./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/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_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB --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 --- [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 16:40:52,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 16:40:52,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 16:40:52,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 16:40:52,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 16:40:52,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 16:40:52,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 16:40:52,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 16:40:52,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 16:40:52,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 16:40:52,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 16:40:52,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 16:40:52,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 16:40:52,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 16:40:52,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 16:40:52,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 16:40:52,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 16:40:52,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 16:40:52,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 16:40:52,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 16:40:52,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 16:40:52,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 16:40:52,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 16:40:52,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 16:40:52,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 16:40:52,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 16:40:52,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 16:40:52,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 16:40:52,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 16:40:52,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 16:40:52,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 16:40:52,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 16:40:52,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 16:40:52,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 16:40:52,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 16:40:52,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 16:40:52,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 16:40:52,157 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 16:40:52,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 16:40:52,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 16:40:52,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 16:40:52,161 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-10-17 16:40:52,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 16:40:52,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 16:40:52,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 16:40:52,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 16:40:52,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 16:40:52,206 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 16:40:52,206 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 16:40:52,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 16:40:52,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 16:40:52,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 16:40:52,208 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 16:40:52,208 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 16:40:52,208 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 16:40:52,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 16:40:52,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 16:40:52,209 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 16:40:52,209 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 16:40:52,210 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 16:40:52,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 16:40:52,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:40:52,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 16:40:52,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 16:40:52,211 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 16:40:52,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 16:40:52,211 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_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ece22aa46ab9b41e175a6e56e33a82bfcb1631b8b1756982ada9cc721520a85e [2022-10-17 16:40:52,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 16:40:52,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 16:40:52,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 16:40:52,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 16:40:52,531 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 16:40:52,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/heap-manipulation/tree-1.i [2022-10-17 16:40:52,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/data/813942151/e69edc3d8be941f795576e8addcc426a/FLAG00e9eb0be [2022-10-17 16:40:53,246 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 16:40:53,252 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/sv-benchmarks/c/heap-manipulation/tree-1.i [2022-10-17 16:40:53,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/data/813942151/e69edc3d8be941f795576e8addcc426a/FLAG00e9eb0be [2022-10-17 16:40:53,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/data/813942151/e69edc3d8be941f795576e8addcc426a [2022-10-17 16:40:53,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 16:40:53,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 16:40:53,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 16:40:53,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 16:40:53,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 16:40:53,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:40:53" (1/1) ... [2022-10-17 16:40:53,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39eb131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:53, skipping insertion in model container [2022-10-17 16:40:53,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 04:40:53" (1/1) ... [2022-10-17 16:40:53,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 16:40:53,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 16:40:53,966 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_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/sv-benchmarks/c/heap-manipulation/tree-1.i[22626,22639] [2022-10-17 16:40:54,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:40:54,019 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 16:40:54,048 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_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/sv-benchmarks/c/heap-manipulation/tree-1.i[22626,22639] [2022-10-17 16:40:54,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 16:40:54,093 INFO L208 MainTranslator]: Completed translation [2022-10-17 16:40:54,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54 WrapperNode [2022-10-17 16:40:54,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 16:40:54,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 16:40:54,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 16:40:54,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 16:40:54,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,151 INFO L138 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 165 [2022-10-17 16:40:54,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 16:40:54,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 16:40:54,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 16:40:54,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 16:40:54,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,192 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 16:40:54,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 16:40:54,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 16:40:54,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 16:40:54,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 04:40:54" (1/1) ... [2022-10-17 16:40:54,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 16:40:54,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 16:40:54,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 16:40:54,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 16:40:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 16:40:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 16:40:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 16:40:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 16:40:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 16:40:54,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 16:40:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 16:40:54,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 16:40:54,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 16:40:54,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 16:40:54,448 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 16:40:54,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 16:40:55,083 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 16:40:55,170 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 16:40:55,170 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 16:40:55,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:40:55 BoogieIcfgContainer [2022-10-17 16:40:55,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 16:40:55,174 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 16:40:55,175 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 16:40:55,186 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 16:40:55,186 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:40:55" (1/1) ... [2022-10-17 16:40:55,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 16:40:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:40:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 129 states and 149 transitions. [2022-10-17 16:40:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2022-10-17 16:40:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 16:40:55,258 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:40:55,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:40:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 16:40:55,378 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 16:40:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 16:40:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 129 states and 148 transitions. [2022-10-17 16:40:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 148 transitions. [2022-10-17 16:40:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 16:40:55,398 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 16:40:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 16:40:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:55,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:40:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:55,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 16:40:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 16:40:55,474 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2022-10-17 16:40:55,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 04:40:55 ImpRootNode [2022-10-17 16:40:55,498 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 16:40:55,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 16:40:55,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 16:40:55,499 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 16:40:55,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 04:40:55" (3/4) ... [2022-10-17 16:40:55,501 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 16:40:55,534 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 16:40:55,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 16:40:55,535 INFO L158 Benchmark]: Toolchain (without parser) took 2055.32ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 55.7MB in the beginning and 53.6MB in the end (delta: 2.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,536 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 83.9MB. Free memory was 51.7MB in the beginning and 51.6MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 16:40:55,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.49ms. Allocated memory is still 83.9MB. Free memory was 55.4MB in the beginning and 48.9MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.09ms. Allocated memory is still 83.9MB. Free memory was 48.9MB in the beginning and 46.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,538 INFO L158 Benchmark]: Boogie Preprocessor took 55.45ms. Allocated memory is still 83.9MB. Free memory was 46.3MB in the beginning and 44.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,539 INFO L158 Benchmark]: RCFGBuilder took 964.97ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 44.3MB in the beginning and 70.3MB in the end (delta: -26.1MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,540 INFO L158 Benchmark]: CodeCheck took 323.40ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 55.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,541 INFO L158 Benchmark]: Witness Printer took 35.55ms. Allocated memory is still 107.0MB. Free memory was 55.1MB in the beginning and 53.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 16:40:55,544 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: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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: -1]: 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 0.65ms. Allocated memory is still 83.9MB. Free memory was 51.7MB in the beginning and 51.6MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.49ms. Allocated memory is still 83.9MB. Free memory was 55.4MB in the beginning and 48.9MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.09ms. Allocated memory is still 83.9MB. Free memory was 48.9MB in the beginning and 46.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.45ms. Allocated memory is still 83.9MB. Free memory was 46.3MB in the beginning and 44.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 964.97ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 44.3MB in the beginning and 70.3MB in the end (delta: -26.1MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * CodeCheck took 323.40ms. Allocated memory is still 107.0MB. Free memory was 70.3MB in the beginning and 55.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 35.55ms. Allocated memory is still 107.0MB. Free memory was 55.1MB in the beginning and 53.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 16:40:55,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce8d9ab-e9ec-4d62-b939-7c5f63612f80/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(valid-deref)