./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl --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 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:10:35,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:10:35,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:10:35,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:10:35,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:10:35,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:10:35,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:10:35,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:10:35,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:10:35,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:10:35,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:10:35,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:10:35,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:10:35,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:10:35,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:10:35,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:10:35,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:10:35,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:10:35,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:10:35,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:10:35,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:10:35,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:10:35,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:10:35,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:10:35,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:10:35,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:10:35,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:10:35,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:10:35,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:10:35,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:10:35,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:10:35,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:10:35,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:10:35,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:10:35,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:10:35,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:10:35,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:10:35,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:10:35,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:10:35,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:10:35,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:10:35,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 17:10:35,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:10:35,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:10:35,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:10:35,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:10:35,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:10:35,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:10:35,622 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:10:35,622 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:10:35,623 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:10:35,623 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:10:35,623 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:10:35,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:10:35,624 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:10:35,624 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:10:35,624 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:10:35,625 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:10:35,625 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:10:35,625 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:10:35,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:10:35,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:10:35,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:10:35,627 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:10:35,628 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:10:35,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:10:35,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:10:35,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:10:35,629 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:10:35,629 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:10:35,630 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:10:35,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:10:35,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:10:35,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:10:35,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:10:35,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:10:35,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:10:35,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:35,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:10:35,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:10:35,633 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:10:35,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:10:35,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:10:35,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:10:35,634 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_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2021-11-23 17:10:35,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:10:35,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:10:35,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:10:35,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:10:35,917 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:10:35,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2021-11-23 17:10:35,988 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/c1244a974/93130fc168f74f1ba70331b6da9f8fc8/FLAGda7cbea13 [2021-11-23 17:10:36,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:10:36,567 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2021-11-23 17:10:36,588 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/c1244a974/93130fc168f74f1ba70331b6da9f8fc8/FLAGda7cbea13 [2021-11-23 17:10:36,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/c1244a974/93130fc168f74f1ba70331b6da9f8fc8 [2021-11-23 17:10:36,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:10:36,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:10:36,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:36,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:10:36,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:10:36,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:36" (1/1) ... [2021-11-23 17:10:36,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11bc530d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:36, skipping insertion in model container [2021-11-23 17:10:36,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:36" (1/1) ... [2021-11-23 17:10:36,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:10:36,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:10:37,377 WARN L230 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_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2021-11-23 17:10:37,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:37,404 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:10:37,478 WARN L230 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_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2021-11-23 17:10:37,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:37,512 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:10:37,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37 WrapperNode [2021-11-23 17:10:37,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:37,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:37,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:10:37,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:10:37,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,564 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 141 [2021-11-23 17:10:37,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:37,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:10:37,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:10:37,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:10:37,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:10:37,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:10:37,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:10:37,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:10:37,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:37" (1/1) ... [2021-11-23 17:10:37,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:37,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:10:37,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:10:37,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:10:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:10:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:10:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 17:10:37,695 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:10:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:10:37,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:10:37,809 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:10:37,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:10:38,282 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:10:38,287 INFO L158 Benchmark]: Toolchain (without parser) took 1443.23ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 61.1MB in the end (delta: 22.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2021-11-23 17:10:38,288 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:10:38,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 668.44ms. Allocated memory is still 117.4MB. Free memory was 83.6MB in the beginning and 82.0MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:10:38,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.21ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 79.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:10:38,291 INFO L158 Benchmark]: Boogie Preprocessor took 43.90ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:10:38,292 INFO L158 Benchmark]: RCFGBuilder took 675.24ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 61.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 17:10:38,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 668.44ms. Allocated memory is still 117.4MB. Free memory was 83.6MB in the beginning and 82.0MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.21ms. Allocated memory is still 117.4MB. Free memory was 82.0MB in the beginning and 79.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.90ms. Allocated memory is still 117.4MB. Free memory was 79.5MB in the beginning and 77.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 675.24ms. Allocated memory is still 117.4MB. Free memory was 77.8MB in the beginning and 61.