58,246 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:58,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58 WrapperNode [2021-10-11 02:28:58,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:58,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:58,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:58,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:58,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:58,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:58,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:58,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:58,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... [2021-10-11 02:28:58,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:58,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:58,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:58,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:58,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:28:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:28:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:28:58,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:28:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:28:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:58,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:58,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:58,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:58,849 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:28:58,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:58 BoogieIcfgContainer [2021-10-11 02:28:58,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:58,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:58,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:58,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:58,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:57" (1/3) ... [2021-10-11 02:28:58,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2bda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:58, skipping insertion in model container [2021-10-11 02:28:58,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:58" (2/3) ... [2021-10-11 02:28:58,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2bda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:58, skipping insertion in model container [2021-10-11 02:28:58,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:58" (3/3) ... [2021-10-11 02:28:58,860 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2021-10-11 02:28:58,874 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:58,877 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2021-10-11 02:28:58,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-11 02:28:58,908 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:58,909 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:28:58,909 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:58,909 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:58,909 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:58,910 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:58,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:58,910 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-10-11 02:28:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:28:58,930 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:58,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:28:58,931 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:28:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:58,937 INFO L82 PathProgramCache]: Analyzing trace with hash 3508933, now seen corresponding path program 1 times [2021-10-11 02:28:58,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:58,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213190928] [2021-10-11 02:28:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213190928] [2021-10-11 02:28:59,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:59,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261388200] [2021-10-11 02:28:59,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:28:59,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:28:59,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:28:59,102 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2021-10-11 02:28:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,115 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-10-11 02:28:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:28:59,117 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2021-10-11 02:28:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,125 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:28:59,126 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:28:59,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:28:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:28:59,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-11 02:28:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:28:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-10-11 02:28:59,159 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 4 [2021-10-11 02:28:59,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,159 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-10-11 02:28:59,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:28:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-10-11 02:28:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:59,160 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:59,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:59,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:28:59,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash 108752166, now seen corresponding path program 1 times [2021-10-11 02:28:59,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858722652] [2021-10-11 02:28:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858722652] [2021-10-11 02:28:59,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:59,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460782637] [2021-10-11 02:28:59,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:59,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:59,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:59,245 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 4 states. [2021-10-11 02:28:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,352 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-11 02:28:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:59,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:28:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,354 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:28:59,354 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:28:59,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:28:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2021-10-11 02:28:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:28:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-10-11 02:28:59,361 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 5 [2021-10-11 02:28:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,361 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-10-11 02:28:59,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-10-11 02:28:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:59,362 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:59,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:59,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:28:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,364 INFO L82 PathProgramCache]: Analyzing trace with hash 108752167, now seen corresponding path program 1 times [2021-10-11 02:28:59,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607313516] [2021-10-11 02:28:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607313516] [2021-10-11 02:28:59,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:59,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752619810] [2021-10-11 02:28:59,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:59,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:59,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:59,451 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 4 states. [2021-10-11 02:28:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,551 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-10-11 02:28:59,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:59,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:28:59,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,553 INFO L225 Difference]: With dead ends: 44 [2021-10-11 02:28:59,553 INFO L226 Difference]: Without dead ends: 44 [2021-10-11 02:28:59,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:59,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-11 02:28:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-11 02:28:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-10-11 02:28:59,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-10-11 02:28:59,558 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 5 [2021-10-11 02:28:59,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,559 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-10-11 02:28:59,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-10-11 02:28:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:59,560 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:59,561 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:28:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1430494791, now seen corresponding path program 1 times [2021-10-11 02:28:59,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985915043] [2021-10-11 02:28:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985915043] [2021-10-11 