./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 23:15:19,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 23:15:19,545 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-05 23:15:19,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 23:15:19,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 23:15:19,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 23:15:19,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 23:15:19,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 23:15:19,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 23:15:19,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 23:15:19,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 23:15:19,568 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 23:15:19,568 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:15:19,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 23:15:19,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 23:15:19,569 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 23:15:19,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 23:15:19,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 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 -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2024-12-05 23:15:19,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:15:19,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:15:19,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:15:19,777 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:15:19,777 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:15:19,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2024-12-05 23:15:22,356 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/data/7a52d3b3c/b1969fee6732445dbcf68841162af853/FLAG3b61d0d44 [2024-12-05 23:15:22,597 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:15:22,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2024-12-05 23:15:22,607 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/data/7a52d3b3c/b1969fee6732445dbcf68841162af853/FLAG3b61d0d44 [2024-12-05 23:15:22,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/data/7a52d3b3c/b1969fee6732445dbcf68841162af853 [2024-12-05 23:15:22,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:15:22,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:15:22,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:15:22,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:15:22,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:15:22,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:15:22" (1/1) ... [2024-12-05 23:15:22,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2473ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:22, skipping insertion in model container [2024-12-05 23:15:22,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:15:22" (1/1) ... [2024-12-05 23:15:22,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:15:23,169 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2024-12-05 23:15:23,172 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2024-12-05 23:15:23,173 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2024-12-05 23:15:23,174 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2024-12-05 23:15:23,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:15:23,184 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:15:23,219 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2024-12-05 23:15:23,219 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2024-12-05 23:15:23,221 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2024-12-05 23:15:23,221 WARN L250 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_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2024-12-05 23:15:23,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:15:23,242 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:15:23,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23 WrapperNode [2024-12-05 23:15:23,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:15:23,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:15:23,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:15:23,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:15:23,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,273 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2024-12-05 23:15:23,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:15:23,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:15:23,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:15:23,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:15:23,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,288 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,289 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,294 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:15:23,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:15:23,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:15:23,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:15:23,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:15:23,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:15:23,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:15:23,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 23:15:23,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:15:23,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:15:23,428 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:15:23,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:15:23,604 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-12-05 23:15:23,605 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:15:23,667 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:15:23,667 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-12-05 23:15:23,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:15:23 BoogieIcfgContainer [2024-12-05 23:15:23,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:15:23,668 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:15:23,668 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:15:23,675 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:15:23,675 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:15:23" (1/1) ... [2024-12-05 23:15:23,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:15:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 27 states and 43 transitions. [2024-12-05 23:15:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 43 transitions. [2024-12-05 23:15:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-05 23:15:23,731 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2024-12-05 23:15:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2024-12-05 23:15:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-05 23:15:23,924 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:24,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2024-12-05 23:15:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2024-12-05 23:15:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-05 23:15:24,179 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:24,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 32 states and 43 transitions. [2024-12-05 23:15:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2024-12-05 23:15:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-05 23:15:24,662 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 34 states and 48 transitions. [2024-12-05 23:15:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2024-12-05 23:15:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-05 23:15:25,518 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:26,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2024-12-05 23:15:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2024-12-05 23:15:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-05 23:15:26,987 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:26,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2024-12-05 23:15:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-12-05 23:15:27,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 23:15:27,279 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:27,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 37 states and 51 transitions. [2024-12-05 23:15:28,861 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2024-12-05 23:15:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 23:15:28,861 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 51 states and 82 transitions. [2024-12-05 23:15:34,320 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 82 transitions. [2024-12-05 