./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/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_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN --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 --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 05:58:03,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 05:58:03,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 05:58:03,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 05:58:03,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 05:58:03,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 05:58:03,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 05:58:03,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 05:58:03,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 05:58:03,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 05:58:03,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 05:58:03,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 05:58:03,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 05:58:03,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 05:58:03,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 05:58:03,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 05:58:03,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 05:58:03,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 05:58:03,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 05:58:03,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 05:58:04,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 05:58:04,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 05:58:04,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 05:58:04,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 05:58:04,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 05:58:04,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 05:58:04,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 05:58:04,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 05:58:04,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 05:58:04,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 05:58:04,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 05:58:04,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 05:58:04,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 05:58:04,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 05:58:04,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 05:58:04,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 05:58:04,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 05:58:04,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 05:58:04,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 05:58:04,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 05:58:04,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 05:58:04,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-21 05:58:04,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 05:58:04,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 05:58:04,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 05:58:04,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 05:58:04,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 05:58:04,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 05:58:04,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 05:58:04,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 05:58:04,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 05:58:04,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 05:58:04,088 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 05:58:04,088 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 05:58:04,089 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 05:58:04,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 05:58:04,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 05:58:04,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 05:58:04,090 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-21 05:58:04,090 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-21 05:58:04,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 05:58:04,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 05:58:04,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 05:58:04,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 05:58:04,091 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-21 05:58:04,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 05:58:04,092 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_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2021-11-21 05:58:04,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 05:58:04,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 05:58:04,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 05:58:04,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 05:58:04,383 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 05:58:04,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-11-21 05:58:04,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/data/f1d364f01/24ee953ff9e04017add8016ec2ec0606/FLAG5b874fb9b [2021-11-21 05:58:05,045 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 05:58:05,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-11-21 05:58:05,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/data/f1d364f01/24ee953ff9e04017add8016ec2ec0606/FLAG5b874fb9b [2021-11-21 05:58:05,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/data/f1d364f01/24ee953ff9e04017add8016ec2ec0606 [2021-11-21 05:58:05,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 05:58:05,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 05:58:05,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 05:58:05,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 05:58:05,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 05:58:05,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:05,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb5b42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05, skipping insertion in model container [2021-11-21 05:58:05,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:05,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 05:58:05,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 05:58:05,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 05:58:05,856 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 05:58:05,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 05:58:05,941 INFO L208 MainTranslator]: Completed translation [2021-11-21 05:58:05,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05 WrapperNode [2021-11-21 05:58:05,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 05:58:05,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 05:58:05,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 05:58:05,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 05:58:05,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:05,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:05,997 INFO L137 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2021-11-21 05:58:05,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 05:58:05,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 05:58:05,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 05:58:05,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 05:58:06,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 05:58:06,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 05:58:06,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 05:58:06,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 05:58:06,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:58:05" (1/1) ... [2021-11-21 05:58:06,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-21 05:58:06,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/z3 [2021-11-21 05:58:06,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-21 05:58:06,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-21 05:58:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 05:58:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 05:58:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 05:58:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 05:58:06,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 05:58:06,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 05:58:06,242 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 05:58:06,244 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 05:58:06,536 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 05:58:06,588 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 05:58:06,589 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 05:58:06,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:58:06 BoogieIcfgContainer [2021-11-21 05:58:06,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 05:58:06,592 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-21 05:58:06,593 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-21 05:58:06,609 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-21 05:58:06,609 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:58:06" (1/1) ... [2021-11-21 05:58:06,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 05:58:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2021-11-21 05:58:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-21 05:58:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 05:58:06,721 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:06,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:06,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2021-11-21 05:58:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-11-21 05:58:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 05:58:06,982 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:06,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:07,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:07,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2021-11-21 05:58:07,391 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-11-21 05:58:07,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 05:58:07,391 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:07,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2021-11-21 05:58:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-11-21 05:58:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 05:58:07,465 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:07,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 48 states and 59 transitions. [2021-11-21 05:58:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-11-21 05:58:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 05:58:07,689 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:07,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 49 states and 60 transitions. [2021-11-21 05:58:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2021-11-21 05:58:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 05:58:07,750 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:07,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:07,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:07,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2021-11-21 05:58:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-11-21 05:58:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 05:58:07,978 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:07,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 52 states and 66 transitions. [2021-11-21 05:58:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-21 05:58:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 05:58:08,588 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:08,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 54 states and 69 transitions. [2021-11-21 05:58:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-11-21 05:58:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 05:58:09,461 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:09,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2021-11-21 05:58:09,891 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-21 05:58:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 05:58:09,891 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:09,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2021-11-21 05:58:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-11-21 05:58:09,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 05:58:09,921 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:09,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 05:58:10,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2021-11-21 05:58:10,114 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-21 05:58:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 05:58:10,115 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:10,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 05:58:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 50 states and 61 transitions. [2021-11-21 05:58:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2021-11-21 05:58:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 05:58:10,148 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:10,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 05:58:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2021-11-21 05:58:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-21 05:58:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 05:58:10,220 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:10,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 05:58:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 05:58:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-21 05:58:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 46 states and 55 transitions. [2021-11-21 05:58:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2021-11-21 05:58:10,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 05:58:10,277 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-21 05:58:10,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 05:58:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:58:10,298 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 05:58:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:58:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:58:10,365 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 05:58:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 05:58:10,408 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 15 iterations. [2021-11-21 05:58:10,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 05:58:10 ImpRootNode [2021-11-21 05:58:10,452 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-21 05:58:10,452 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 05:58:10,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 05:58:10,453 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 05:58:10,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:58:06" (3/4) ... [2021-11-21 05:58:10,455 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 05:58:10,497 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cbda0b5-d91b-4b70-b1a7-bed35512f291/bin/ukojak-vF6T2TMglN/witness.graphml [2021-11-21 05:58:10,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 05:58:10,498 INFO L158 Benchmark]: Toolchain (without parser) took 5100.82ms. Allocated memory was 117.4MB in the beginning and 174.1MB in the end (delta: 56.6MB). Free memory was 87.7MB in the beginning and 105.2MB in the end (delta: -17.5MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2021-11-21 05:58:10,499 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 05:58:10,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.93ms. Allocated memory is still 117.4MB. Free memory was 87.4MB in the beginning and 84.1MB in the end (delta: 3.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 05:58:10,500 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.93ms. Allocated memory is still 117.4MB. Free memory was 84.1MB in the beginning and 82.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 05:58:10,501 INFO L158 Benchmark]: Boogie Preprocessor took 25.12ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 05:58:10,501 INFO L158 Benchmark]: RCFGBuilder took 567.41ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 64.1MB in the end (delta: 16.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-21 05:58:10,502 INFO L158 Benchmark]: CodeCheck took 3859.41ms. Allocated memory was 117.4MB in the beginning and 174.1MB in the end (delta: 56.6MB). Free memory was 63.8MB in the beginning and 107.2MB in the end (delta: -43.4MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-21 05:58:10,503 INFO L158 Benchmark]: Witness Printer took 44.78ms. Allocated memory is still 174.1MB. Free memory was 107.2MB in the beginning and 105.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 05:58:10,507 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: 3.8s, OverallIterations: 15, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 317 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 262 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 128 mSDsCounter, 292 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 970 IncrementalHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 292 mSolverCounterUnsat, 80 mSDtfsCounter, 970 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 668 GetRequests, 577 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 8/16 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: 529]: 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++=8] [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++=8] [L521] COND FALSE !(i < length) [L526] i=0 VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, i=1, length=1, length++=8] [L526] COND TRUE i