./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --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 bb17be6c5036a92a96f9e04e4f3a4e1575c4abfe5b11b351c9bb22d6c30d006f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:10:50,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:10:50,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-23 20:10:50,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:10:50,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:10:50,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:10:50,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:10:50,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:10:50,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:10:50,797 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:10:50,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:10:50,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:10:50,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:10:50,803 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:10:50,804 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:10:50,804 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:10:50,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:10:50,805 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:10:50,806 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:10:50,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:10:50,807 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:10:50,807 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:10:50,808 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:10:50,811 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:10:50,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:10:50,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:10:50,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:10:50,813 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:10:50,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:10:50,814 INFO L153 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_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb17be6c5036a92a96f9e04e4f3a4e1575c4abfe5b11b351c9bb22d6c30d006f [2023-11-23 20:10:51,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:10:51,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:10:51,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:10:51,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:10:51,189 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:10:51,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2023-11-23 20:10:54,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:10:54,833 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:10:54,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2023-11-23 20:10:54,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/data/09c745bb4/d9d899cc42944e689fe7680446dc56db/FLAG6f51261ab [2023-11-23 20:10:54,863 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/data/09c745bb4/d9d899cc42944e689fe7680446dc56db [2023-11-23 20:10:54,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:10:54,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:10:54,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:10:54,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:10:54,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:10:54,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:10:54" (1/1) ... [2023-11-23 20:10:54,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66298243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:54, skipping insertion in model container [2023-11-23 20:10:54,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:10:54" (1/1) ... [2023-11-23 20:10:54,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:10:55,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:10:55,356 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:10:55,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:10:55,432 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:10:55,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55 WrapperNode [2023-11-23 20:10:55,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:10:55,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:10:55,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:10:55,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:10:55,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,519 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-11-23 20:10:55,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:10:55,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:10:55,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:10:55,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:10:55,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:10:55,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:10:55,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:10:55,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:10:55,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:10:55" (1/1) ... [2023-11-23 20:10:55,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:10:55,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:10:55,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:10:55,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:10:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:10:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:10:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:10:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:10:55,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:10:55,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:10:55,839 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:10:55,841 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:10:56,160 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:10:56,272 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:10:56,273 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 20:10:56,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:56 BoogieIcfgContainer [2023-11-23 20:10:56,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:10:56,276 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:10:56,276 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:10:56,288 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:10:56,288 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:56" (1/1) ... [2023-11-23 20:10:56,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:10:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2023-11-23 20:10:56,387 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-23 20:10:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:10:56,389 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:10:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:10:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:10:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2023-11-23 20:10:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-23 20:10:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:10:56,826 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:10:56,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:10:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:10:56,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:10:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:10:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:10:56,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:10:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:10:57,018 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-23 20:10:57,040 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-23 20:10:57,046 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-23 20:10:57,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:10:57 ImpRootNode [2023-11-23 20:10:57,051 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:10:57,052 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:10:57,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:10:57,053 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:10:57,056 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:10:56" (3/4) ... [2023-11-23 20:10:57,058 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 20:10:57,061 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-23 20:10:57,061 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-23 20:10:57,105 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:10:57,105 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:10:57,106 INFO L158 Benchmark]: Toolchain (without parser) took 2239.00ms. Allocated memory is still 130.0MB. Free memory was 89.3MB in the beginning and 58.3MB in the end (delta: 30.9MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2023-11-23 20:10:57,107 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 107.0MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:10:57,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 564.60ms. Allocated memory is still 130.0MB. Free memory was 89.3MB in the beginning and 72.9MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:10:57,108 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.72ms. Allocated memory is still 130.0MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:10:57,109 INFO L158 Benchmark]: Boogie Preprocessor took 67.72ms. Allocated memory is still 130.0MB. Free memory was 70.8MB in the beginning and 69.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:10:57,110 INFO L158 Benchmark]: RCFGBuilder took 685.61ms. Allocated memory is still 130.0MB. Free memory was 69.2MB in the beginning and 82.3MB in the end (delta: -13.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 20:10:57,111 INFO L158 Benchmark]: CodeCheck took 775.48ms. Allocated memory is still 130.0MB. Free memory was 82.3MB in the beginning and 59.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 20:10:57,111 INFO L158 Benchmark]: Witness Printer took 53.01ms. Allocated memory is still 130.0MB. Free memory was 59.8MB in the beginning and 58.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:10:57,115 INFO L338 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND FALSE !(length < 1) [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; VAL [arr={2:0}, i=0, length=3] [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 0.38ms. Allocated memory is still 107.0MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 564.60ms. Allocated memory is still 130.0MB. Free memory was 89.3MB in the beginning and 72.9MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.72ms. Allocated memory is still 130.0MB. Free memory was 72.9MB in the beginning and 70.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.72ms. Allocated memory is still 130.0MB. Free memory was 70.8MB in the beginning and 69.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 685.61ms. Allocated memory is still 130.0MB. Free memory was 69.2MB in the beginning and 82.3MB in the end (delta: -13.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * CodeCheck took 775.48ms. Allocated memory is still 130.0MB. Free memory was 82.3MB in the beginning and 59.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 53.01ms. Allocated memory is still 130.0MB. Free memory was 59.8MB in the beginning and 58.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-23 20:10:57,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e15385a3-5a32-45e5-a1f2-53d325f5fe42/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)