./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-regression/recursive_list.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL --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 0.2.3-dev-9bd2c7f [2023-11-19 03:11:28,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:11:28,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 03:11:28,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:11:28,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:11:28,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:11:28,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:11:28,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:11:28,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:11:28,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:11:28,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:11:28,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:11:28,706 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:11:28,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:11:28,708 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:11:28,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:11:28,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:11:28,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:11:28,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:11:28,710 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:11:28,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:11:28,712 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:11:28,712 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:11:28,713 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:11:28,717 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:11:28,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:11:28,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:11:28,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:11:28,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:11:28,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:11:28,720 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:11:28,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:11:28,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:11:28,721 INFO L153 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_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52c76a7df26fca079cfc43e405f2f619070583ff933a68f0bba20f0a9dce8e14 [2023-11-19 03:11:29,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:11:29,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:11:29,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:11:29,049 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:11:29,049 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:11:29,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/ldv-regression/recursive_list.i [2023-11-19 03:11:32,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:11:32,284 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:11:32,284 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/sv-benchmarks/c/ldv-regression/recursive_list.i [2023-11-19 03:11:32,292 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/data/1d89bb754/19b9a62777c54afe8cc261953c7dc18d/FLAGadba68e71 [2023-11-19 03:11:32,307 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/data/1d89bb754/19b9a62777c54afe8cc261953c7dc18d [2023-11-19 03:11:32,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:11:32,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:11:32,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:11:32,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:11:32,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:11:32,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f08af04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32, skipping insertion in model container [2023-11-19 03:11:32,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:11:32,532 WARN L240 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_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/sv-benchmarks/c/ldv-regression/recursive_list.i[409,422] [2023-11-19 03:11:32,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:11:32,573 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:11:32,588 WARN L240 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_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/sv-benchmarks/c/ldv-regression/recursive_list.i[409,422] [2023-11-19 03:11:32,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:11:32,619 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:11:32,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32 WrapperNode [2023-11-19 03:11:32,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:11:32,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:11:32,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:11:32,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:11:32,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,665 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2023-11-19 03:11:32,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:11:32,667 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:11:32,667 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:11:32,667 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:11:32,676 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:11:32,704 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:11:32,704 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:11:32,704 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:11:32,705 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:11:32" (1/1) ... [2023-11-19 03:11:32,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:11:32,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:11:32,741 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:11:32,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:11:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 03:11:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:11:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:11:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:11:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 03:11:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:11:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 03:11:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:11:32,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:11:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:11:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure append [2023-11-19 03:11:32,784 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2023-11-19 03:11:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:11:32,868 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:11:32,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:11:33,044 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:11:33,085 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:11:33,085 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:11:33,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:33 BoogieIcfgContainer [2023-11-19 03:11:33,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:11:33,092 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:11:33,093 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:11:33,101 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:11:33,101 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:33" (1/1) ... [2023-11-19 03:11:33,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:11:33,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:11:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-11-19 03:11:33,168 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-19 03:11:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 03:11:33,174 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:11:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:11:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:33,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:11:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:33,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:11:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:11:33,805 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:11:33,830 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret6 [2023-11-19 03:11:33,831 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret7 [2023-11-19 03:11:33,832 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-19 03:11:33,834 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-19 03:11:33,835 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-19 03:11:33,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:11:33 ImpRootNode [2023-11-19 03:11:33,840 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:11:33,841 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:11:33,841 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:11:33,841 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:11:33,842 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:11:33" (3/4) ... [2023-11-19 03:11:33,843 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 03:11:33,848 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret6 [2023-11-19 03:11:33,849 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~ret7 [2023-11-19 03:11:33,849 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-19 03:11:33,849 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-19 03:11:33,850 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem8 [2023-11-19 03:11:33,896 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:11:33,896 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:11:33,897 INFO L158 Benchmark]: Toolchain (without parser) took 1586.43ms. Allocated memory is still 144.7MB. Free memory was 110.3MB in the beginning and 52.4MB in the end (delta: 57.9MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2023-11-19 03:11:33,898 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:11:33,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.70ms. Allocated memory is still 144.7MB. Free memory was 109.7MB in the beginning and 99.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:11:33,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.44ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:11:33,900 INFO L158 Benchmark]: Boogie Preprocessor took 36.53ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 96.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:11:33,900 INFO L158 Benchmark]: RCFGBuilder took 386.36ms. Allocated memory is still 144.7MB. Free memory was 96.2MB in the beginning and 82.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:11:33,901 INFO L158 Benchmark]: CodeCheck took 747.56ms. Allocated memory is still 144.7MB. Free memory was 82.4MB in the beginning and 55.2MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 03:11:33,901 INFO L158 Benchmark]: Witness Printer took 55.80ms. Allocated memory is still 144.7MB. Free memory was 55.2MB in the beginning and 52.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:11:33,905 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 - 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={13069:0}, m={13069:0}] [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={13069:0}, m={13069:0}] [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={-1:0}, m={13069:0}] [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}, m={13069:0}] [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 0.21ms. Allocated memory is still 115.3MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.70ms. Allocated memory is still 144.7MB. Free memory was 109.7MB in the beginning and 99.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.44ms. Allocated memory is still 144.7MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.53ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 96.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.36ms. Allocated memory is still 144.7MB. Free memory was 96.2MB in the beginning and 82.4MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 747.56ms. Allocated memory is still 144.7MB. Free memory was 82.4MB in the beginning and 55.2MB in the end (delta: 27.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 55.80ms. Allocated memory is still 144.7MB. Free memory was 55.2MB in the beginning and 52.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret6 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret6 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~ret7 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem8 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 03:11:33,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec6d65e-cc80-4298-8ff8-4b014e3f30a4/bin/ukojak-verify-G8NBE6pJGL/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE