./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/recursive_list.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_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-regression/recursive_list.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3 --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 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-25 03:56:04,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 03:56:04,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-25 03:56:04,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 03:56:04,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 03:56:04,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 03:56:04,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-25 03:56:04,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-25 03:56:04,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 03:56:04,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 03:56:04,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 03:56:04,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-25 03:56:04,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 03:56:04,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-25 03:56:04,896 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 03:56:04,897 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 03:56:04,897 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 03:56:04,897 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 03:56:04,897 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 03:56:04,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 03:56:04,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 03:56:04,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 03:56:04,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 03:56:04,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-25 03:56:04,898 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 03:56:04,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 03:56:04,902 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_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3 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 -> 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 [2024-11-25 03:56:05,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 03:56:05,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 03:56:05,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 03:56:05,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 03:56:05,317 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 03:56:05,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/ldv-regression/recursive_list.i [2024-11-25 03:56:08,691 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/data/efc6277da/a5ca3a0813f74e0a805981c4ddf382a8/FLAGa2659f9cb [2024-11-25 03:56:08,999 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 03:56:09,000 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/sv-benchmarks/c/ldv-regression/recursive_list.i [2024-11-25 03:56:09,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/data/efc6277da/a5ca3a0813f74e0a805981c4ddf382a8/FLAGa2659f9cb [2024-11-25 03:56:09,039 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/data/efc6277da/a5ca3a0813f74e0a805981c4ddf382a8 [2024-11-25 03:56:09,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 03:56:09,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 03:56:09,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 03:56:09,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 03:56:09,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 03:56:09,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59599e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09, skipping insertion in model container [2024-11-25 03:56:09,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,067 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 03:56:09,233 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_70edcace-d6e2-4970-855f-fed42e24ee39/sv-benchmarks/c/ldv-regression/recursive_list.i[409,422] [2024-11-25 03:56:09,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 03:56:09,275 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 03:56:09,287 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_70edcace-d6e2-4970-855f-fed42e24ee39/sv-benchmarks/c/ldv-regression/recursive_list.i[409,422] [2024-11-25 03:56:09,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 03:56:09,321 INFO L204 MainTranslator]: Completed translation [2024-11-25 03:56:09,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09 WrapperNode [2024-11-25 03:56:09,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 03:56:09,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 03:56:09,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 03:56:09,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 03:56:09,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,351 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2024-11-25 03:56:09,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 03:56:09,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 03:56:09,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 03:56:09,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 03:56:09,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,369 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 03:56:09,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 03:56:09,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 03:56:09,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 03:56:09,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 03:56:09,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 03:56:09,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 03:56:09,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 03:56:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-25 03:56:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-25 03:56:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-25 03:56:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-25 03:56:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-25 03:56:09,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-25 03:56:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-25 03:56:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 03:56:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 03:56:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-25 03:56:09,454 INFO L130 BoogieDeclarations]: Found specification of procedure append [2024-11-25 03:56:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2024-11-25 03:56:09,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 03:56:09,553 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 03:56:09,555 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 03:56:09,712 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-25 03:56:09,712 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 03:56:09,792 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 03:56:09,792 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-25 03:56:09,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:56:09 BoogieIcfgContainer [2024-11-25 03:56:09,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 03:56:09,794 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 03:56:09,794 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 03:56:09,809 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 03:56:09,809 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:56:09" (1/1) ... [2024-11-25 03:56:09,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 03:56:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 03:56:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2024-11-25 03:56:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-25 03:56:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-25 03:56:09,910 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 03:56:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 03:56:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:56:10,140 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 03:56:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:56:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:56:10,404 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 03:56:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 03:56:10,491 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2024-11-25 03:56:10,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 03:56:10 ImpRootNode [2024-11-25 03:56:10,529 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 03:56:10,529 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 03:56:10,530 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 03:56:10,530 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 03:56:10,531 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:56:09" (3/4) ... [2024-11-25 03:56:10,532 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 03:56:10,589 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 11. [2024-11-25 03:56:10,650 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 03:56:10,652 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 03:56:10,653 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 03:56:10,654 INFO L158 Benchmark]: Toolchain (without parser) took 1610.30ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 38.5MB in the end (delta: 55.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-25 03:56:10,654 INFO L158 Benchmark]: CDTParser took 4.81ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:56:10,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.74ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 82.6MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 03:56:10,658 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.09ms. Allocated memory is still 117.4MB. Free memory was 82.6MB in the beginning and 81.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:56:10,658 INFO L158 Benchmark]: Boogie Preprocessor took 23.61ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:56:10,658 INFO L158 Benchmark]: RCFGBuilder took 416.25ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 67.2MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 03:56:10,659 INFO L158 Benchmark]: CodeCheck took 735.14ms. Allocated memory is still 117.4MB. Free memory was 67.2MB in the beginning and 42.8MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-25 03:56:10,659 INFO L158 Benchmark]: Witness Printer took 123.31ms. Allocated memory is still 117.4MB. Free memory was 42.8MB in the beginning and 38.5MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 03:56:10,661 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 2 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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: 10]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int i = 1; [L39] struct list *l,m; [L40] l = &m [L41] l->next = 0 [L42] l->n = 0 VAL [i=1, l={26982:0}] [L44] CALL, EXPR append(l, 1) VAL [i=1] [L27] struct list *new_el; [L29] CALL, EXPR allocate_memory() [L22] return malloc(8U); [L29] RET, EXPR allocate_memory() [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; [L44] RET, EXPR append(l, 1) VAL [i=1, l={26982:0}] [L44] l = append(l, 1) [L45] CALL, EXPR append(l, 2) VAL [i=1] [L27] struct list *new_el; [L29] CALL, EXPR allocate_memory() [L22] return malloc(8U); [L29] RET, EXPR allocate_memory() [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; [L45] RET, EXPR append(l, 2) VAL [i=1, l={-2:0}] [L45] l = append(l, 2) [L50] EXPR l->next [L50] EXPR l->next->next [L50] EXPR l->next->next->n VAL [i=1, l={-2:0}] [L50] COND TRUE l->next->next->n == 0 [L50] CALL err() [L10] reach_error() VAL [i=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.81ms. Allocated memory is still 167.8MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.74ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 82.6MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.09ms. Allocated memory is still 117.4MB. Free memory was 82.6MB in the beginning and 81.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.61ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.25ms. Allocated memory is still 117.4MB. Free memory was 80.4MB in the beginning and 67.2MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 735.14ms. Allocated memory is still 117.4MB. Free memory was 67.2MB in the beginning and 42.8MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 123.31ms. Allocated memory is still 117.4MB. Free memory was 42.8MB in the beginning and 38.5MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-25 03:56:10,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70edcace-d6e2-4970-855f-fed42e24ee39/bin/ukojak-verify-ENZ3QT5qd3/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