23:15:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-05 23:15:34,320 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:34,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 23:15:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 52 states and 83 transitions. [2024-12-05 23:15:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 83 transitions. [2024-12-05 23:15:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-05 23:15:34,819 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:34,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:43,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 67 states and 121 transitions. [2024-12-05 23:15:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 121 transitions. [2024-12-05 23:15:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-05 23:15:43,006 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:43,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:45,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:15:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:15:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 80 states and 154 transitions. [2024-12-05 23:15:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 154 transitions. [2024-12-05 23:15:52,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-05 23:15:52,862 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:15:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:15:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:15:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:16:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:16:00,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 85 states and 174 transitions. [2024-12-05 23:16:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 174 transitions. [2024-12-05 23:16:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-05 23:16:00,299 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:16:00,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:16:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:16:00,334 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:16:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:16:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:16:00,741 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:16:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:16:00,847 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2024-12-05 23:16:00,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:16:00 ImpRootNode [2024-12-05 23:16:00,872 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:16:00,873 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:16:00,873 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:16:00,873 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:16:00,874 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:15:23" (3/4) ... [2024-12-05 23:16:00,875 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-05 23:16:00,917 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 15. [2024-12-05 23:16:00,959 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 23:16:00,959 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 23:16:00,959 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:16:00,960 INFO L158 Benchmark]: Toolchain (without parser) took 38012.63ms. Allocated memory was 117.4MB in the beginning and 302.0MB in the end (delta: 184.5MB). Free memory was 92.0MB in the beginning and 234.7MB in the end (delta: -142.7MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2024-12-05 23:16:00,960 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:16:00,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.08ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 74.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:16:00,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.37ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:16:00,961 INFO L158 Benchmark]: Boogie Preprocessor took 23.33ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 71.3MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:16:00,962 INFO L158 Benchmark]: RCFGBuilder took 370.45ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 51.3MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:16:00,962 INFO L158 Benchmark]: CodeCheck took 37203.99ms. Allocated memory was 117.4MB in the beginning and 302.0MB in the end (delta: 184.5MB). Free memory was 51.0MB in the beginning and 240.0MB in the end (delta: -188.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:16:00,962 INFO L158 Benchmark]: Witness Printer took 86.45ms. Allocated memory is still 302.0MB. Free memory was 240.0MB in the beginning and 234.7MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:16:00,964 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 27 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 37.2s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 948 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 542 mSDsluCounter, 928 SdHoareTripleChecker+Invalid, 9.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 747 mSDsCounter, 377 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1902 IncrementalHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 377 mSolverCounterUnsat, 181 mSDtfsCounter, 1902 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1781 GetRequests, 1437 SyntacticMatches, 48 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37251 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 3948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 7/47 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 1050]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1005] SLL* null = malloc(sizeof(SLL)); [L1006] null->colour = BLACK [L1007] null->next = ((void*)0) [L1009] SLL* list = malloc(sizeof(SLL)); [L1010] list->next = null [L1011] list->colour = BLACK [L1013] SLL* end = list; VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1016] COND TRUE __VERIFIER_nondet_int() [L1019] end->next = malloc(sizeof(SLL)) [L1020] EXPR end->next [L1020] end = end->next [L1021] end->next = null [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1029] end->colour = RED [L1030] end->next = malloc(sizeof(SLL)) [L1031] EXPR end->next [L1031] end = end->next [L1032] end->next = null [L1033] end->colour = BLACK VAL [end={1285:0}, list={-3:0}, null={-2:0}] [L1016] COND FALSE !(__VERIFIER_nondet_int()) [L1037] end = null [L1038] end = list VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1041] COND FALSE !(!(null != end)) VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1041] COND FALSE !(0) VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1042] EXPR end->colour VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1042] COND FALSE !(!(BLACK == end->colour)) [L1042] COND FALSE !(0) VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1044] COND TRUE null != end [L1046] EXPR end->colour VAL [end={-3:0}, list={-3:0}, null={-2:0}] [L1046] COND FALSE !(RED == end->colour) [L1053] EXPR end->next [L1053] end = end->next [L1044] COND TRUE null != end [L1046] EXPR end->colour VAL [end={-1:0}, list={-3:0}, null={-2:0}] [L1046] COND TRUE RED == end->colour [L1048] EXPR end->next [L1048] end = end->next [L1049] COND FALSE !(!(null != end)) VAL [end={1285:0}, list={-3:0}, null={-2:0}] [L1049] COND FALSE !(0) VAL [end={1285:0}, list={-3:0}, null={-2:0}] [L1050] EXPR end->colour VAL [end={1285:0}, list={-3:0}, null={-2:0}] [L1050] COND TRUE !(BLACK != end->colour) [L1050] reach_error() VAL [end={1285:0}, list={-3:0}, null={-2:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.08ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 74.5MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.37ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 72.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.33ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 71.3MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 370.45ms. Allocated memory is still 117.4MB. Free memory was 71.3MB in the beginning and 51.3MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 37203.99ms. Allocated memory was 117.4MB in the beginning and 302.0MB in the end (delta: 184.5MB). Free memory was 51.0MB in the beginning and 240.0MB in the end (delta: -188.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 86.45ms. Allocated memory is still 302.0MB. Free memory was 240.0MB in the beginning and 234.7MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-05 23:16:00,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6af02c02-e0d5-4fe6-b3ce-6f5a376b37f0/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE