./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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 f682d6a9f9df80cf11b356f08ea6be5ab5adaf1b414fc8a476877af8610cc552 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:52:03,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:52:03,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:52:03,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:52:03,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:52:03,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:52:03,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:52:03,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:52:03,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:52:03,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:52:03,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:52:03,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:52:03,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:52:03,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:52:03,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:52:03,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:52:03,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:52:03,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:52:03,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:52:03,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:52:03,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:52:03,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:52:03,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:52:03,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:52:04,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:52:04,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:52:04,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:52:04,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:52:04,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:52:04,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:52:04,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:52:04,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:52:04,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:52:04,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:52:04,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:52:04,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:52:04,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:52:04,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:52:04,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:52:04,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:52:04,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:52:04,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 16:52:04,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:52:04,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:52:04,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:52:04,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:52:04,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:52:04,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:52:04,072 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:52:04,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:52:04,073 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:52:04,073 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:52:04,073 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:52:04,074 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:52:04,074 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:52:04,074 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:52:04,075 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:52:04,075 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:52:04,076 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:52:04,076 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:52:04,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 16:52:04,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 16:52:04,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:52:04,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:52:04,078 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 16:52:04,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:52:04,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:52:04,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:52:04,080 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 16:52:04,080 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 16:52:04,080 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 16:52:04,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:52:04,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:52:04,081 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:52:04,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:52:04,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:52:04,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:52:04,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:04,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:52:04,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:52:04,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:52:04,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:52:04,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:52:04,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:52:04,085 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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f682d6a9f9df80cf11b356f08ea6be5ab5adaf1b414fc8a476877af8610cc552 [2021-11-23 16:52:04,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:52:04,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:52:04,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:52:04,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:52:04,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:52:04,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2021-11-23 16:52:04,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/b1af48d39/0cfe89a2824a4569b0f4097fa3c380ad/FLAG30af145d8 [2021-11-23 16:52:05,214 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:52:05,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2021-11-23 16:52:05,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/b1af48d39/0cfe89a2824a4569b0f4097fa3c380ad/FLAG30af145d8 [2021-11-23 16:52:05,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/b1af48d39/0cfe89a2824a4569b0f4097fa3c380ad [2021-11-23 16:52:05,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:52:05,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:52:05,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:05,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:52:05,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:52:05,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:05" (1/1) ... [2021-11-23 16:52:05,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ce957e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:05, skipping insertion in model container [2021-11-23 16:52:05,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:05" (1/1) ... [2021-11-23 16:52:05,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:52:05,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:52:06,177 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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i[24458,24471] [2021-11-23 16:52:06,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:06,203 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:52:06,292 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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i[24458,24471] [2021-11-23 16:52:06,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:06,338 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:52:06,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06 WrapperNode [2021-11-23 16:52:06,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:06,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:06,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:52:06,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:52:06,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,413 INFO L137 Inliner]: procedures = 127, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2021-11-23 16:52:06,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:06,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:52:06,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:52:06,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:52:06,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:52:06,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:52:06,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:52:06,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:52:06,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:06" (1/1) ... [2021-11-23 16:52:06,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:06,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:52:06,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:52:06,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:52:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:52:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:52:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 16:52:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 16:52:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:52:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:52:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:52:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 16:52:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 16:52:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:52:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 16:52:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:52:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:52:06,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:52:06,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:52:06,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:52:07,311 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:52:07,316 INFO L158 Benchmark]: Toolchain (without parser) took 1859.21ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.5MB in the beginning and 56.5MB in the end (delta: -1.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:07,317 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 65.2MB in the beginning and 65.2MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:07,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 880.79ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.3MB in the beginning and 78.8MB in the end (delta: -23.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 16:52:07,319 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.59ms. Allocated memory is still 111.1MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:07,320 INFO L158 Benchmark]: Boogie Preprocessor took 71.24ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 74.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:07,321 INFO L158 Benchmark]: RCFGBuilder took 820.39ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 56.5MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 16:52:07,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 65.2MB in the beginning and 65.2MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 880.79ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.3MB in the beginning and 78.8MB in the end (delta: -23.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.59ms. Allocated memory is still 111.1MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.24ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 74.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 820.39ms. Allocated memory is still 111.1MB. Free memory was 74.6MB in the beginning and 56.5MB in the end (delta: 18.1MB). 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 16:52:07,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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 f682d6a9f9df80cf11b356f08ea6be5ab5adaf1b414fc8a476877af8610cc552 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:52:10,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:52:10,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:52:10,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:52:10,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:52:10,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:52:10,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:52:10,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:52:10,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:52:10,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:52:10,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:52:10,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:52:10,574 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:52:10,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:52:10,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:52:10,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:52:10,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:52:10,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:52:10,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:52:10,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:52:10,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:52:10,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:52:10,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:52:10,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:52:10,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:52:10,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:52:10,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:52:10,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:52:10,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:52:10,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:52:10,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:52:10,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:52:10,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:52:10,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:52:10,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:52:10,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:52:10,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:52:10,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:52:10,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:52:10,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:52:10,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:52:10,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 16:52:10,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:52:10,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:52:10,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:52:10,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:52:10,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:52:10,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:52:10,680 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:52:10,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:52:10,680 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:52:10,681 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:52:10,681 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:52:10,681 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:52:10,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 16:52:10,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 16:52:10,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:52:10,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:52:10,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 16:52:10,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:52:10,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:52:10,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:52:10,685 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 16:52:10,685 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 16:52:10,685 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 16:52:10,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:52:10,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:52:10,686 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:52:10,686 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:52:10,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:52:10,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:52:10,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:52:10,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:52:10,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:52:10,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:10,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:52:10,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:52:10,689 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:52:10,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:52:10,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:52:10,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:52:10,690 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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f682d6a9f9df80cf11b356f08ea6be5ab5adaf1b414fc8a476877af8610cc552 [2021-11-23 16:52:11,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:52:11,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:52:11,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:52:11,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:52:11,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:52:11,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2021-11-23 16:52:11,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/1f0c92462/8f9302da822140548fb4eb374f37b2bb/FLAG2f29cb1f4 [2021-11-23 16:52:12,168 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:52:12,175 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i [2021-11-23 16:52:12,206 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/1f0c92462/8f9302da822140548fb4eb374f37b2bb/FLAG2f29cb1f4 [2021-11-23 16:52:12,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/data/1f0c92462/8f9302da822140548fb4eb374f37b2bb [2021-11-23 16:52:12,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:52:12,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:52:12,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:12,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:52:12,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:52:12,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:12" (1/1) ... [2021-11-23 16:52:12,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@546e045c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:12, skipping insertion in model container [2021-11-23 16:52:12,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:52:12" (1/1) ... [2021-11-23 16:52:12,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:52:12,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:52:12,791 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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i[24458,24471] [2021-11-23 16:52:12,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:12,827 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:52:12,957 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_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/sv-benchmarks/c/list-simple/sll2c_prepend_equal.i[24458,24471] [2021-11-23 16:52:12,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:52:13,018 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:52:13,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13 WrapperNode [2021-11-23 16:52:13,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:52:13,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:13,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:52:13,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:52:13,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,125 INFO L137 Inliner]: procedures = 130, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 144 [2021-11-23 16:52:13,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:52:13,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:52:13,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:52:13,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:52:13,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:52:13,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:52:13,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:52:13,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:52:13,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:52:13" (1/1) ... [2021-11-23 16:52:13,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:52:13,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:52:13,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:52:13,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:52:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:52:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 16:52:13,274 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 16:52:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:52:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:52:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:52:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 16:52:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 16:52:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:52:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:52:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 16:52:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:52:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:52:13,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:52:13,450 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:52:13,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:52:14,205 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:52:14,210 INFO L158 Benchmark]: Toolchain (without parser) took 1919.43ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 36.6MB in the beginning and 57.0MB in the end (delta: -20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 16:52:14,211 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 58.7MB. Free memory is still 39.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:52:14,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 728.60ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 36.7MB in the end (delta: -356.0kB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-11-23 16:52:14,213 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.88ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 34.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:14,214 INFO L158 Benchmark]: Boogie Preprocessor took 64.56ms. Allocated memory is still 58.7MB. Free memory was 34.2MB in the beginning and 32.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:14,215 INFO L158 Benchmark]: RCFGBuilder took 1015.59ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 32.3MB in the beginning and 57.0MB in the end (delta: -24.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2021-11-23 16:52:14,220 INFO L339 ainManager$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 58.7MB. Free memory is still 39.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 728.60ms. Allocated memory is still 58.7MB. Free memory was 36.4MB in the beginning and 36.7MB in the end (delta: -356.0kB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.88ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 34.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.56ms. Allocated memory is still 58.7MB. Free memory was 34.2MB in the beginning and 32.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1015.59ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 32.3MB in the beginning and 57.0MB in the end (delta: -24.7MB). Peak memory consumption was 12.1MB. 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 16:52:14,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa300c6-d948-4f57-a7b1-e4ff60d6b73a/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