./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ece22aa46ab9b41e175a6e56e33a82bfcb1631b8b1756982ada9cc721520a85e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:01:42,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:01:42,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:01:42,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:01:42,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:01:42,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:01:42,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:01:42,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:01:42,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:01:42,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:01:42,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:01:42,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:01:42,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:01:42,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:01:42,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:01:42,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:01:42,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:01:42,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:01:42,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:01:42,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:01:42,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:01:42,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:01:42,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:01:42,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:01:42,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:01:42,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:01:42,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:01:42,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:01:42,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:01:42,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:01:42,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:01:42,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:01:42,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:01:42,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:01:42,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:01:42,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:01:42,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:01:42,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:01:42,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:01:42,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:01:42,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:01:42,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 01:01:42,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:01:42,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:01:42,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:01:42,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:01:42,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:01:42,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:01:42,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:01:42,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:01:42,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:01:42,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:01:42,853 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:01:42,853 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:01:42,853 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:01:42,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:01:42,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:01:42,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:01:42,854 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:01:42,854 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:01:42,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:01:42,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:01:42,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:01:42,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:01:42,856 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:01:42,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:01:42,856 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_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ece22aa46ab9b41e175a6e56e33a82bfcb1631b8b1756982ada9cc721520a85e [2021-11-23 01:01:43,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:01:43,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:01:43,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:01:43,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:01:43,232 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:01:43,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2021-11-23 01:01:43,326 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/data/1b70aa80c/0c05be59267d485d8fa520ac932df90b/FLAG9b02bb6d8 [2021-11-23 01:01:43,921 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:01:43,922 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/sv-benchmarks/c/heap-manipulation/tree-1.i [2021-11-23 01:01:43,935 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/data/1b70aa80c/0c05be59267d485d8fa520ac932df90b/FLAG9b02bb6d8 [2021-11-23 01:01:44,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/data/1b70aa80c/0c05be59267d485d8fa520ac932df90b [2021-11-23 01:01:44,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:01:44,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:01:44,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:01:44,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:01:44,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:01:44,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2753fce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44, skipping insertion in model container [2021-11-23 01:01:44,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:01:44,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:01:44,642 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_00ce80cc-6133-4fe3-9f90-a016a3b87569/sv-benchmarks/c/heap-manipulation/tree-1.i[22626,22639] [2021-11-23 01:01:44,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:01:44,700 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:01:44,747 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_00ce80cc-6133-4fe3-9f90-a016a3b87569/sv-benchmarks/c/heap-manipulation/tree-1.i[22626,22639] [2021-11-23 01:01:44,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:01:44,812 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:01:44,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44 WrapperNode [2021-11-23 01:01:44,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:01:44,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:01:44,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:01:44,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:01:44,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,877 INFO L137 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 165 [2021-11-23 01:01:44,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:01:44,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:01:44,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:01:44,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:01:44,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:01:44,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:01:44,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:01:44,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:01:44,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:01:44" (1/1) ... [2021-11-23 01:01:44,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:01:44,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:01:44,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:01:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:01:45,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 01:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 01:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:01:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:01:45,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:01:45,128 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:01:45,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:01:45,736 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:01:45,843 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:01:45,845 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 01:01:45,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:01:45 BoogieIcfgContainer [2021-11-23 01:01:45,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:01:45,849 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:01:45,849 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:01:45,861 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:01:45,861 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:01:45" (1/1) ... [2021-11-23 01:01:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:01:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:01:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 129 states and 149 transitions. [2021-11-23 01:01:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2021-11-23 01:01:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 01:01:45,974 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:01:45,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:01:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:01:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:01:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:01:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 129 states and 148 transitions. [2021-11-23 01:01:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2021-11-23 01:01:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 01:01:46,140 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:01:46,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:01:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:01:46,161 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:01:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:01:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:01:46,232 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:01:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:01:46,253 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-11-23 01:01:46,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:01:46 ImpRootNode [2021-11-23 01:01:46,284 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:01:46,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:01:46,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:01:46,285 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:01:46,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:01:45" (3/4) ... [2021-11-23 01:01:46,288 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:01:46,338 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:01:46,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:01:46,341 INFO L158 Benchmark]: Toolchain (without parser) took 2129.76ms. Allocated memory is still 98.6MB. Free memory was 62.4MB in the beginning and 57.1MB in the end (delta: 5.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,342 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 70.2MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:01:46,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.88ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 66.4MB in the end (delta: -4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.85ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 63.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,344 INFO L158 Benchmark]: Boogie Preprocessor took 54.59ms. Allocated memory is still 98.6MB. Free memory was 63.8MB in the beginning and 61.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,349 INFO L158 Benchmark]: RCFGBuilder took 914.45ms. Allocated memory is still 98.6MB. Free memory was 61.9MB in the beginning and 73.4MB in the end (delta: -11.5MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,349 INFO L158 Benchmark]: CodeCheck took 435.15ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 58.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,351 INFO L158 Benchmark]: Witness Printer took 53.50ms. Allocated memory is still 98.6MB. Free memory was 58.7MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:01:46,357 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, 129 locations, 67 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 5 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 2 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: 601]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L633] CALL create_tree() [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); VAL [node={0:0}, nodelast={0:0}] [L587] COND FALSE !(__VERIFIER_nondet_int()) [L601] node->parent = ((void *)0) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 70.2MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.88ms. Allocated memory is still 98.6MB. Free memory was 62.2MB in the beginning and 66.4MB in the end (delta: -4.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.85ms. Allocated memory is still 98.6MB. Free memory was 66.4MB in the beginning and 63.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.59ms. Allocated memory is still 98.6MB. Free memory was 63.8MB in the beginning and 61.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 914.45ms. Allocated memory is still 98.6MB. Free memory was 61.9MB in the beginning and 73.4MB in the end (delta: -11.5MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * CodeCheck took 435.15ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 58.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 53.50ms. Allocated memory is still 98.6MB. Free memory was 58.7MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:01:46,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00ce80cc-6133-4fe3-9f90-a016a3b87569/bin/ukojak-LBtLqBUTdQ/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(valid-deref)