02:28:59,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:59,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568923650] [2021-10-11 02:28:59,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:59,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:59,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:59,629 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2021-10-11 02:28:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,682 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-11 02:28:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:59,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:28:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,683 INFO L225 Difference]: With dead ends: 42 [2021-10-11 02:28:59,683 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 02:28:59,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 02:28:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-11 02:28:59,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-10-11 02:28:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-11 02:28:59,688 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 8 [2021-10-11 02:28:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,688 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-11 02:28:59,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-11 02:28:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:28:59,689 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:28:59,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:28:59,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,690 INFO L82 PathProgramCache]: Analyzing trace with hash 314898583, now seen corresponding path program 1 times [2021-10-11 02:28:59,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206670852] [2021-10-11 02:28:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206670852] [2021-10-11 02:28:59,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:28:59,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526978577] [2021-10-11 02:28:59,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:28:59,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:28:59,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:28:59,765 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2021-10-11 02:28:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,853 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-10-11 02:28:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:28:59,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:28:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,854 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:28:59,854 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 02:28:59,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:28:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 02:28:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-10-11 02:28:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:28:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-10-11 02:28:59,859 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2021-10-11 02:28:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,859 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-10-11 02:28:59,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:28:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-10-11 02:28:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:28:59,860 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,860 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:28:59,861 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:28:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,861 INFO L82 PathProgramCache]: Analyzing trace with hash -953360382, now seen corresponding path program 1 times [2021-10-11 02:28:59,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360673067] [2021-10-11 02:28:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360673067] [2021-10-11 02:28:59,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:28:59,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868267831] [2021-10-11 02:28:59,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:28:59,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:28:59,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:59,912 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2021-10-11 02:29:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,027 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-10-11 02:29:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:00,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:29:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,032 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:29:00,032 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:29:00,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:29:00,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-10-11 02:29:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:29:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-11 02:29:00,046 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 11 [2021-10-11 02:29:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,046 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-11 02:29:00,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:00,046 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-11 02:29:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:29:00,047 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:00,047 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:00,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:00,047 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:00,050 INFO L82 PathProgramCache]: Analyzing trace with hash -953360381, now seen corresponding path program 1 times [2021-10-11 02:29:00,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:00,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585100657] [2021-10-11 02:29:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585100657] [2021-10-11 02:29:00,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:00,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:00,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847905705] [2021-10-11 02:29:00,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:00,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:00,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:00,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:00,139 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2021-10-11 02:29:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,273 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-10-11 02:29:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:00,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:29:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,275 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:29:00,275 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 02:29:00,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 02:29:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-10-11 02:29:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:29:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-10-11 02:29:00,292 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 11 [2021-10-11 02:29:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,292 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-10-11 02:29:00,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-10-11 02:29:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:29:00,293 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:00,293 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:00,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:00,293 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1970000427, now seen corresponding path program 1 times [2021-10-11 02:29:00,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:00,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527427925] [2021-10-11 02:29:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527427925] [2021-10-11 02:29:00,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595501971] [2021-10-11 02:29:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:29:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:00,655 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-10-11 02:29:00,656 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:00,664 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:00,676 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-10-11 02:29:00,677 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:00,683 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:00,684 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:00,684 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2021-10-11 02:29:00,766 INFO L382 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 [2021-10-11 02:29:00,768 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:00,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:00,777 INFO L382 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 [2021-10-11 02:29:00,779 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:00,783 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:00,784 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:00,784 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2021-10-11 02:29:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:00,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:00,866 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:29:00,895 INFO L382 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 35 treesize of output 29 [2021-10-11 02:29:00,899 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-10-11 02:29:00,921 INFO L625 ElimStorePlain]: treesize