./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:04:41,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:04:41,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:04:41,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:04:41,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:04:41,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:04:41,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:04:41,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:04:41,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:04:41,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:04:41,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:04:41,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:04:41,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:04:41,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:04:41,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:04:41,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:04:41,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:04:41,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:04:41,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:04:41,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:04:41,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:04:41,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:04:41,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:04:41,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:04:41,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:04:41,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:04:41,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:04:41,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:04:41,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:04:41,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:04:41,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:04:41,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:04:41,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:04:41,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:04:41,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:04:41,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:04:41,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:04:41,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:04:41,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:04:41,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:04:41,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:04:41,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 15:04:41,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:04:41,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:04:41,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:04:41,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:04:41,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:04:41,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:04:41,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 15:04:41,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 15:04:41,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:04:41,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:04:41,526 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 15:04:41,532 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 15:04:41,533 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 15:04:41,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:04:41,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:04:41,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:04:41,534 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:04:41,534 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:04:41,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:04:41,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:41,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:04:41,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:04:41,535 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 15:04:41,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 15:04:41,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2021-11-23 15:04:41,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:04:41,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:04:41,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:04:41,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:04:41,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:04:41,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2021-11-23 15:04:41,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/aad558cec/994738f5d01e4d0ca9d21f7a7974c57f/FLAG0886c38d3 [2021-11-23 15:04:42,460 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:04:42,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2021-11-23 15:04:42,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/aad558cec/994738f5d01e4d0ca9d21f7a7974c57f/FLAG0886c38d3 [2021-11-23 15:04:42,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/aad558cec/994738f5d01e4d0ca9d21f7a7974c57f [2021-11-23 15:04:42,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:04:42,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:04:42,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:42,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:04:42,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:04:42,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:42" (1/1) ... [2021-11-23 15:04:42,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64732d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:42, skipping insertion in model container [2021-11-23 15:04:42,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:42" (1/1) ... [2021-11-23 15:04:42,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:04:42,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:04:43,188 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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2021-11-23 15:04:43,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:43,199 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:04:43,238 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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2021-11-23 15:04:43,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:43,278 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:04:43,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43 WrapperNode [2021-11-23 15:04:43,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:43,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:43,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:04:43,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:04:43,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,360 INFO L137 Inliner]: procedures = 127, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2021-11-23 15:04:43,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:43,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:04:43,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:04:43,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:04:43,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:04:43,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:04:43,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:04:43,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:04:43,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:43" (1/1) ... [2021-11-23 15:04:43,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:43,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:04:43,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:04:43,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:04:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 15:04:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 15:04:43,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 15:04:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 15:04:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 15:04:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 15:04:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 15:04:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 15:04:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 15:04:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 15:04:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:04:43,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:04:43,663 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:04:43,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:04:43,718 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 15:04:43,723 INFO L158 Benchmark]: Toolchain (without parser) took 980.17ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 78.0MB in the end (delta: 10.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-23 15:04:43,723 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 77.6MB. Free memory was 31.4MB in the beginning and 31.4MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:04:43,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.42ms. Allocated memory is still 121.6MB. Free memory was 87.9MB in the beginning and 89.9MB in the end (delta: -2.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 15:04:43,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.83ms. Allocated memory is still 121.6MB. Free memory was 89.9MB in the beginning and 87.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:04:43,726 INFO L158 Benchmark]: Boogie Preprocessor took 52.85ms. Allocated memory is still 121.6MB. Free memory was 87.8MB in the beginning and 86.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:04:43,727 INFO L158 Benchmark]: RCFGBuilder took 304.29ms. Allocated memory is still 121.6MB. Free memory was 86.0MB in the beginning and 78.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 15:04:43,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 77.6MB. Free memory was 31.4MB in the beginning and 31.4MB in the end (delta: 44.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.42ms. Allocated memory is still 121.6MB. Free memory was 87.9MB in the beginning and 89.9MB in the end (delta: -2.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.83ms. Allocated memory is still 121.6MB. Free memory was 89.9MB in the beginning and 87.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.85ms. Allocated memory is still 121.6MB. Free memory was 87.8MB in the beginning and 86.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.29ms. Allocated memory is still 121.6MB. Free memory was 86.0MB in the beginning and 78.0MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. 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 15:04:43,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 15:04:46,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 15:04:46,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 15:04:46,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 15:04:46,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 15:04:46,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 15:04:46,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 15:04:46,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 15:04:46,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 15:04:46,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 15:04:46,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 15:04:46,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 15:04:46,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 15:04:46,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 15:04:46,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 15:04:46,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 15:04:46,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 15:04:46,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 15:04:46,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 15:04:46,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 15:04:46,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 15:04:46,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 15:04:46,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 15:04:46,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 15:04:46,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 15:04:46,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 15:04:46,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 15:04:46,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 15:04:46,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 15:04:46,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 15:04:46,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 15:04:46,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 15:04:46,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 15:04:46,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 15:04:46,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 15:04:46,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 15:04:46,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 15:04:46,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 15:04:46,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 15:04:46,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 15:04:46,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 15:04:46,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Bitvector.epf [2021-11-23 15:04:46,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 15:04:46,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 15:04:46,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 15:04:46,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 15:04:46,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 15:04:46,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 15:04:46,482 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 15:04:46,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 15:04:46,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 15:04:46,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 15:04:46,482 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 15:04:46,482 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 15:04:46,483 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 15:04:46,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 15:04:46,483 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 15:04:46,483 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 15:04:46,483 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 15:04:46,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 15:04:46,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 15:04:46,484 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 15:04:46,484 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 15:04:46,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 15:04:46,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:46,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 15:04:46,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 15:04:46,485 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 15:04:46,485 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 15:04:46,485 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2021-11-23 15:04:46,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 15:04:46,486 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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46bbe683d8965e9a855fbd780578b958a816bbdd25bc1fa0d6151e1b826f8669 [2021-11-23 15:04:46,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 15:04:46,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 15:04:46,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 15:04:46,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 15:04:46,933 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 15:04:46,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/../../sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2021-11-23 15:04:47,021 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/70fa567dc/ae02d2e342bc4935b8dfba00f9b4a2c1/FLAGb51e69277 [2021-11-23 15:04:47,666 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 15:04:47,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i [2021-11-23 15:04:47,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/70fa567dc/ae02d2e342bc4935b8dfba00f9b4a2c1/FLAGb51e69277 [2021-11-23 15:04:47,933 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/data/70fa567dc/ae02d2e342bc4935b8dfba00f9b4a2c1 [2021-11-23 15:04:47,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 15:04:47,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 15:04:47,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:47,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 15:04:47,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 15:04:47,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:47" (1/1) ... [2021-11-23 15:04:47,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ea326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:47, skipping insertion in model container [2021-11-23 15:04:47,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:47" (1/1) ... [2021-11-23 15:04:47,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 15:04:47,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 15:04:48,319 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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2021-11-23 15:04:48,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:48,334 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 15:04:48,379 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_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/sv-benchmarks/c/list-simple/dll2n_prepend_equal.i[24361,24374] [2021-11-23 15:04:48,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 15:04:48,416 INFO L208 MainTranslator]: Completed translation [2021-11-23 15:04:48,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48 WrapperNode [2021-11-23 15:04:48,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 15:04:48,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:48,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 15:04:48,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 15:04:48,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,478 INFO L137 Inliner]: procedures = 130, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2021-11-23 15:04:48,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 15:04:48,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 15:04:48,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 15:04:48,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 15:04:48,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 15:04:48,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 15:04:48,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 15:04:48,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 15:04:48,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:48" (1/1) ... [2021-11-23 15:04:48,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 15:04:48,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 [2021-11-23 15:04:48,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 15:04:48,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 15:04:48,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 15:04:48,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 15:04:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 15:04:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 15:04:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 15:04:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 15:04:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 15:04:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 15:04:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 15:04:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 15:04:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 15:04:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 15:04:48,823 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 15:04:48,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 15:04:48,849 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 15:04:48,855 INFO L158 Benchmark]: Toolchain (without parser) took 916.90ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 47.9MB in the end (delta: -13.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-11-23 15:04:48,856 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 37.9MB in the beginning and 37.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 15:04:48,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.62ms. Allocated memory is still 58.7MB. Free memory was 34.2MB in the beginning and 32.8MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 15:04:48,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.13ms. Allocated memory is still 58.7MB. Free memory was 32.7MB in the beginning and 30.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:04:48,859 INFO L158 Benchmark]: Boogie Preprocessor took 55.28ms. Allocated memory is still 58.7MB. Free memory was 30.4MB in the beginning and 28.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 15:04:48,860 INFO L158 Benchmark]: RCFGBuilder took 313.27ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 28.4MB in the beginning and 47.9MB in the end (delta: -19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 15:04:48,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 37.9MB in the beginning and 37.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.62ms. Allocated memory is still 58.7MB. Free memory was 34.2MB in the beginning and 32.8MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.13ms. Allocated memory is still 58.7MB. Free memory was 32.7MB in the beginning and 30.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.28ms. Allocated memory is still 58.7MB. Free memory was 30.4MB in the beginning and 28.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 313.27ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 28.4MB in the beginning and 47.9MB in the end (delta: -19.5MB). Peak memory consumption was 8.4MB. 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 15:04:48,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4201ea6a-0fc0-4968-8f4e-d88b443e6a84/bin/ukojak-CwSLpZB5Qu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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