./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3 --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 0.3.0-dev-d790fec [2024-11-25 04:24:22,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-25 04:24:23,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2024-11-25 04:24:23,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-25 04:24:23,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-25 04:24:23,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-25 04:24:23,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-25 04:24:23,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-25 04:24:23,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-25 04:24:23,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-25 04:24:23,062 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-25 04:24:23,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-25 04:24:23,062 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-25 04:24:23,062 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-25 04:24:23,062 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-25 04:24:23,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-25 04:24:23,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 04:24:23,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-25 04:24:23,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-25 04:24:23,064 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-25 04:24:23,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-25 04:24:23,065 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_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3 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 [2024-11-25 04:24:23,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-25 04:24:23,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-25 04:24:23,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-25 04:24:23,421 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-25 04:24:23,422 INFO L274 PluginConnector]: CDTParser initialized [2024-11-25 04:24:23,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2024-11-25 04:24:26,460 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/data/f0edb58ab/ca9a97114d604b90a9821d1eb9aa2a18/FLAG5ac725b40 [2024-11-25 04:24:26,816 INFO L384 CDTParser]: Found 1 translation units. [2024-11-25 04:24:26,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2024-11-25 04:24:26,830 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/data/f0edb58ab/ca9a97114d604b90a9821d1eb9aa2a18/FLAG5ac725b40 [2024-11-25 04:24:26,845 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/data/f0edb58ab/ca9a97114d604b90a9821d1eb9aa2a18 [2024-11-25 04:24:26,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-25 04:24:26,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-25 04:24:26,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-25 04:24:26,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-25 04:24:26,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-25 04:24:26,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:24:26" (1/1) ... [2024-11-25 04:24:26,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae18f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:26, skipping insertion in model container [2024-11-25 04:24:26,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:24:26" (1/1) ... [2024-11-25 04:24:26,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-25 04:24:27,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 04:24:27,189 INFO L200 MainTranslator]: Completed pre-run [2024-11-25 04:24:27,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-25 04:24:27,258 INFO L204 MainTranslator]: Completed translation [2024-11-25 04:24:27,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27 WrapperNode [2024-11-25 04:24:27,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-25 04:24:27,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-25 04:24:27,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-25 04:24:27,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-25 04:24:27,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,294 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2024-11-25 04:24:27,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-25 04:24:27,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-25 04:24:27,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-25 04:24:27,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-25 04:24:27,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,310 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-25 04:24:27,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-25 04:24:27,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-25 04:24:27,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-25 04:24:27,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-25 04:24:27,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/z3 [2024-11-25 04:24:27,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-25 04:24:27,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-25 04:24:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-25 04:24:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-25 04:24:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-25 04:24:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-25 04:24:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-25 04:24:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-25 04:24:27,496 INFO L234 CfgBuilder]: Building ICFG [2024-11-25 04:24:27,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-25 04:24:27,854 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-11-25 04:24:27,856 INFO L283 CfgBuilder]: Performing block encoding [2024-11-25 04:24:27,951 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-25 04:24:27,951 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-25 04:24:27,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:24:27 BoogieIcfgContainer [2024-11-25 04:24:27,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-25 04:24:27,953 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-25 04:24:27,953 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-25 04:24:27,964 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-25 04:24:27,964 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:24:27" (1/1) ... [2024-11-25 04:24:27,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-25 04:24:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:24:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2024-11-25 04:24:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-11-25 04:24:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-25 04:24:28,021 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:24:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:24:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-25 04:24:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-25 04:24:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-25 04:24:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2024-11-25 04:24:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-11-25 04:24:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-25 04:24:28,374 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-25 04:24:28,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-25 04:24:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:24:28,406 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 04:24:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:24:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:24:28,469 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-25 04:24:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-25 04:24:28,490 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2024-11-25 04:24:28,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 04:24:28 ImpRootNode [2024-11-25 04:24:28,511 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-25 04:24:28,511 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-25 04:24:28,511 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-25 04:24:28,512 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-25 04:24:28,512 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:24:27" (3/4) ... [2024-11-25 04:24:28,513 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-25 04:24:28,547 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4. [2024-11-25 04:24:28,593 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/witness.graphml [2024-11-25 04:24:28,595 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/witness.yml [2024-11-25 04:24:28,595 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-25 04:24:28,596 INFO L158 Benchmark]: Toolchain (without parser) took 1746.15ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.0MB in the end (delta: 13.3MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2024-11-25 04:24:28,597 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:24:28,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.35ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 75.6MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-25 04:24:28,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.74ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 73.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:24:28,600 INFO L158 Benchmark]: Boogie Preprocessor took 26.79ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:24:28,601 INFO L158 Benchmark]: RCFGBuilder took 629.35ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 51.5MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-25 04:24:28,601 INFO L158 Benchmark]: CodeCheck took 557.98ms. Allocated memory is still 117.4MB. Free memory was 51.5MB in the beginning and 83.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-25 04:24:28,602 INFO L158 Benchmark]: Witness Printer took 83.50ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 79.0MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-25 04:24:28,603 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: 0.5s, 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, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 12 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, 0.0s 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, 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 TRUE length % 2 == 0 [L518] length++ [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 0.28ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.35ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 75.6MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.74ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 73.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.79ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 629.35ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 51.5MB in the end (delta: 21.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * CodeCheck took 557.98ms. Allocated memory is still 117.4MB. Free memory was 51.5MB in the beginning and 83.1MB in the end (delta: -31.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 83.50ms. Allocated memory is still 117.4MB. Free memory was 83.1MB in the beginning and 79.0MB 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! [2024-11-25 04:24:28,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6f261ed-e818-48a6-80ec-2ee6e07c84dc/bin/ukojak-verify-ENZ3QT5qd3/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)