./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY --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 0.2.1-dev-4e77c04 [2021-10-13 04:54:47,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 04:54:47,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 04:54:47,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 04:54:47,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 04:54:47,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 04:54:47,214 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 04:54:47,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 04:54:47,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 04:54:47,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 04:54:47,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 04:54:47,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 04:54:47,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 04:54:47,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 04:54:47,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 04:54:47,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 04:54:47,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 04:54:47,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 04:54:47,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 04:54:47,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 04:54:47,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 04:54:47,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 04:54:47,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 04:54:47,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 04:54:47,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 04:54:47,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 04:54:47,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 04:54:47,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 04:54:47,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 04:54:47,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 04:54:47,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 04:54:47,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 04:54:47,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 04:54:47,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 04:54:47,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 04:54:47,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 04:54:47,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 04:54:47,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 04:54:47,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 04:54:47,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 04:54:47,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 04:54:47,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-10-13 04:54:47,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 04:54:47,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 04:54:47,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 04:54:47,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 04:54:47,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 04:54:47,305 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 04:54:47,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 04:54:47,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 04:54:47,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 04:54:47,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 04:54:47,307 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 04:54:47,307 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 04:54:47,307 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 04:54:47,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 04:54:47,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 04:54:47,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 04:54:47,309 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 04:54:47,309 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 04:54:47,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 04:54:47,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:54:47,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 04:54:47,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 04:54:47,311 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 04:54:47,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 04:54:47,311 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_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2021-10-13 04:54:47,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 04:54:47,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 04:54:47,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 04:54:47,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 04:54:47,646 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 04:54:47,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2021-10-13 04:54:47,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/data/9ce9a698d/7a67b4b2947548c2a4d6d10f52c5de61/FLAG2f076dd1b [2021-10-13 04:54:48,426 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 04:54:48,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2021-10-13 04:54:48,455 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/data/9ce9a698d/7a67b4b2947548c2a4d6d10f52c5de61/FLAG2f076dd1b [2021-10-13 04:54:48,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/data/9ce9a698d/7a67b4b2947548c2a4d6d10f52c5de61 [2021-10-13 04:54:48,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 04:54:48,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 04:54:48,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 04:54:48,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 04:54:48,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 04:54:48,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:54:48" (1/1) ... [2021-10-13 04:54:48,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106c9054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:48, skipping insertion in model container [2021-10-13 04:54:48,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:54:48" (1/1) ... [2021-10-13 04:54:48,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 04:54:48,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 04:54:49,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:54:49,144 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 04:54:49,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:54:49,274 INFO L208 MainTranslator]: Completed translation [2021-10-13 04:54:49,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49 WrapperNode [2021-10-13 04:54:49,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 04:54:49,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 04:54:49,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 04:54:49,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 04:54:49,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 04:54:49,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 04:54:49,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 04:54:49,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 04:54:49,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 04:54:49,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 04:54:49,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 04:54:49,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 04:54:49,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:54:49" (1/1) ... [2021-10-13 04:54:49,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:54:49,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/z3 [2021-10-13 04:54:49,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 04:54:49,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 04:54:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 04:54:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 04:54:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 04:54:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 04:54:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 04:54:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 04:54:50,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 04:54:50,321 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 04:54:50,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:54:50 BoogieIcfgContainer [2021-10-13 04:54:50,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 04:54:50,326 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 04:54:50,326 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 04:54:50,352 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 04:54:50,359 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:54:50" (1/1) ... [2021-10-13 04:54:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 04:54:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:54:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2021-10-13 04:54:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-10-13 04:54:50,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 04:54:50,419 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:54:50,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:54:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:54:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:54:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:54:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2021-10-13 04:54:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-13 04:54:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 04:54:50,703 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:54:50,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:54:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:54:50,774 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:54:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:54:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:54:50,884 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:54:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:54:50,920 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-10-13 04:54:50,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 04:54:50 ImpRootNode [2021-10-13 04:54:50,949 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 04:54:50,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 04:54:50,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 04:54:50,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 04:54:50,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:54:50" (3/4) ... [2021-10-13 04:54:50,954 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 04:54:51,025 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 04:54:51,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 04:54:51,034 INFO L168 Benchmark]: Toolchain (without parser) took 2352.85 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 60.8 MB in the beginning and 77.1 MB in the end (delta: -16.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 04:54:51,035 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 92.3 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:54:51,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.14 ms. Allocated memory is still 92.3 MB. Free memory was 60.6 MB in the beginning and 62.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 04:54:51,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.39 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 60.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 04:54:51,039 INFO L168 Benchmark]: Boogie Preprocessor took 72.91 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 59.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:54:51,040 INFO L168 Benchmark]: RCFGBuilder took 876.92 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 59.3 MB in the beginning and 94.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-10-13 04:54:51,044 INFO L168 Benchmark]: CodeCheck took 623.21 ms. Allocated memory is still 121.6 MB. Free memory was 93.9 MB in the beginning and 78.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 04:54:51,046 INFO L168 Benchmark]: Witness Printer took 76.36 ms. Allocated memory is still 121.6 MB. Free memory was 78.6 MB in the beginning and 77.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:54:51,052 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: 533.6ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 13.6ms SsaConstructionTime, 53.6ms SatisfiabilityAnalysisTime, 103.7ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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, 0.0ms 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 FALSE !(length < 1) [L518] COND TRUE length % 2 == 0 [L518] length++ [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 0.69 ms. Allocated memory is still 92.3 MB. Free memory is still 49.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.14 ms. Allocated memory is still 92.3 MB. Free memory was 60.6 MB in the beginning and 62.8 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.39 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 60.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.91 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 59.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 876.92 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 59.3 MB in the beginning and 94.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * CodeCheck took 623.21 ms. Allocated memory is still 121.6 MB. Free memory was 93.9 MB in the beginning and 78.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 76.36 ms. Allocated memory is still 121.6 MB. Free memory was 78.6 MB in the beginning and 77.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 04:54:51,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_425a015c-3a1f-41b8-bd79-f9f3600e4cfa/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...