reduction 27, result has 34.1 percent of original size [2021-10-11 02:29:00,922 INFO L515 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2021-10-11 02:29:00,926 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:29:00,933 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2021-10-11 02:29:00,933 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:53, output treesize:22 [2021-10-11 02:29:01,049 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-10-11 02:29:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:01,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [630418403] [2021-10-11 02:29:01,076 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:29:01,076 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:01,080 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:01,086 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:01,086 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:01,264 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:29:01,762 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:01,950 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-10-11 02:29:02,134 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2021-10-11 02:29:02,341 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-10-11 02:29:02,593 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2021-10-11 02:29:03,420 WARN L197 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 82 [2021-10-11 02:29:03,909 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 78 [2021-10-11 02:29:04,360 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 82 [2021-10-11 02:29:04,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:04,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7, 7] total 19 [2021-10-11 02:29:04,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094054841] [2021-10-11 02:29:04,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:29:04,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:04,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:29:04,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:29:04,397 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2021-10-11 02:29:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:04,506 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-11 02:29:04,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:29:04,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2021-10-11 02:29:04,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:04,516 INFO L225 Difference]: With dead ends: 40 [2021-10-11 02:29:04,516 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 02:29:04,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-10-11 02:29:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 02:29:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-10-11 02:29:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:29:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-10-11 02:29:04,520 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 12 [2021-10-11 02:29:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:04,520 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-11 02:29:04,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:29:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-10-11 02:29:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:29:04,521 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:04,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:04,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 02:29:04,749 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:04,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1970001532, now seen corresponding path program 1 times [2021-10-11 02:29:04,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:04,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811038828] [2021-10-11 02:29:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:04,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:04,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:04,794 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:04,794 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:04,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-11 02:29:04,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:04 BoogieIcfgContainer [2021-10-11 02:29:04,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:04,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:04,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:04,830 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:04,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:58" (3/4) ... [2021-10-11 02:29:04,835 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:29:04,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:04,838 INFO L168 Benchmark]: Toolchain (without parser) took 7056.62 ms. Allocated memory was 94.4 MB in the beginning and 174.1 MB in the end (delta: 79.7 MB). Free memory was 52.9 MB in the beginning and 111.9 MB in the end (delta: -59.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:04,838 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:04,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 462.11 ms. Allocated memory is still 94.4 MB. Free memory was 52.7 MB in the beginning and 57.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:04,839 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.38 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 55.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:04,839 INFO L168 Benchmark]: Boogie Preprocessor took 28.04 ms. Allocated memory is still 94.4 MB. Free memory was 55.7 MB in the beginning and 54.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:04,840 INFO L168 Benchmark]: RCFGBuilder took 534.23 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 82.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:04,840 INFO L168 Benchmark]: TraceAbstraction took 5976.64 ms. Allocated memory was 113.2 MB in the beginning and 174.1 MB in the end (delta: 60.8 MB). Free memory was 82.0 MB in the beginning and 113.0 MB in the end (delta: -31.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:04,841 INFO L168 Benchmark]: Witness Printer took 5.16 ms. Allocated memory is still 174.1 MB. Free memory was 113.0 MB in the beginning and 111.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:04,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 94.4 MB. Free memory is still 71.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 462.11 ms. Allocated memory is still 94.4 MB. Free memory was 52.7 MB in the beginning and 57.5 MB in the end (delta: -4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.38 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 55.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.04 ms. Allocated memory is still 94.4 MB. Free memory was 55.7 MB in the beginning and 54.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 534.23 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 82.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5976.64 ms. Allocated memory was 113.2 MB in the beginning and 174.1 MB in the end (delta: 60.8 MB). Free memory was 82.0 MB in the beginning and 113.0 MB in the end (delta: -31.0 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.16 ms. Allocated memory is still 174.1 MB. Free memory was 113.0 MB in the beginning and 111.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 [L544] p->n = 0 [L545] p = a [L546] COND TRUE p!=0 [L547] EXPR p->h [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n [L550] p = p->n [L546] COND FALSE !(p!=0) [L552] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.8s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 240 SDslu, 123 SDs, 0 SdLazy, 350 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 6977 SizeOfPredicates, 8 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 7/10 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: OVERALL_TIME[ms]: 686, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 17, TOOLS_POST_TIME[ms]: 409, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 17, TOOLS_QUANTIFIERELIM_TIME[ms]: 401, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 145, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 32, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME[ms]: 200, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 2, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME[ms]: 22, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 24, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 23, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 14, DAG_COMPRESSION_PROCESSED_NODES: 124, DAG_COMPRESSION_RETAINED_NODES: 34, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:07,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:07,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:07,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:07,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:07,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:07,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:07,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:07,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:07,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:07,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:07,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:07,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:07,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:07,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:07,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:07,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:07,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:07,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:07,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:07,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:07,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:07,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:07,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:07,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-11 