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:10:38,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl --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 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:10:41,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:10:41,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:10:41,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:10:41,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:10:41,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:10:41,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:10:41,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:10:41,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:10:41,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:10:41,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:10:41,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:10:41,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:10:41,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:10:41,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:10:41,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:10:41,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:10:41,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:10:41,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:10:41,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:10:41,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:10:41,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:10:41,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:10:41,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:10:41,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:10:41,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:10:41,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:10:41,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:10:41,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:10:41,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:10:41,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:10:41,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:10:41,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:10:41,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:10:41,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:10:41,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:10:41,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:10:41,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:10:41,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:10:41,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:10:41,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:10:41,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 17:10:41,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:10:41,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:10:41,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:10:41,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:10:41,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:10:41,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:10:41,297 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:10:41,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:10:41,298 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:10:41,298 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:10:41,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:10:41,300 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:10:41,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:10:41,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:10:41,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:10:41,303 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:10:41,303 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:10:41,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:10:41,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:10:41,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:10:41,305 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:10:41,305 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:10:41,305 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:10:41,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:10:41,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:10:41,306 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:10:41,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:10:41,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:10:41,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:10:41,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:10:41,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:10:41,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:10:41,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:41,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:10:41,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:10:41,310 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:10:41,310 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:10:41,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:10:41,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:10:41,311 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_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e4e2611155a39995b0fc64ec45d64e4c98f789d2737326ee819380629347be0 [2021-11-23 17:10:41,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:10:41,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:10:41,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:10:41,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:10:41,738 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:10:41,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2021-11-23 17:10:41,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/5d67370d5/f5d98b8b144741c2ba0b70112f2ded3d/FLAG8b13eb59b [2021-11-23 17:10:42,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:10:42,470 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/sv-benchmarks/c/list-simple/dll2n_append_unequal.i [2021-11-23 17:10:42,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/5d67370d5/f5d98b8b144741c2ba0b70112f2ded3d/FLAG8b13eb59b [2021-11-23 17:10:42,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/data/5d67370d5/f5d98b8b144741c2ba0b70112f2ded3d [2021-11-23 17:10:42,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:10:42,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:10:42,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:42,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:10:42,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:10:42,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:42" (1/1) ... [2021-11-23 17:10:42,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dadc39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:42, skipping insertion in model container [2021-11-23 17:10:42,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:10:42" (1/1) ... [2021-11-23 17:10:42,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:10:42,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:10:43,169 WARN L230 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_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2021-11-23 17:10:43,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:43,197 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:10:43,280 WARN L230 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_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/sv-benchmarks/c/list-simple/dll2n_append_unequal.i[24457,24470] [2021-11-23 17:10:43,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:10:43,345 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:10:43,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43 WrapperNode [2021-11-23 17:10:43,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:10:43,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:43,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:10:43,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:10:43,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,434 INFO L137 Inliner]: procedures = 130, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 142 [2021-11-23 17:10:43,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:10:43,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:10:43,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:10:43,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:10:43,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:10:43,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:10:43,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:10:43,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:10:43,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:10:43" (1/1) ... [2021-11-23 17:10:43,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:10:43,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:10:43,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:10:43,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:10:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:10:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 17:10:43,583 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 17:10:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:10:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:10:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:10:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:10:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:10:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:10:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:10:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:10:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:10:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:10:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:10:43,704 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:10:43,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:10:44,305 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:10:44,310 INFO L158 Benchmark]: Toolchain (without parser) took 1577.74ms. Allocated memory is still 92.3MB. Free memory was 54.3MB in the beginning and 66.5MB in the end (delta: -12.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2021-11-23 17:10:44,310 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:10:44,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.81ms. Allocated memory is still 92.3MB. Free memory was 54.2MB in the beginning and 59.5MB in the end (delta: -5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:10:44,312 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.03ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 57.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:10:44,313 INFO L158 Benchmark]: Boogie Preprocessor took 59.44ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 55.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:10:44,314 INFO L158 Benchmark]: RCFGBuilder took 811.20ms. Allocated memory is still 92.3MB. Free memory was 55.3MB in the beginning and 66.5MB in the end (delta: -11.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-23 17:10:44,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 92.3MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.81ms. Allocated memory is still 92.3MB. Free memory was 54.2MB in the beginning and 59.5MB in the end (delta: -5.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.03ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 57.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.44ms. Allocated memory is still 92.3MB. Free memory was 57.1MB in the beginning and 55.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 811.20ms. Allocated memory is still 92.3MB. Free memory was 55.3MB in the beginning and 66.5MB in the end (delta: -11.2MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:10:44,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1095a6cf-7fa3-4b2d-a001-a2a096f9d631/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable