./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/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_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:01:35,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:01:35,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:01:35,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:01:35,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:01:35,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:01:35,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:01:35,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:01:35,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:01:35,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:01:35,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:01:35,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:01:35,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:01:35,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:01:35,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:01:35,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:01:35,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:01:35,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:01:35,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:01:35,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:01:35,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:01:35,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:01:35,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:01:35,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:01:35,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:01:35,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:01:35,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:01:35,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:01:35,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:01:35,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:01:35,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:01:35,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:01:35,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:01:35,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:01:35,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:01:35,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:01:35,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:01:35,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:01:35,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:01:35,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:01:35,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:01:35,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:01:35,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:01:35,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:01:35,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:01:35,206 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:01:35,207 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:01:35,207 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:01:35,207 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:01:35,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:01:35,208 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:01:35,208 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:01:35,209 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:01:35,209 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:01:35,209 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:01:35,209 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:01:35,210 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:01:35,210 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:01:35,210 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:01:35,210 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:01:35,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:01:35,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:01:35,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:01:35,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:01:35,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:01:35,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:01:35,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:01:35,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:01:35,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:01:35,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:01:35,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:01:35,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:01:35,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:01:35,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:01:35,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:35,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:01:35,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:01:35,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:01:35,215 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:01:35,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:01:35,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:01:35,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:01:35,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:01:35,215 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_bb59b461-057c-42ee-b304-92c20d6a48a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab [2021-11-23 17:01:35,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:01:35,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:01:35,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:01:35,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:01:35,576 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:01:35,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2021-11-23 17:01:35,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/75bdbcbb8/997f2365e4d44c6c95491d62c95a25e5/FLAGbfd0f0d56 [2021-11-23 17:01:36,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:01:36,381 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2021-11-23 17:01:36,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/75bdbcbb8/997f2365e4d44c6c95491d62c95a25e5/FLAGbfd0f0d56 [2021-11-23 17:01:36,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/75bdbcbb8/997f2365e4d44c6c95491d62c95a25e5 [2021-11-23 17:01:36,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:01:36,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:01:36,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:36,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:01:36,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:01:36,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:36" (1/1) ... [2021-11-23 17:01:36,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e20ad68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:36, skipping insertion in model container [2021-11-23 17:01:36,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:36" (1/1) ... [2021-11-23 17:01:36,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:01:36,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:01:37,059 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_bb59b461-057c-42ee-b304-92c20d6a48a9/sv-benchmarks/c/list-simple/sll2n_append_unequal.i[24323,24336] [2021-11-23 17:01:37,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:37,082 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:01:37,156 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_bb59b461-057c-42ee-b304-92c20d6a48a9/sv-benchmarks/c/list-simple/sll2n_append_unequal.i[24323,24336] [2021-11-23 17:01:37,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:37,186 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:01:37,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37 WrapperNode [2021-11-23 17:01:37,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:37,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:37,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:01:37,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:01:37,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,263 INFO L137 Inliner]: procedures = 127, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2021-11-23 17:01:37,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:37,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:01:37,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:01:37,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:01:37,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:01:37,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:01:37,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:01:37,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:01:37,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:37" (1/1) ... [2021-11-23 17:01:37,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:37,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:01:37,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:01:37,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:01:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 17:01:37,477 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 17:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:01:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:01:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:01:37,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:01:37,589 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:01:37,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:01:37,848 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:01:37,855 INFO L158 Benchmark]: Toolchain (without parser) took 1218.73ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 39.1MB in the beginning and 92.5MB in the end (delta: -53.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-23 17:01:37,856 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 81.8MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:01:37,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.18ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 38.9MB in the beginning and 89.5MB in the end (delta: -50.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-23 17:01:37,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.58ms. Allocated memory is still 125.8MB. Free memory was 89.5MB in the beginning and 86.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:01:37,859 INFO L158 Benchmark]: Boogie Preprocessor took 43.10ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 84.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:01:37,860 INFO L158 Benchmark]: RCFGBuilder took 541.36ms. Allocated memory is still 125.8MB. Free memory was 84.5MB in the beginning and 92.5MB in the end (delta: -8.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 17:01:37,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 81.8MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.18ms. Allocated memory was 81.8MB in the beginning and 125.8MB in the end (delta: 44.0MB). Free memory was 38.9MB in the beginning and 89.5MB in the end (delta: -50.7MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.58ms. Allocated memory is still 125.8MB. Free memory was 89.5MB in the beginning and 86.2MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.10ms. Allocated memory is still 125.8MB. Free memory was 86.2MB in the beginning and 84.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 541.36ms. Allocated memory is still 125.8MB. Free memory was 84.5MB in the beginning and 92.5MB in the end (delta: -8.0MB). Peak memory consumption was 4.2MB. 