02:29:07,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:07,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:07,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:07,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:29:07,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:07,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:07,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:07,464 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:07,465 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:07,465 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:07,465 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:07,466 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:07,466 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:07,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:29:07,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:29:07,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:07,469 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:07,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:07,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:07,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:07,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:07,471 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:29:07,471 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:29:07,471 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:29:07,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:07,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:07,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:29:07,472 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:29:07,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:07,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:07,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:07,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:29:07,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:07,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:07,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:07,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:07,474 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:29:07,474 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:29:07,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:07,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:07,475 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 621ace555bcaba2bfc5c3f9f05e7d0c3e0e54892 [2021-10-11 02:29:07,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:07,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:07,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:07,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:07,907 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:07,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/list-properties/simple-2.i [2021-10-11 02:29:07,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/d7ee5a48d/64869196fd944a9591c8fee1a5a645bc/FLAG5be66f9fd [2021-10-11 02:29:08,491 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:08,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/sv-benchmarks/c/list-properties/simple-2.i [2021-10-11 02:29:08,507 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/d7ee5a48d/64869196fd944a9591c8fee1a5a645bc/FLAG5be66f9fd [2021-10-11 02:29:08,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/data/d7ee5a48d/64869196fd944a9591c8fee1a5a645bc [2021-10-11 02:29:08,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:08,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:08,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:08,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:08,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:08,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:08" (1/1) ... [2021-10-11 02:29:08,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e867ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:08, skipping insertion in model container [2021-10-11 02:29:08,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:08" (1/1) ... [2021-10-11 02:29:08,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:08,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:09,317 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2021-10-11 02:29:09,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:09,346 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:09,406 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/sv-benchmarks/c/list-properties/simple-2.i[23225,23238] [2021-10-11 02:29:09,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:09,488 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:09,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09 WrapperNode [2021-10-11 02:29:09,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:09,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:09,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:09,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:09,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:09,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:09,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:09,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:09,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... [2021-10-11 02:29:09,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:09,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:09,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:09,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:09,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:09,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:29:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:29:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:29:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:29:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:29:09,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:29:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:10,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:10,084 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:29:10,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:10 BoogieIcfgContainer [2021-10-11 02:29:10,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:10,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:10,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:10,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:10,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:08" (1/3) ... [2021-10-11 02:29:10,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab9a186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:10, skipping insertion in model container [2021-10-11 02:29:10,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:09" (2/3) ... [2021-10-11 02:29:10,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab9a186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:10, skipping insertion in model container [2021-10-11 02:29:10,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:10" (3/3) ... [2021-10-11 02:29:10,100 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-2.i [2021-10-11 02:29:10,129 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:10,132 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2021-10-11 02:29:10,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-11 02:29:10,184 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:10,185 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:29:10,186 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:10,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:10,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:10,186 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:10,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:10,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-10-11 02:29:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:10,211 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:10,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:10,212 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:10,218 INFO L82 PathProgramCache]: Analyzing trace with hash 889599230, now seen corresponding path program 1 times [2021-10-11 02:29:10,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:10,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133541716] [2021-10-11 02:29:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:29:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:10,431 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:10,432 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:10,438 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:10,439 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:10,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:29:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:10,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:10,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133541716] [2021-10-11 02:29:10,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:10,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:10,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811711028] [2021-10-11 02:29:10,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:10,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:10,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:10,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:10,507 