./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/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_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b --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 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 05:52:07,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 05:52:07,939 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2024-12-06 05:52:07,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 05:52:07,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 05:52:07,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 05:52:07,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 05:52:07,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-06 05:52:07,963 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 05:52:07,964 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 05:52:07,964 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 05:52:07,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:52:07,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 05:52:07,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 05:52:07,965 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 05:52:07,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 05:52:07,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b 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 -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2024-12-06 05:52:08,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 05:52:08,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 05:52:08,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 05:52:08,207 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 05:52:08,208 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 05:52:08,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2024-12-06 05:52:10,810 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/data/33dae9fee/6e73e13f60f448f6a1f8ce16897189bc/FLAG546025389 [2024-12-06 05:52:11,059 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 05:52:11,060 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2024-12-06 05:52:11,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/data/33dae9fee/6e73e13f60f448f6a1f8ce16897189bc/FLAG546025389 [2024-12-06 05:52:11,400 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/data/33dae9fee/6e73e13f60f448f6a1f8ce16897189bc [2024-12-06 05:52:11,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 05:52:11,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 05:52:11,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 05:52:11,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 05:52:11,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 05:52:11,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ca44be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11, skipping insertion in model container [2024-12-06 05:52:11,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 05:52:11,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:52:11,665 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 05:52:11,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 05:52:11,721 INFO L204 MainTranslator]: Completed translation [2024-12-06 05:52:11,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11 WrapperNode [2024-12-06 05:52:11,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 05:52:11,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 05:52:11,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 05:52:11,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 05:52:11,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,753 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2024-12-06 05:52:11,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 05:52:11,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 05:52:11,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 05:52:11,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 05:52:11,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,768 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,768 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 05:52:11,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 05:52:11,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 05:52:11,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 05:52:11,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:11" (1/1) ... [2024-12-06 05:52:11,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 05:52:11,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 05:52:11,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 05:52:11,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 05:52:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 05:52:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 05:52:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-06 05:52:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 05:52:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 05:52:11,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 05:52:11,906 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 05:52:11,907 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 05:52:12,102 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-12-06 05:52:12,102 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 05:52:12,160 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 05:52:12,160 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-06 05:52:12,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:52:12 BoogieIcfgContainer [2024-12-06 05:52:12,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 05:52:12,161 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 05:52:12,161 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 05:52:12,169 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 05:52:12,169 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:52:12" (1/1) ... [2024-12-06 05:52:12,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 05:52:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:52:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2024-12-06 05:52:12,214 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-12-06 05:52:12,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 05:52:12,215 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:52:12,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:52:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:52:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:52:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:52:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2024-12-06 05:52:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-12-06 05:52:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 05:52:12,437 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:52:12,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:52:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:52:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:52:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:52:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 45 states and 51 transitions. [2024-12-06 05:52:12,842 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-12-06 05:52:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 05:52:12,842 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:52:12,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:52:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:52:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:52:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:52:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 47 states and 55 transitions. [2024-12-06 05:52:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-12-06 05:52:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 05:52:12,895 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:52:12,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:52:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:52:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:52:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:52:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 48 states and 58 transitions. [2024-12-06 05:52:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2024-12-06 05:52:13,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 05:52:13,055 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:52:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:52:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 05:52:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 05:52:13,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 05:52:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 48 states and 57 transitions. [2024-12-06 05:52:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-12-06 05:52:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 05:52:13,268 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 05:52:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 05:52:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:52:13,282 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:52:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:52:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:52:13,335 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 05:52:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 05:52:13,355 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-12-06 05:52:13,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 05:52:13 ImpRootNode [2024-12-06 05:52:13,372 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 05:52:13,372 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 05:52:13,372 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 05:52:13,372 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 05:52:13,373 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:52:12" (3/4) ... [2024-12-06 05:52:13,373 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 05:52:13,400 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 5. [2024-12-06 05:52:13,430 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 05:52:13,430 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 05:52:13,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 05:52:13,431 INFO L158 Benchmark]: Toolchain (without parser) took 2027.06ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 104.8MB in the end (delta: 10.8MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2024-12-06 05:52:13,431 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:52:13,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.26ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 98.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 05:52:13,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.29ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 97.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:52:13,432 INFO L158 Benchmark]: Boogie Preprocessor took 19.56ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 96.2MB in the end (delta: 968.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:52:13,432 INFO L158 Benchmark]: RCFGBuilder took 386.68ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 75.0MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-06 05:52:13,432 INFO L158 Benchmark]: CodeCheck took 1210.33ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 109.0MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 05:52:13,433 INFO L158 Benchmark]: Witness Printer took 57.83ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 104.8MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-06 05:52:13,434 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: 1.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 151 IncrementalHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 8 mSDtfsCounter, 151 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 69 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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, ConComCheckerStatistics: 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*sizeof(int)); [L521] int i = 0; VAL [arr={2:0}, i=0, length=1073741825] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ VAL [arr={2:0}, i=1, length=1073741825] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.26ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 98.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.29ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 97.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.56ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 96.2MB in the end (delta: 968.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 386.68ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 75.0MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 1210.33ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 109.0MB in the end (delta: -34.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.83ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 104.8MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 05:52:13,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba53350-2325-441d-abac-6abc6bb79a94/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with 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)