./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 16:37:45,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:37:45,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:37:45,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:37:45,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:37:45,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:37:45,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:37:45,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:37:45,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:37:45,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:37:45,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:37:45,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:37:45,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:37:45,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:37:45,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:37:45,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:37:45,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:37:45,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:37:45,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:37:45,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:37:45,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:37:45,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:37:45,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:37:45,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:37:45,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:37:45,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:37:45,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:37:45,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:37:45,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:37:45,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:37:45,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:37:45,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:37:45,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:37:45,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:37:45,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:37:45,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:37:45,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:37:45,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:37:45,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:37:45,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:37:45,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:37:45,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:37:45,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:37:45,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:37:45,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:37:45,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:37:45,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:37:45,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:37:45,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:37:45,760 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:37:45,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:37:45,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:37:45,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:37:45,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:37:45,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:37:45,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:37:45,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:37:45,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:37:45,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:37:45,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:37:45,764 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:37:45,764 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:37:45,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:37:45,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:37:45,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:37:45,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:37:45,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:37:45,766 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:37:45,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:37:45,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:37:45,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 [2022-10-17 16:37:46,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:37:46,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:37:46,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:37:46,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:37:46,123 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:37:46,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2022-10-17 16:37:46,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/data/4ec38809e/e116900f7fbb4253b9d4d339bae74a13/FLAGba280fefa [2022-10-17 16:37:46,776 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:37:46,777 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2022-10-17 16:37:46,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/data/4ec38809e/e116900f7fbb4253b9d4d339bae74a13/FLAGba280fefa [2022-10-17 16:37:47,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/data/4ec38809e/e116900f7fbb4253b9d4d339bae74a13 [2022-10-17 16:37:47,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:37:47,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:37:47,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:37:47,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:37:47,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:37:47,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c771109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47, skipping insertion in model container [2022-10-17 16:37:47,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:37:47,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:37:47,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2022-10-17 16:37:47,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:37:47,544 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:37:47,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2022-10-17 16:37:47,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:37:47,621 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:37:47,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47 WrapperNode [2022-10-17 16:37:47,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:37:47,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:37:47,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:37:47,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:37:47,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,720 INFO L138 Inliner]: procedures = 126, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 174 [2022-10-17 16:37:47,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:37:47,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:37:47,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:37:47,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:37:47,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,778 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:37:47,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:37:47,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:37:47,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:37:47,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:37:47" (1/1) ... [2022-10-17 16:37:47,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:37:47,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:37:47,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:37:47,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:37:47,901 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-10-17 16:37:47,901 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-10-17 16:37:47,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:37:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:37:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:37:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:37:47,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 16:37:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 16:37:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:37:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:37:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:37:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:37:48,058 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:37:48,061 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:37:48,155 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-10-17 16:37:48,492 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:37:48,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:37:48,611 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 16:37:48,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:37:48 BoogieIcfgContainer [2022-10-17 16:37:48,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:37:48,614 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:37:48,614 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:37:48,633 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:37:48,633 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:37:48" (1/1) ... [2022-10-17 16:37:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:37:48,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 30 states and 43 transitions. [2022-10-17 16:37:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2022-10-17 16:37:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 16:37:48,725 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:37:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 30 states and 41 transitions. [2022-10-17 16:37:48,986 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-10-17 16:37:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 16:37:48,987 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:37:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 35 states and 50 transitions. [2022-10-17 16:37:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2022-10-17 16:37:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 16:37:49,416 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:37:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 16:37:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:37:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 39 states and 59 transitions. [2022-10-17 16:37:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 59 transitions. [2022-10-17 16:37:50,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 16:37:50,271 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:37:50,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:37:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:50,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:37:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:50,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:37:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:37:50,479 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-10-17 16:37:50,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:37:50 ImpRootNode [2022-10-17 16:37:50,507 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:37:50,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:37:50,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:37:50,508 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:37:50,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:37:48" (3/4) ... [2022-10-17 16:37:50,511 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:37:50,568 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:37:50,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:37:50,570 INFO L158 Benchmark]: Toolchain (without parser) took 3503.17ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 68.3MB in the beginning and 106.5MB in the end (delta: -38.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,570 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 85.7MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:37:50,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.04ms. Allocated memory is still 109.1MB. Free memory was 68.1MB in the beginning and 76.6MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.89ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 74.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,573 INFO L158 Benchmark]: Boogie Preprocessor took 62.86ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,574 INFO L158 Benchmark]: RCFGBuilder took 828.59ms. Allocated memory is still 109.1MB. Free memory was 71.8MB in the beginning and 41.0MB in the end (delta: 30.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,575 INFO L158 Benchmark]: CodeCheck took 1893.28ms. Allocated memory is still 109.1MB. Free memory was 40.7MB in the beginning and 35.6MB in the end (delta: 5.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,576 INFO L158 Benchmark]: Witness Printer took 60.44ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 35.6MB in the beginning and 106.5MB in the end (delta: -70.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 16:37:50,580 INFO L339 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, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 44 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L596] List a = (List) malloc(sizeof(struct node)); [L597] COND FALSE !(a == 0) VAL [a={-2:0}] [L598] List t; [L599] List p = a; [L600] a->h = 2 VAL [a={-2:0}, p={-2:0}] [L601] COND TRUE __VERIFIER_nondet_int() [L602] p->h = 1 [L603] t = (List) malloc(sizeof(struct node)) [L604] COND FALSE !(t == 0) VAL [a={-2:0}, p={-2:0}, t={-1:0}] [L605] p->n = t [L606] EXPR p->n [L606] p = p->n [L601] COND FALSE !(__VERIFIER_nondet_int()) [L608] p->h = 2 [L609] p->n = 0 [L610] p = a VAL [a={-2:0}, p={-2:0}, t={-1:0}] [L611] COND TRUE p!=0 [L612] EXPR p->h VAL [a={-2:0}, p={-2:0}, p->h=1, t={-1:0}] [L612] COND TRUE p->h != 2 [L613] reach_error() VAL [a={-2:0}, p={-2:0}, t={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 85.7MB in the end (delta: 74.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.04ms. Allocated memory is still 109.1MB. Free memory was 68.1MB in the beginning and 76.6MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.89ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 74.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.86ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 72.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 828.59ms. Allocated memory is still 109.1MB. Free memory was 71.8MB in the beginning and 41.0MB in the end (delta: 30.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * CodeCheck took 1893.28ms. Allocated memory is still 109.1MB. Free memory was 40.7MB in the beginning and 35.6MB in the end (delta: 5.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 60.44ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 35.6MB in the beginning and 106.5MB in the end (delta: -70.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 16:37:50,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193cdc6e-fd07-4020-a4a1-9129314ae2e7/bin/ukojak-92XMlrwhuB/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