./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ --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 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 --- 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-6b4ec56 [2022-11-20 17:57:30,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 17:57:30,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 17:57:30,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 17:57:30,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 17:57:30,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 17:57:30,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 17:57:30,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 17:57:30,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 17:57:30,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 17:57:30,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 17:57:30,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 17:57:30,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 17:57:30,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 17:57:30,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 17:57:30,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 17:57:30,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 17:57:30,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 17:57:30,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 17:57:30,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 17:57:30,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 17:57:30,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 17:57:30,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 17:57:30,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 17:57:30,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 17:57:30,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 17:57:30,984 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 17:57:30,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 17:57:30,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 17:57:30,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 17:57:30,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 17:57:30,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 17:57:30,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 17:57:30,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 17:57:30,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 17:57:30,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 17:57:30,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 17:57:30,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 17:57:30,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 17:57:31,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 17:57:31,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 17:57:31,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-11-20 17:57:31,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 17:57:31,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 17:57:31,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 17:57:31,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 17:57:31,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 17:57:31,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 17:57:31,072 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 17:57:31,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 17:57:31,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 17:57:31,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 17:57:31,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 17:57:31,074 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 17:57:31,074 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 17:57:31,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 17:57:31,074 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 17:57:31,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 17:57:31,075 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 17:57:31,075 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 17:57:31,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 17:57:31,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:57:31,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 17:57:31,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 17:57:31,076 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 17:57:31,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 17:57:31,076 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_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2022-11-20 17:57:31,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 17:57:31,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 17:57:31,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 17:57:31,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 17:57:31,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 17:57:31,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2022-11-20 17:57:34,428 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 17:57:34,802 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 17:57:34,807 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2022-11-20 17:57:34,825 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/data/b48f093a9/7626871b2e6f4ec4820b85290af8e332/FLAGbdb2bede2 [2022-11-20 17:57:34,844 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/data/b48f093a9/7626871b2e6f4ec4820b85290af8e332 [2022-11-20 17:57:34,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 17:57:34,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 17:57:34,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 17:57:34,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 17:57:34,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 17:57:34,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:57:34" (1/1) ... [2022-11-20 17:57:34,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19d490f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:34, skipping insertion in model container [2022-11-20 17:57:34,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:57:34" (1/1) ... [2022-11-20 17:57:34,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 17:57:34,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 17:57:35,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:57:35,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 17:57:35,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:57:35,278 INFO L208 MainTranslator]: Completed translation [2022-11-20 17:57:35,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35 WrapperNode [2022-11-20 17:57:35,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 17:57:35,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 17:57:35,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 17:57:35,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 17:57:35,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,332 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2022-11-20 17:57:35,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 17:57:35,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 17:57:35,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 17:57:35,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 17:57:35,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 17:57:35,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 17:57:35,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 17:57:35,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 17:57:35,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:35,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:57:35,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 17:57:35,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 17:57:35,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 17:57:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 17:57:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 17:57:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 17:57:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 17:57:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 17:57:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 17:57:35,609 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 17:57:35,612 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 17:57:35,922 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 17:57:35,976 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 17:57:35,976 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 17:57:35,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:57:35 BoogieIcfgContainer [2022-11-20 17:57:35,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 17:57:35,980 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 17:57:35,980 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 17:57:35,995 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 17:57:35,996 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:57:35" (1/1) ... [2022-11-20 17:57:36,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 17:57:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:57:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2022-11-20 17:57:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-20 17:57:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:57:36,082 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:57:36,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:57:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:57:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:57:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:57:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2022-11-20 17:57:36,541 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-20 17:57:36,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:57:36,550 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:57:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:57:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:57:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:57:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:57:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2022-11-20 17:57:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-20 17:57:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 17:57:37,385 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:57:37,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:57:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:57:37,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:57:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:57:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 46 states and 55 transitions. [2022-11-20 17:57:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-11-20 17:57:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 17:57:37,533 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:57:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:57:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:57:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:57:37,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:57:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 46 states and 54 transitions. [2022-11-20 17:57:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-11-20 17:57:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:57:37,963 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:57:37,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:57:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:57:38,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:57:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:57:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:57:38,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:57:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:57:38,089 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2022-11-20 17:57:38,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:57:38 ImpRootNode [2022-11-20 17:57:38,125 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 17:57:38,127 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 17:57:38,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 17:57:38,128 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 17:57:38,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:57:35" (3/4) ... [2022-11-20 17:57:38,132 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 17:57:38,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 17:57:38,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 17:57:38,198 INFO L158 Benchmark]: Toolchain (without parser) took 3345.84ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 129.7MB in the beginning and 131.0MB in the end (delta: -1.2MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2022-11-20 17:57:38,199 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:57:38,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.85ms. Allocated memory is still 159.4MB. Free memory was 129.7MB in the beginning and 113.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 17:57:38,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.30ms. Allocated memory is still 159.4MB. Free memory was 113.7MB in the beginning and 111.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:57:38,200 INFO L158 Benchmark]: Boogie Preprocessor took 28.49ms. Allocated memory is still 159.4MB. Free memory was 111.6MB in the beginning and 110.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:57:38,201 INFO L158 Benchmark]: RCFGBuilder took 614.36ms. Allocated memory is still 159.4MB. Free memory was 110.1MB in the beginning and 90.0MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 17:57:38,202 INFO L158 Benchmark]: CodeCheck took 2145.87ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 90.0MB in the beginning and 132.0MB in the end (delta: -42.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:57:38,202 INFO L158 Benchmark]: Witness Printer took 70.41ms. Allocated memory is still 192.9MB. Free memory was 132.0MB in the beginning and 131.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:57:38,205 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, 44 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 92 IncrementalHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 16 mSDtfsCounter, 92 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND FALSE !(length < 1) [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1073741825, length++=6] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1073741825, length++=6] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.85ms. Allocated memory is still 159.4MB. Free memory was 129.7MB in the beginning and 113.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.30ms. Allocated memory is still 159.4MB. Free memory was 113.7MB in the beginning and 111.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.49ms. Allocated memory is still 159.4MB. Free memory was 111.6MB in the beginning and 110.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 614.36ms. Allocated memory is still 159.4MB. Free memory was 110.1MB in the beginning and 90.0MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 2145.87ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 90.0MB in the beginning and 132.0MB in the end (delta: -42.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 70.41ms. Allocated memory is still 192.9MB. Free memory was 132.0MB in the beginning and 131.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-11-20 17:57:38,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49aefce8-2f93-4bdd-ad6a-28c3bd2755db/bin/ukojak-pZX7IvK2PQ/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)