./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.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_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/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_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/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_37b3982e-80bb-42de-a25e-c6e18cb6619c/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 fc03d948b3133d1e09e5b9df570e018433e0831cbe27440ede702c2678003704 --- 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 16:59:35,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:59:35,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:59:35,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:59:35,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:59:35,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:59:35,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:59:35,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:59:35,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:59:35,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:59:35,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:59:35,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:59:35,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:59:35,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:59:35,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:59:35,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:59:35,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:59:35,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:59:35,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:59:35,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:59:35,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:59:35,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:59:35,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:59:35,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:59:35,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:59:35,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:59:35,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:59:35,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:59:35,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:59:35,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:59:35,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:59:35,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:59:35,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:59:35,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:59:35,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:59:35,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:59:35,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:59:35,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:59:35,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:59:35,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:59:35,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:59:35,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-10-17 16:59:35,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:59:35,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:59:35,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 16:59:35,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 16:59:35,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:59:35,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:59:35,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:59:35,786 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:59:35,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:59:35,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:59:35,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:59:35,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 16:59:35,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:59:35,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 16:59:35,787 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:59:35,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 16:59:35,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:59:35,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 16:59:35,788 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:59:35,788 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:59:35,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:59:35,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:59:35,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:59:35,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:59:35,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 16:59:35,790 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:59:35,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:59:35,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 16:59:35,790 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_37b3982e-80bb-42de-a25e-c6e18cb6619c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc03d948b3133d1e09e5b9df570e018433e0831cbe27440ede702c2678003704 [2022-10-17 16:59:36,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:59:36,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:59:36,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:59:36,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:59:36,086 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:59:36,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2022-10-17 16:59:36,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/data/560171879/199f505d681a403cb218a425ce454461/FLAGed0b82345 [2022-10-17 16:59:36,794 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:59:36,796 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i [2022-10-17 16:59:36,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/data/560171879/199f505d681a403cb218a425ce454461/FLAGed0b82345 [2022-10-17 16:59:37,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/data/560171879/199f505d681a403cb218a425ce454461 [2022-10-17 16:59:37,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:59:37,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:59:37,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:59:37,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:59:37,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:59:37,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51da6ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37, skipping insertion in model container [2022-10-17 16:59:37,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:59:37,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:59:37,572 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_37b3982e-80bb-42de-a25e-c6e18cb6619c/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2022-10-17 16:59:37,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:59:37,603 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:59:37,678 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_37b3982e-80bb-42de-a25e-c6e18cb6619c/sv-benchmarks/c/forester-heap/sll-simple-white-blue-2.i[22617,22630] [2022-10-17 16:59:37,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:59:37,731 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:59:37,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37 WrapperNode [2022-10-17 16:59:37,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:59:37,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:59:37,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:59:37,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:59:37,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,805 INFO L138 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2022-10-17 16:59:37,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:59:37,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:59:37,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:59:37,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:59:37,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:59:37,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:59:37,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:59:37,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:59:37,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:59:37" (1/1) ... [2022-10-17 16:59:37,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:59:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:59:37,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:59:37,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:59:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:59:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:59:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:59:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:59:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 16:59:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 16:59:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:59:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:59:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:59:37,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:59:38,081 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:59:38,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:59:38,473 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:59:38,523 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:59:38,529 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-10-17 16:59:38,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:59:38 BoogieIcfgContainer [2022-10-17 16:59:38,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:59:38,535 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:59:38,536 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:59:38,547 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:59:38,548 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:59:38" (1/1) ... [2022-10-17 16:59:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:59:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:59:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 33 transitions. [2022-10-17 16:59:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2022-10-17 16:59:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 16:59:38,656 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:59:38,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:59:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:59:38,948 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 16:59:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:59:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2022-10-17 16:59:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2022-10-17 16:59:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 16:59:38,994 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:59:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:59:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:59:39,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:59:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:59:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:59:39,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:59:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:59:39,313 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2022-10-17 16:59:39,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:59:39 ImpRootNode [2022-10-17 16:59:39,349 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:59:39,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:59:39,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:59:39,350 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:59:39,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:59:38" (3/4) ... [2022-10-17 16:59:39,354 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:59:39,402 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:59:39,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:59:39,404 INFO L158 Benchmark]: Toolchain (without parser) took 2341.16ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.4MB in the beginning and 81.1MB in the end (delta: -14.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-10-17 16:59:39,405 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:59:39,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.85ms. Allocated memory is still 104.9MB. Free memory was 66.1MB in the beginning and 70.6MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 16:59:39,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.54ms. Allocated memory is still 104.9MB. Free memory was 70.6MB in the beginning and 68.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:59:39,408 INFO L158 Benchmark]: Boogie Preprocessor took 40.02ms. Allocated memory is still 104.9MB. Free memory was 68.5MB in the beginning and 66.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:59:39,408 INFO L158 Benchmark]: RCFGBuilder took 684.91ms. Allocated memory is still 104.9MB. Free memory was 66.8MB in the beginning and 49.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 16:59:39,409 INFO L158 Benchmark]: CodeCheck took 813.59ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 49.4MB in the beginning and 83.2MB in the end (delta: -33.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:59:39,410 INFO L158 Benchmark]: Witness Printer took 53.36ms. Allocated memory is still 125.8MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:59:39,414 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 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 17 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 71 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, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: 1053]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L999] SLL* head = malloc(sizeof(SLL)); [L1000] head->next = ((void*)0) [L1001] head->data = 0 [L1003] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND TRUE __VERIFIER_nondet_int() [L1017] x = malloc(sizeof(SLL)) [L1018] x->data = 1 [L1019] x->next = head [L1020] head = x VAL [head={-2:0}, x={-2:0}] [L1040] x = head VAL [head={-2:0}, x={-2:0}] [L1043] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=1] [L1043] COND FALSE !(x->data != 1) [L1049] EXPR x->next [L1049] x = x->next [L1050] COND TRUE \read(*x) [L1052] EXPR x->data VAL [head={-2:0}, x={-1:0}, x->data=0] [L1052] COND TRUE x->data != 1 [L1053] reach_error() VAL [head={-2:0}, x={-1:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.85ms. Allocated memory is still 104.9MB. Free memory was 66.1MB in the beginning and 70.6MB in the end (delta: -4.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.54ms. Allocated memory is still 104.9MB. Free memory was 70.6MB in the beginning and 68.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.02ms. Allocated memory is still 104.9MB. Free memory was 68.5MB in the beginning and 66.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.91ms. Allocated memory is still 104.9MB. Free memory was 66.8MB in the beginning and 49.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 813.59ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 49.4MB in the beginning and 83.2MB in the end (delta: -33.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 53.36ms. Allocated memory is still 125.8MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 16:59:39,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b3982e-80bb-42de-a25e-c6e18cb6619c/bin/ukojak-92XMlrwhuB/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