./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_prepend_equal.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_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/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_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/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_db80bcf0-a618-4f0d-870d-e81aa547d1de/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 e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:47:57,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:47:57,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:47:57,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:47:57,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:47:57,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:47:57,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:47:57,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:47:57,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:47:57,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:47:57,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:47:57,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:47:57,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:47:57,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:47:57,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:47:57,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:47:57,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:47:57,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:47:57,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:47:57,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:47:57,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:47:57,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:47:57,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:47:57,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:47:57,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:47:57,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:47:57,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:47:57,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:47:57,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:47:57,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:47:57,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:47:57,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:47:57,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:47:57,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:47:57,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:47:57,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:47:57,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:47:57,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:47:57,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:47:57,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:47:57,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:47:57,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:47:57,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:47:57,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:47:57,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:47:57,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:47:57,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:47:57,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:47:57,493 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:47:57,493 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:47:57,494 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:47:57,494 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:47:57,494 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:47:57,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:47:57,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:47:57,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:47:57,495 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:47:57,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:47:57,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:47:57,496 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:47:57,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:47:57,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:47:57,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:47:57,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:47:57,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:47:57,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:47:57,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:47:57,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:47:57,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:47:57,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:47:57,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:47:57,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:47:57,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:47:57,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:47:57,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:57,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:47:57,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:47:57,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:47:57,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:47:57,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:47:57,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:47:57,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:47:57,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:47:57,502 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_db80bcf0-a618-4f0d-870d-e81aa547d1de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 [2021-11-23 16:47:57,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:47:57,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:47:57,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:47:57,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:47:57,812 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:47:57,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-11-23 16:47:57,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/ea18af498/eb46bbc78f704d09939f5224a7a6a10c/FLAG1425e518b [2021-11-23 16:47:58,421 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:47:58,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-11-23 16:47:58,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/ea18af498/eb46bbc78f704d09939f5224a7a6a10c/FLAG1425e518b [2021-11-23 16:47:58,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/ea18af498/eb46bbc78f704d09939f5224a7a6a10c [2021-11-23 16:47:58,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:47:58,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:47:58,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:58,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:47:58,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:47:58,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:58" (1/1) ... [2021-11-23 16:47:58,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42224ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:58, skipping insertion in model container [2021-11-23 16:47:58,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:47:58" (1/1) ... [2021-11-23 16:47:58,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:47:58,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:47:59,142 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_db80bcf0-a618-4f0d-870d-e81aa547d1de/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i[24640,24653] [2021-11-23 16:47:59,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:59,163 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:47:59,230 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_db80bcf0-a618-4f0d-870d-e81aa547d1de/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i[24640,24653] [2021-11-23 16:47:59,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:47:59,277 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:47:59,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59 WrapperNode [2021-11-23 16:47:59,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:47:59,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:59,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:47:59,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:47:59,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,366 INFO L137 Inliner]: procedures = 127, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2021-11-23 16:47:59,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:47:59,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:47:59,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:47:59,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:47:59,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:47:59,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:47:59,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:47:59,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:47:59,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:47:59" (1/1) ... [2021-11-23 16:47:59,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:47:59,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:47:59,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:47:59,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:47:59,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 16:47:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 16:47:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:47:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 16:47:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:47:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:47:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:47:59,630 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:47:59,632 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:47:59,953 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:47:59,958 INFO L158 Benchmark]: Toolchain (without parser) took 1251.96ms. Allocated memory is still 134.2MB. Free memory was 94.1MB in the beginning and 81.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-11-23 16:47:59,958 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 112.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:47:59,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.07ms. Allocated memory is still 134.2MB. Free memory was 93.9MB in the beginning and 100.3MB in the end (delta: -6.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:47:59,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.25ms. Allocated memory is still 134.2MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:47:59,961 INFO L158 Benchmark]: Boogie Preprocessor took 57.25ms. Allocated memory is still 134.2MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:47:59,962 INFO L158 Benchmark]: RCFGBuilder took 530.39ms. Allocated memory is still 134.2MB. Free memory was 95.7MB in the beginning and 81.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 16:47:59,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 112.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.07ms. Allocated memory is still 134.2MB. Free memory was 93.9MB in the beginning and 100.3MB in the end (delta: -6.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.25ms. Allocated memory is still 134.2MB. Free memory was 99.9MB in the beginning and 97.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.25ms. Allocated memory is still 134.2MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 530.39ms. Allocated memory is still 134.2MB. Free memory was 95.7MB in the beginning and 81.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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 16:48:00,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/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_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/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_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/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_db80bcf0-a618-4f0d-870d-e81aa547d1de/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 e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:48:02,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:48:02,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:48:02,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:48:02,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:48:02,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:48:02,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:48:02,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:48:02,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:48:02,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:48:02,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:48:02,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:48:02,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:48:02,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:48:02,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:48:02,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:48:02,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:48:02,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:48:02,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:48:02,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:48:02,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:48:02,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:48:02,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:48:02,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:48:02,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:48:02,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:48:02,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:48:02,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:48:02,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:48:02,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:48:02,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:48:02,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:48:02,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:48:02,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:48:02,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:48:02,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:48:02,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:48:02,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:48:02,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:48:02,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:48:02,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:48:02,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:48:02,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:48:02,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:48:02,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:48:02,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:48:02,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:48:02,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:48:02,454 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:48:02,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:48:02,455 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:48:02,455 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:48:02,455 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:48:02,456 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:48:02,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:48:02,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:48:02,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:48:02,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:48:02,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:48:02,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:48:02,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:48:02,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:48:02,459 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:48:02,459 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:48:02,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:48:02,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:48:02,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:48:02,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:48:02,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:48:02,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:48:02,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:48:02,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:02,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:48:02,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:48:02,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:48:02,462 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:48:02,462 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:48:02,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:48:02,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:48:02,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:48:02,463 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_db80bcf0-a618-4f0d-870d-e81aa547d1de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 [2021-11-23 16:48:02,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:48:02,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:48:02,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:48:02,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:48:02,827 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:48:02,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-11-23 16:48:02,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/9ca0c2fd0/6bd07bbcec6a4b108d79b507899c235d/FLAG5a72dd5d5 [2021-11-23 16:48:03,474 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:48:03,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-11-23 16:48:03,492 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/9ca0c2fd0/6bd07bbcec6a4b108d79b507899c235d/FLAG5a72dd5d5 [2021-11-23 16:48:03,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/data/9ca0c2fd0/6bd07bbcec6a4b108d79b507899c235d [2021-11-23 16:48:03,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:48:03,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:48:03,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:03,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:48:03,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:48:03,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:03" (1/1) ... [2021-11-23 16:48:03,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e9b8b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:03, skipping insertion in model container [2021-11-23 16:48:03,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:48:03" (1/1) ... [2021-11-23 16:48:03,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:48:03,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:48:04,198 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_db80bcf0-a618-4f0d-870d-e81aa547d1de/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i[24640,24653] [2021-11-23 16:48:04,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:04,213 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:48:04,290 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_db80bcf0-a618-4f0d-870d-e81aa547d1de/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i[24640,24653] [2021-11-23 16:48:04,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:48:04,328 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:48:04,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04 WrapperNode [2021-11-23 16:48:04,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:48:04,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:04,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:48:04,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:48:04,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,391 INFO L137 Inliner]: procedures = 130, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2021-11-23 16:48:04,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:48:04,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:48:04,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:48:04,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:48:04,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:48:04,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:48:04,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:48:04,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:48:04,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:48:04" (1/1) ... [2021-11-23 16:48:04,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:48:04,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:48:04,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:48:04,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:48:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 16:48:04,566 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-23 16:48:04,566 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 16:48:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 16:48:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 16:48:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:48:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:48:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:48:04,767 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:48:04,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:48:05,317 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:48:05,320 INFO L158 Benchmark]: Toolchain (without parser) took 1550.59ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.6MB in the beginning and 45.4MB in the end (delta: -11.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:05,321 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 56.6MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:48:05,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.04ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.4MB in the beginning and 48.5MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:48:05,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.24ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 46.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:05,323 INFO L158 Benchmark]: Boogie Preprocessor took 55.07ms. Allocated memory is still 73.4MB. Free memory was 46.2MB in the beginning and 44.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:48:05,327 INFO L158 Benchmark]: RCFGBuilder took 870.62ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 45.4MB in the end (delta: -1.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-11-23 16:48:05,330 INFO L339 ainManager$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 56.6MB. Free memory is still 37.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.04ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.4MB in the beginning and 48.5MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.24ms. Allocated memory is still 73.4MB. Free memory was 48.5MB in the beginning and 46.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.07ms. Allocated memory is still 73.4MB. Free memory was 46.2MB in the beginning and 44.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 870.62ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 45.4MB in the end (delta: -1.3MB). Peak memory consumption was 10.6MB. 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 16:48:05,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db80bcf0-a618-4f0d-870d-e81aa547d1de/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