./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/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_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/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_aebb00aa-e42c-4679-8240-b5583651f980/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_aebb00aa-e42c-4679-8240-b5583651f980/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 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-dbf71c6-m [2022-10-17 17:04:14,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:04:14,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:04:14,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:04:14,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:04:14,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:04:14,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:04:14,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:04:14,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:04:14,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:04:14,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:04:14,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:04:14,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:04:14,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:04:14,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:04:14,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:04:14,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:04:14,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:04:14,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:04:14,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:04:14,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:04:14,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:04:14,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:04:14,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:04:15,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:04:15,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:04:15,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:04:15,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:04:15,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:04:15,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:04:15,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:04:15,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:04:15,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:04:15,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:04:15,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:04:15,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:04:15,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:04:15,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:04:15,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:04:15,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:04:15,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:04:15,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-10-17 17:04:15,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:04:15,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:04:15,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:04:15,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:04:15,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:04:15,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:04:15,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:04:15,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:04:15,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:04:15,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:04:15,072 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:04:15,072 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:04:15,072 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:04:15,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:04:15,073 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:04:15,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:04:15,073 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 17:04:15,074 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 17:04:15,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:04:15,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:04:15,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:04:15,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:04:15,075 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 17:04:15,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:04:15,076 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_aebb00aa-e42c-4679-8240-b5583651f980/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2022-10-17 17:04:15,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:04:15,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:04:15,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:04:15,410 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:04:15,411 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:04:15,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2022-10-17 17:04:15,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/data/cb5adeff5/574c221d281349f788c21eef34694667/FLAGa318956ad [2022-10-17 17:04:16,026 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:04:16,026 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2022-10-17 17:04:16,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/data/cb5adeff5/574c221d281349f788c21eef34694667/FLAGa318956ad [2022-10-17 17:04:16,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/data/cb5adeff5/574c221d281349f788c21eef34694667 [2022-10-17 17:04:16,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:04:16,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:04:16,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:04:16,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:04:16,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:04:16,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d6cbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16, skipping insertion in model container [2022-10-17 17:04:16,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:04:16,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:04:16,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:04:16,710 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:04:16,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:04:16,821 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:04:16,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16 WrapperNode [2022-10-17 17:04:16,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:04:16,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:04:16,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:04:16,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:04:16,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,909 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2022-10-17 17:04:16,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:04:16,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:04:16,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:04:16,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:04:16,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:04:16,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:04:16,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:04:16,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:04:16,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:04:16" (1/1) ... [2022-10-17 17:04:16,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:04:17,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 17:04:17,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 17:04:17,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 17:04:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:04:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:04:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:04:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:04:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:04:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:04:17,197 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:04:17,200 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:04:17,452 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:04:17,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:04:17,616 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 17:04:17,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:04:17 BoogieIcfgContainer [2022-10-17 17:04:17,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:04:17,629 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 17:04:17,629 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 17:04:17,640 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 17:04:17,641 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:04:17" (1/1) ... [2022-10-17 17:04:17,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:04:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2022-10-17 17:04:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-10-17 17:04:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:04:17,733 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:18,059 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 17:04:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2022-10-17 17:04:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-10-17 17:04:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:04:18,133 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:18,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:18,456 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 17:04:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2022-10-17 17:04:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-10-17 17:04:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:04:18,746 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:18,862 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 17:04:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 46 states and 55 transitions. [2022-10-17 17:04:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-10-17 17:04:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:04:18,931 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:18,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:19,107 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 17:04:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 46 states and 54 transitions. [2022-10-17 17:04:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-10-17 17:04:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:04:19,300 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:20,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 49 states and 61 transitions. [2022-10-17 17:04:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2022-10-17 17:04:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:04:20,263 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:20,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 51 states and 65 transitions. [2022-10-17 17:04:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-10-17 17:04:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:04:20,421 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 53 states and 68 transitions. [2022-10-17 17:04:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-10-17 17:04:20,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:04:20,570 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 55 states and 71 transitions. [2022-10-17 17:04:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2022-10-17 17:04:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:04:21,433 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 51 states and 61 transitions. [2022-10-17 17:04:21,975 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-10-17 17:04:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:04:21,976 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:21,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:22,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2022-10-17 17:04:22,027 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2022-10-17 17:04:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:04:22,029 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:04:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 52 states and 63 transitions. [2022-10-17 17:04:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-10-17 17:04:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:04:22,316 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2022-10-17 17:04:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2022-10-17 17:04:22,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:04:22,369 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:04:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:22,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 52 states and 63 transitions. [2022-10-17 17:04:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2022-10-17 17:04:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:04:22,503 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:04:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 58 states and 77 transitions. [2022-10-17 17:04:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2022-10-17 17:04:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:04:23,707 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:23,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:04:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 17:04:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:04:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 58 states and 76 transitions. [2022-10-17 17:04:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2022-10-17 17:04:23,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:04:23,905 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:04:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:04:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:04:23,919 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:04:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:04:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:04:23,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:04:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:04:24,019 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2022-10-17 17:04:24,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 05:04:24 ImpRootNode [2022-10-17 17:04:24,071 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 17:04:24,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:04:24,072 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:04:24,072 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:04:24,073 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:04:17" (3/4) ... [2022-10-17 17:04:24,075 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:04:24,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aebb00aa-e42c-4679-8240-b5583651f980/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 17:04:24,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:04:24,170 INFO L158 Benchmark]: Toolchain (without parser) took 7891.33ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.6MB in the beginning and 72.7MB in the end (delta: 831.0kB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,173 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 90.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:04:24,174 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.70ms. Allocated memory is still 109.1MB. Free memory was 73.3MB in the beginning and 78.8MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.59ms. Allocated memory is still 109.1MB. Free memory was 78.8MB in the beginning and 76.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,175 INFO L158 Benchmark]: Boogie Preprocessor took 70.69ms. Allocated memory is still 109.1MB. Free memory was 76.7MB in the beginning and 75.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,176 INFO L158 Benchmark]: RCFGBuilder took 645.02ms. Allocated memory is still 109.1MB. Free memory was 75.4MB in the beginning and 55.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,177 INFO L158 Benchmark]: CodeCheck took 6442.98ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 55.0MB in the beginning and 74.8MB in the end (delta: -19.8MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,179 INFO L158 Benchmark]: Witness Printer took 95.07ms. Allocated memory is still 132.1MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:04:24,182 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: 6.4s, OverallIterations: 16, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 521 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 344 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 81 mSDsCounter, 369 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1400 IncrementalHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 369 mSolverCounterUnsat, 131 mSDtfsCounter, 1400 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 823 GetRequests, 701 SyntacticMatches, 18 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4670 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 11/21 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=1, length++=3] [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=1, length++=3] [L521] COND FALSE !(i < length) [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, i=0, length=1, length++=3] [L526] COND TRUE i