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 17:01:37,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/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 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_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/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_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:01:40,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:01:40,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:01:40,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:01:40,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:01:40,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:01:40,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:01:40,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:01:40,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:01:40,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:01:40,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:01:40,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:01:40,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:01:40,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:01:40,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:01:40,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:01:40,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:01:40,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:01:40,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:01:40,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:01:40,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:01:40,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:01:40,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:01:40,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:01:40,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:01:40,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:01:40,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:01:40,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:01:40,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:01:40,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:01:40,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:01:40,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:01:40,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:01:40,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:01:40,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:01:40,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:01:40,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:01:40,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:01:40,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:01:40,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:01:40,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:01:40,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:01:40,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:01:40,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:01:40,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:01:40,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:01:40,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:01:40,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:01:40,690 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:01:40,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:01:40,691 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:01:40,691 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:01:40,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:01:40,693 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:01:40,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:01:40,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:01:40,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:01:40,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:01:40,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:01:40,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:01:40,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:01:40,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:01:40,696 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:01:40,697 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:01:40,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:01:40,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:01:40,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:01:40,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:01:40,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:01:40,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:01:40,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:01:40,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:40,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:01:40,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:01:40,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:01:40,700 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:01:40,700 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:01:40,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:01:40,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:01:40,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:01:40,701 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_bb59b461-057c-42ee-b304-92c20d6a48a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 742ffe63db70127807dbc7584eb0c51633a9ed1be5f19fa1a247e43392d52dab [2021-11-23 17:01:41,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:01:41,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:01:41,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:01:41,138 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:01:41,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:01:41,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2021-11-23 17:01:41,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/ab395abbf/b2095bdff84944779caff9a7e0abd5e1/FLAG67c22a83a [2021-11-23 17:01:41,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:01:41,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/sv-benchmarks/c/list-simple/sll2n_append_unequal.i [2021-11-23 17:01:41,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/ab395abbf/b2095bdff84944779caff9a7e0abd5e1/FLAG67c22a83a [2021-11-23 17:01:42,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/data/ab395abbf/b2095bdff84944779caff9a7e0abd5e1 [2021-11-23 17:01:42,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:01:42,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:01:42,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:42,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:01:42,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:01:42,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae07b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42, skipping insertion in model container [2021-11-23 17:01:42,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:01:42,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:01:42,660 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_bb59b461-057c-42ee-b304-92c20d6a48a9/sv-benchmarks/c/list-simple/sll2n_append_unequal.i[24323,24336] [2021-11-23 17:01:42,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:42,687 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:01:42,739 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_bb59b461-057c-42ee-b304-92c20d6a48a9/sv-benchmarks/c/list-simple/sll2n_append_unequal.i[24323,24336] [2021-11-23 17:01:42,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:01:42,776 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:01:42,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42 WrapperNode [2021-11-23 17:01:42,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:01:42,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:42,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:01:42,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:01:42,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,856 INFO L137 Inliner]: procedures = 130, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2021-11-23 17:01:42,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:01:42,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:01:42,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:01:42,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:01:42,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:01:42,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:01:42,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:01:42,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:01:42,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:01:42" (1/1) ... [2021-11-23 17:01:42,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:01:42,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:01:42,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:01:42,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:01:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:01:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 17:01:43,003 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 17:01:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:01:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:01:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:01:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:01:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:01:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:01:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:01:43,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:01:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:01:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:01:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:01:43,154 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:01:43,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:01:43,509 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:01:43,514 INFO L158 Benchmark]: Toolchain (without parser) took 1312.77ms. Allocated memory is still 73.4MB. Free memory was 47.8MB in the beginning and 50.9MB in the end (delta: -3.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 17:01:43,518 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 30.0MB in the beginning and 30.0MB in the end (delta: 36.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:01:43,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.64ms. Allocated memory is still 73.4MB. Free memory was 47.5MB in the beginning and 48.1MB in the end (delta: -520.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:01:43,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.20ms. Allocated memory is still 73.4MB. Free memory was 47.8MB in the beginning and 45.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:01:43,520 INFO L158 Benchmark]: Boogie Preprocessor took 44.06ms. Allocated memory is still 73.4MB. Free memory was 45.6MB in the beginning and 43.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:01:43,521 INFO L158 Benchmark]: RCFGBuilder took 609.08ms. Allocated memory is still 73.4MB. Free memory was 43.7MB in the beginning and 50.9MB in the end (delta: -7.2MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-11-23 17:01:43,525 INFO L339 ainManager$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 50.3MB. Free memory was 30.0MB in the beginning and 30.0MB in the end (delta: 36.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.64ms. Allocated memory is still 73.4MB. Free memory was 47.5MB in the beginning and 48.1MB in the end (delta: -520.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.20ms. Allocated memory is still 73.4MB. Free memory was 47.8MB in the beginning and 45.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.06ms. Allocated memory is still 73.4MB. Free memory was 45.6MB in the beginning and 43.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 609.08ms. Allocated memory is still 73.4MB. Free memory was 43.7MB in the beginning and 50.9MB in the end (delta: -7.2MB). Peak memory consumption was 14.9MB. 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 17:01:43,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb59b461-057c-42ee-b304-92c20d6a48a9/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