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2021-10-11 02:29:10,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:10,719 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-11 02:29:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:10,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:29:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:10,731 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:29:10,731 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:29:10,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:29:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-10-11 02:29:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:29:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2021-10-11 02:29:10,769 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 6 [2021-10-11 02:29:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:10,769 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2021-10-11 02:29:10,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2021-10-11 02:29:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:10,770 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:10,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:10,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:29:10,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash 889599231, now seen corresponding path program 1 times [2021-10-11 02:29:10,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:10,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411176832] [2021-10-11 02:29:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:11,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:29:11,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:11,061 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:11,062 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:11,067 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:11,069 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:11,069 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2021-10-11 02:29:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:11,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:11,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411176832] [2021-10-11 02:29:11,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:11,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:11,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305276199] [2021-10-11 02:29:11,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:11,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:11,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:11,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:11,125 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 4 states. [2021-10-11 02:29:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:11,345 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-11 02:29:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:11,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:29:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:11,347 INFO L225 Difference]: With dead ends: 54 [2021-10-11 02:29:11,347 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:29:11,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:29:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2021-10-11 02:29:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-10-11 02:29:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-10-11 02:29:11,353 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 6 [2021-10-11 02:29:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:11,354 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-10-11 02:29:11,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-10-11 02:29:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:29:11,354 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:11,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:11,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:29:11,571 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:11,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1828101368, now seen corresponding path program 1 times [2021-10-11 02:29:11,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:11,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674652246] [2021-10-11 02:29:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:11,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:29:11,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:11,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:11,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674652246] [2021-10-11 02:29:11,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:11,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:11,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515873176] [2021-10-11 02:29:11,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:11,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:11,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:11,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:11,680 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2021-10-11 02:29:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:11,819 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2021-10-11 02:29:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:11,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:29:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:11,821 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:29:11,821 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:29:11,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:11,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:29:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-10-11 02:29:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-10-11 02:29:11,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2021-10-11 02:29:11,828 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 11 [2021-10-11 02:29:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:11,828 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2021-10-11 02:29:11,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:11,828 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2021-10-11 02:29:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:29:11,829 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:11,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:12,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:29:12,048 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash 836608451, now seen corresponding path program 1 times [2021-10-11 02:29:12,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:12,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361588085] [2021-10-11 02:29:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:12,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:29:12,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:12,150 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-10-11 02:29:12,151 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,160 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2021-10-11 02:29:12,201 INFO L348 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-10-11 02:29:12,201 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 11 [2021-10-11 02:29:12,204 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,206 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,207 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,207 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:9 [2021-10-11 02:29:12,235 INFO L382 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 [2021-10-11 02:29:12,237 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,239 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,239 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,240 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-10-11 02:29:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:12,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:12,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361588085] [2021-10-11 02:29:12,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:12,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:29:12,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978444002] [2021-10-11 02:29:12,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:29:12,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:12,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:29:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:12,253 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 7 states. [2021-10-11 02:29:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:12,599 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-10-11 02:29:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:29:12,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-10-11 02:29:12,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:12,601 INFO L225 Difference]: With dead ends: 82 [2021-10-11 02:29:12,601 INFO L226 Difference]: Without dead ends: 82 [2021-10-11 02:29:12,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:29:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-11 02:29:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2021-10-11 02:29:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:29:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-10-11 02:29:12,609 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 12 [2021-10-11 02:29:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:12,609 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-10-11 02:29:12,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:29:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-10-11 02:29:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:29:12,610 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:12,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:12,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:29:12,828 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash 903973711, now seen corresponding path program 1 times [2021-10-11 02:29:12,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:12,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235285269] [2021-10-11 02:29:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:12,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:29:12,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:12,918 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:12,919 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,921 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,922 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:29:12,944 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:12,945 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,953 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,954 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2021-10-11 02:29:12,978 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-11 02:29:12,994 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:12,996 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:12,996 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2021-10-11 02:29:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:13,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:13,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235285269] [2021-10-11 02:29:13,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:13,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:29:13,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708260130] [2021-10-11 02:29:13,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:29:13,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:13,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:29:13,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:13,021 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2021-10-11 02:29:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:13,380 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-10-11 02:29:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:29:13,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:29:13,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:13,382 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:29:13,382 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 02:29:13,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:29:13,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 02:29:13,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2021-10-11 02:29:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-10-11 02:29:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-10-11 02:29:13,387 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 13 [2021-10-11 02:29:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:13,387 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-10-11 02:29:13,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:29:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-10-11 02:29:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:29:13,388 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:13,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:13,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:29:13,597 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:13,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:13,598 INFO L82 PathProgramCache]: Analyzing trace with hash 903973712, now seen corresponding path program 1 times [2021-10-11 02:29:13,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:13,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412590434] [2021-10-11 02:29:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:13,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:29:13,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:13,666 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-11 02:29:13,666 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,676 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,676 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2021-10-11 02:29:13,727 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:13,727 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,746 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:13,749 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,760 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,765 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:23 [2021-10-11 02:29:13,815 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-11 02:29:13,816 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,829 INFO L382 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 21 treesize of output 9 [2021-10-11 02:29:13,831 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:13,836 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:13,840 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2021-10-11 02:29:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:13,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:29:13,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412590434] [2021-10-11 02:29:13,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:13,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:29:13,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996317923] [2021-10-11 02:29:13,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:29:13,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:13,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:29:13,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:13,887 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 6 states. [2021-10-11 02:29:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:14,302 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-10-11 02:29:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:29:14,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:29:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:14,304 INFO L225 Difference]: With dead ends: 58 [2021-10-11 02:29:14,304 INFO L226 Difference]: Without dead ends: 58 [2021-10-11 02:29:14,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:29:14,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-11 02:29:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 38. [2021-10-11 02:29:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-10-11 02:29:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-11 02:29:14,308 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 13 [2021-10-11 02:29:14,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:14,308 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-11 02:29:14,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:29:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-11 02:29:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:29:14,309 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:14,309 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:14,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:29:14,521 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:14,522 INFO L82 PathProgramCache]: Analyzing trace with hash -288017401, now seen corresponding path program 1 times [2021-10-11 02:29:14,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:14,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365924319] [2021-10-11 02:29:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:14,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:29:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:14,625 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:14,626 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,636 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:14,640 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:14,641 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,647 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:14,648 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,648 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2021-10-11 02:29:14,707 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-11 02:29:14,708 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,718 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:14,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-10-11 02:29:14,722 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,726 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:14,727 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:14,727 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2021-10-11 02:29:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:14,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:14,816 INFO L382 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 35 treesize of output 29 [2021-10-11 02:29:14,830 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-10-11 02:29:14,844 INFO L625 ElimStorePlain]: treesize reduction 19, result has 26.9 percent of original size [2021-10-11 02:29:14,844 INFO L515 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2021-10-11 02:29:14,845 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-11 02:29:14,845 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2021-10-11 02:29:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:14,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365924319] [2021-10-11 02:29:14,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1539634366] [2021-10-11 02:29:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:29:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:14,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:29:14,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:15,036 