./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/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_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI --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 ..................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:26:21,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:26:21,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:26:21,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:26:21,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:26:21,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:26:21,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:26:21,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:26:21,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:26:21,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:26:21,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:26:21,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:26:21,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:26:21,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:26:21,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:26:21,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:26:21,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:26:21,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:26:21,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:26:21,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:26:21,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:26:21,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:26:21,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:26:21,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:26:21,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:26:21,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:26:21,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:26:21,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:26:21,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:26:21,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:26:21,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:26:21,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:26:21,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:26:21,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:26:21,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:26:21,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:26:21,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:26:21,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:26:21,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:26:21,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:26:21,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:26:21,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-10-29 04:26:21,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:26:21,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:26:21,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 04:26:21,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 04:26:21,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:26:21,950 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:26:21,950 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:26:21,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:26:21,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:26:21,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:26:21,952 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 04:26:21,952 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 04:26:21,953 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 04:26:21,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:26:21,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:26:21,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:26:21,954 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 04:26:21,954 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 04:26:21,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:26:21,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 04:26:21,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:26:21,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:26:21,955 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 04:26:21,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:26:21,956 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_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2021-10-29 04:26:22,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:26:22,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:26:22,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:26:22,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:26:22,282 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:26:22,283 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-10-29 04:26:22,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/data/bb59cb3ff/13961186629b42df8e30a2cbae27b5a3/FLAGe489fa1f0 [2021-10-29 04:26:22,923 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:26:22,923 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-10-29 04:26:22,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/data/bb59cb3ff/13961186629b42df8e30a2cbae27b5a3/FLAGe489fa1f0 [2021-10-29 04:26:23,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/data/bb59cb3ff/13961186629b42df8e30a2cbae27b5a3 [2021-10-29 04:26:23,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:26:23,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:26:23,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:26:23,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:26:23,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:26:23,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d1443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23, skipping insertion in model container [2021-10-29 04:26:23,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:26:23,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:26:23,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:26:23,627 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:26:23,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:26:23,694 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:26:23,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23 WrapperNode [2021-10-29 04:26:23,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:26:23,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:26:23,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:26:23,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:26:23,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:26:23,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:26:23,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:26:23,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:26:23,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:26:23,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:26:23,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:26:23,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:26:23,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:26:23" (1/1) ... [2021-10-29 04:26:23,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 04:26:23,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 04:26:23,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 04:26:23,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 04:26:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:26:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:26:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:26:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 04:26:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:26:23,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:26:24,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:26:24,591 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:26:24,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:26:24 BoogieIcfgContainer [2021-10-29 04:26:24,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:26:24,597 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 04:26:24,598 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 04:26:24,608 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 04:26:24,608 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:26:24" (1/1) ... [2021-10-29 04:26:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:26:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2021-10-29 04:26:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-10-29 04:26:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 04:26:24,663 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:24,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:24,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2021-10-29 04:26:24,881 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-29 04:26:24,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 04:26:24,882 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:24,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2021-10-29 04:26:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-10-29 04:26:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:26:25,271 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:25,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2021-10-29 04:26:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-10-29 04:26:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:26:25,309 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:25,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 48 states and 59 transitions. [2021-10-29 04:26:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-10-29 04:26:25,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:26:25,498 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:25,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 49 states and 60 transitions. [2021-10-29 04:26:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2021-10-29 04:26:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 04:26:25,531 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:25,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:25,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2021-10-29 04:26:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-10-29 04:26:25,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 04:26:25,777 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:25,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:25,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 52 states and 66 transitions. [2021-10-29 04:26:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-10-29 04:26:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:26:26,416 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:26,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:27,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 54 states and 69 transitions. [2021-10-29 04:26:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-10-29 04:26:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:26:27,324 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:27,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2021-10-29 04:26:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-10-29 04:26:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:26:27,794 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:27,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2021-10-29 04:26:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-10-29 04:26:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 04:26:27,827 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:27,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:26:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2021-10-29 04:26:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-10-29 04:26:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:26:28,040 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:28,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:28,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:26:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 50 states and 61 transitions. [2021-10-29 04:26:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2021-10-29 04:26:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 04:26:28,111 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:28,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:26:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 04:26:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 04:26:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2021-10-29 04:26:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-10-29 04:26:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 04:26:28,210 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 04:26:28,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:26:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:26:28,224 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:26:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:26:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:26:28,268 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:26:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:26:28,307 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2021-10-29 04:26:28,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 04:26:28 ImpRootNode [2021-10-29 04:26:28,344 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 04:26:28,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:26:28,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:26:28,345 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:26:28,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:26:24" (3/4) ... [2021-10-29 04:26:28,363 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:26:28,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3002400-b4eb-454c-b976-0b0e2d7c18f4/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 04:26:28,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:26:28,436 INFO L168 Benchmark]: Toolchain (without parser) took 5180.99 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 50.5 MB in the beginning and 65.3 MB in the end (delta: -14.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:26:28,437 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 88.1 MB. Free memory was 68.4 MB in the beginning and 68.3 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:26:28,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.39 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 50.3 MB in the beginning and 77.9 MB in the end (delta: -27.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:26:28,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.65 ms. Allocated memory is still 107.0 MB. Free memory was 77.9 MB in the beginning and 75.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:26:28,439 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 107.0 MB. Free memory was 75.8 MB in the beginning and 74.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:26:28,440 INFO L168 Benchmark]: RCFGBuilder took 827.11 ms. Allocated memory is still 107.0 MB. Free memory was 74.5 MB in the beginning and 54.8 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:26:28,441 INFO L168 Benchmark]: CodeCheck took 3746.80 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 54.8 MB in the beginning and 67.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-29 04:26:28,458 INFO L168 Benchmark]: Witness Printer took 89.96 ms. Allocated memory is still 130.0 MB. Free memory was 66.4 MB in the beginning and 65.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:26:28,463 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: 3.6s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 24656 SDtfs, 25324 SDslu, 19008 SDs, 0 SdLazy, 102314 SolverSat, 37298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 585 GetRequests, 494 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 475 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 5/13 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; [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ [L521] COND FALSE !(i < length) [L526] i=0 [L526] COND TRUE i