./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak --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 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 ............................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-29 22:20:15,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:20:15,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:20:15,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:20:15,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:20:15,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:20:15,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:20:15,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:20:15,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:20:15,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:20:15,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:20:15,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:20:15,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:20:15,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:20:15,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:20:15,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:20:15,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:20:15,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:20:15,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:20:15,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:20:15,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:20:15,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:20:15,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:20:15,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:20:15,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:20:15,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:20:15,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:20:15,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:20:15,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:20:15,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:20:15,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:20:15,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:20:15,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:20:15,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:20:15,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:20:15,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:20:15,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:20:15,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:20:15,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:20:15,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:20:15,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:20:15,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-29 22:20:15,785 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:20:15,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:20:15,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:20:15,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:20:15,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:20:15,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:20:15,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:20:15,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:20:15,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:20:15,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:20:15,792 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 22:20:15,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 22:20:15,792 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 22:20:15,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:20:15,793 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:20:15,794 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:20:15,794 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 22:20:15,794 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 22:20:15,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:20:15,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:20:15,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 22:20:15,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:20:15,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:20:15,796 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 22:20:15,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:20:15,797 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-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2020-11-29 22:20:16,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:20:16,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:20:16,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:20:16,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:20:16,229 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:20:16,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2020-11-29 22:20:16,332 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/data/7077912c8/eaad811cf70d4e8da10475cb2d6d7756/FLAG8b6f15693 [2020-11-29 22:20:17,061 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:20:17,062 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2020-11-29 22:20:17,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/data/7077912c8/eaad811cf70d4e8da10475cb2d6d7756/FLAG8b6f15693 [2020-11-29 22:20:17,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/data/7077912c8/eaad811cf70d4e8da10475cb2d6d7756 [2020-11-29 22:20:17,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:20:17,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:20:17,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:20:17,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:20:17,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:20:17,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cffad3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17, skipping insertion in model container [2020-11-29 22:20:17,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:20:17,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:20:17,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:20:17,805 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:20:17,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:20:17,917 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:20:17,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17 WrapperNode [2020-11-29 22:20:17,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:20:17,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:20:17,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:20:17,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:20:17,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:20:17,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:20:17,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:20:17,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:20:17,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:17,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... [2020-11-29 22:20:18,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:20:18,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:20:18,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:20:18,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:20:18,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 22:20:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:20:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:20:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:20:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:20:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:20:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:20:18,950 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:20:18,950 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 22:20:18,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:20:18 BoogieIcfgContainer [2020-11-29 22:20:18,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:20:18,953 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 22:20:18,953 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 22:20:18,966 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 22:20:18,967 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:20:18" (1/1) ... [2020-11-29 22:20:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:20:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:20:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2020-11-29 22:20:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-29 22:20:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 22:20:19,030 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:20:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:20:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:20:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:20:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2020-11-29 22:20:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-11-29 22:20:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 22:20:19,222 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:20:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:20:19,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:20:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:20:19,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:20:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:20:19,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:20:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:20:19,383 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:20:19,401 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-11-29 22:20:19,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 10:20:19 ImpRootNode [2020-11-29 22:20:19,426 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 22:20:19,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:20:19,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:20:19,427 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:20:19,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:20:18" (3/4) ... [2020-11-29 22:20:19,429 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:20:19,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2dd7cf6-afba-4394-b3d0-b44495c27a4d/bin/ukojak/witness.graphml [2020-11-29 22:20:19,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:20:19,483 INFO L168 Benchmark]: Toolchain (without parser) took 2145.76 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 43.2 kB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,487 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 90.2 MB. Free memory was 47.3 MB in the beginning and 47.3 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:20:19,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.06 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 57.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,489 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.44 ms. Allocated memory is still 90.2 MB. Free memory was 57.2 MB in the beginning and 55.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,490 INFO L168 Benchmark]: Boogie Preprocessor took 34.04 ms. Allocated memory is still 90.2 MB. Free memory was 55.5 MB in the beginning and 53.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,491 INFO L168 Benchmark]: RCFGBuilder took 950.27 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.8 MB in the beginning and 81.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,494 INFO L168 Benchmark]: CodeCheck took 472.53 ms. Allocated memory is still 115.3 MB. Free memory was 81.9 MB in the beginning and 62.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,495 INFO L168 Benchmark]: Witness Printer took 53.82 ms. Allocated memory is still 115.3 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:20:19,501 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. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 522]: 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 TRUE length < 1 [L517] length = 1 [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; [L520] COND TRUE i < length [L522] arr[i] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 90.2 MB. Free memory was 47.3 MB in the beginning and 47.3 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 581.06 ms. Allocated memory is still 90.2 MB. Free memory was 59.8 MB in the beginning and 57.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.44 ms. Allocated memory is still 90.2 MB. Free memory was 57.2 MB in the beginning and 55.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.04 ms. Allocated memory is still 90.2 MB. Free memory was 55.5 MB in the beginning and 53.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 950.27 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 53.8 MB in the beginning and 81.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. * CodeCheck took 472.53 ms. Allocated memory is still 115.3 MB. Free memory was 81.9 MB in the beginning and 62.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 53.82 ms. Allocated memory is still 115.3 MB. Free memory was 62.1 MB in the beginning and 60.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...