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:15,037 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,048 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,051 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:15,052 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,061 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,062 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2021-10-11 02:29:15,142 INFO L382 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 [2021-10-11 02:29:15,143 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,153 INFO L382 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 [2021-10-11 02:29:15,156 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,161 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,161 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,162 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2021-10-11 02:29:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:15,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:15,214 INFO L382 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 35 treesize of output 29 [2021-10-11 02:29:15,218 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-10-11 02:29:15,236 INFO L625 ElimStorePlain]: treesize reduction 19, result has 26.9 percent of original size [2021-10-11 02:29:15,237 INFO L515 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2021-10-11 02:29:15,237 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-11 02:29:15,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2021-10-11 02:29:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:15,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785930882] [2021-10-11 02:29:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:15,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:29:15,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:15,335 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:15,335 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,350 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-10-11 02:29:15,350 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,359 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,360 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,360 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2021-10-11 02:29:15,387 INFO L382 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 [2021-10-11 02:29:15,388 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,395 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,397 INFO L382 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 [2021-10-11 02:29:15,398 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:29:15,403 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:29:15,404 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2021-10-11 02:29:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:15,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:15,446 INFO L382 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 35 treesize of output 29 [2021-10-11 02:29:15,448 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-10-11 02:29:15,467 INFO L625 ElimStorePlain]: treesize reduction 19, result has 26.9 percent of original size [2021-10-11 02:29:15,467 INFO L515 ElimStorePlain]: Eliminatee |#memory_$Pointer$.base| vanished before elimination [2021-10-11 02:29:15,468 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-11 02:29:15,468 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:7 [2021-10-11 02:29:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:15,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:29:15,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8, 7] total 11 [2021-10-11 02:29:15,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335776030] [2021-10-11 02:29:15,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:29:15,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:29:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:29:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:29:15,479 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 11 states. [2021-10-11 02:29:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:15,899 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-10-11 02:29:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:29:15,900 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2021-10-11 02:29:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:15,900 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:29:15,901 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:29:15,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:29:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:29:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-10-11 02:29:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:29:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-10-11 02:29:15,905 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 15 [2021-10-11 02:29:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:15,905 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-10-11 02:29:15,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:29:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-10-11 02:29:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:29:15,906 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:15,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:16,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:16,509 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2021-10-11 02:29:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash -338606125, now seen corresponding path program 1 times [2021-10-11 02:29:16,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:29:16,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123360407] [2021-10-11 02:29:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30008d1a-3ef7-40dd-a6cc-1c0ea83ba32f/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:29:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:16,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:16,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:16,651 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:29:16,651 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:16,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:29:16,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:16 BoogieIcfgContainer [2021-10-11 02:29:16,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:16,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:16,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:16,879 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:16,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:10" (3/4) ... [2021-10-11 02:29:16,884 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:29:16,885 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:16,886 INFO L168 Benchmark]: Toolchain (without parser) took 8057.88 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 36.0 MB in the beginning and 62.2 MB in the end (delta: -26.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:16,887 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:16,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.34 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 28.1 MB in the end (delta: 7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.07 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 54.2 MB in the end (delta: -26.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,891 INFO L168 Benchmark]: Boogie Preprocessor took 31.36 ms. Allocated memory is still 71.3 MB. Free memory was 54.2 MB in the beginning and 52.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:16,891 INFO L168 Benchmark]: RCFGBuilder took 481.71 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 49.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,892 INFO L168 Benchmark]: TraceAbstraction took 6790.75 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.6 MB in the beginning and 62.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:16,892 INFO L168 Benchmark]: Witness Printer took 6.32 ms. Allocated memory is still 86.0 MB. Free memory is still 62.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:16,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 58.7 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 659.34 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 28.1 MB in the end (delta: 7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.07 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 27.9 MB in the beginning and 54.2 MB in the end (delta: -26.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.36 ms. Allocated memory is still 71.3 MB. Free memory was 54.2 MB in the beginning and 52.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 481.71 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 49.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6790.75 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.6 MB in the beginning and 62.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.32 ms. Allocated memory is still 86.0 MB. Free memory is still 62.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 1 [L544] p->n = 0 [L545] p = a [L546] COND TRUE p!=0 [L547] EXPR p->h [L547] COND FALSE !(p->h != 1) [L550] EXPR p->n [L550] p = p->n [L546] COND FALSE !(p!=0) [L552] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 162 SDtfs, 397 SDslu, 305 SDs, 0 SdLazy, 577 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 97 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 14336 SizeOfPredicates, 61 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 8/14 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 Received shutdown request...