./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi --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 f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:01:59,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:01:59,259 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-24 23:01:59,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:01:59,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:01:59,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:01:59,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:01:59,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:01:59,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:01:59,336 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:01:59,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:01:59,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:01:59,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:01:59,338 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:01:59,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:01:59,339 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:01:59,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:01:59,343 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:01:59,344 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:01:59,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:01:59,346 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:01:59,346 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:01:59,347 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:01:59,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:01:59,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:01:59,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:01:59,349 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:01:59,350 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:01:59,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:01:59,365 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_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2023-11-24 23:01:59,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:01:59,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:01:59,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:01:59,696 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:01:59,696 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:01:59,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2023-11-24 23:02:02,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:02:03,161 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:02:03,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2023-11-24 23:02:03,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/data/1fd2f2c96/6daacc7f85144f12976cfec79694e7a1/FLAG328784bbb [2023-11-24 23:02:03,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/data/1fd2f2c96/6daacc7f85144f12976cfec79694e7a1 [2023-11-24 23:02:03,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:02:03,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:02:03,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:02:03,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:02:03,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:02:03,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7046ac94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03, skipping insertion in model container [2023-11-24 23:02:03,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,293 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:02:03,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:02:03,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:02:03,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:02:03,830 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:02:03,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03 WrapperNode [2023-11-24 23:02:03,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:02:03,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:02:03,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:02:03,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:02:03,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,882 INFO L138 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2023-11-24 23:02:03,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:02:03,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:02:03,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:02:03,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:02:03,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,913 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:02:03,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:02:03,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:02:03,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:02:03,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:02:03" (1/1) ... [2023-11-24 23:02:03,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:02:03,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:02:03,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:02:03,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:02:03,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:02:03,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:02:03,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:02:03,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:02:03,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:02:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:02:04,104 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:02:04,106 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:02:04,293 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:02:04,349 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:02:04,349 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:02:04,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:02:04 BoogieIcfgContainer [2023-11-24 23:02:04,351 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:02:04,352 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:02:04,352 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:02:04,362 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:02:04,363 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:02:04" (1/1) ... [2023-11-24 23:02:04,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:02:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:02:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2023-11-24 23:02:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-24 23:02:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:02:04,427 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:02:04,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:02:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:02:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:02:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:02:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 21 states and 24 transitions. [2023-11-24 23:02:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-24 23:02:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:02:04,730 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:02:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:02:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:02:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:02:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:02:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2023-11-24 23:02:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-24 23:02:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:02:05,024 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:02:05,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:02:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:02:05,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:02:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:02:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:02:05,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:02:05,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:02:05,142 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2023-11-24 23:02:05,161 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-24 23:02:05,162 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-24 23:02:05,163 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-24 23:02:05,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:02:05 ImpRootNode [2023-11-24 23:02:05,166 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:02:05,166 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:02:05,166 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:02:05,167 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:02:05,167 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:02:04" (3/4) ... [2023-11-24 23:02:05,168 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:02:05,171 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-24 23:02:05,171 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-24 23:02:05,171 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-24 23:02:05,204 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2312a222-6fdb-4564-aede-52cac4f83334/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 23:02:05,204 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:02:05,205 INFO L158 Benchmark]: Toolchain (without parser) took 1991.55ms. Allocated memory is still 188.7MB. Free memory was 157.6MB in the beginning and 102.0MB in the end (delta: 55.6MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,205 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 130.0MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:02:05,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.74ms. Allocated memory is still 188.7MB. Free memory was 157.6MB in the beginning and 152.6MB in the end (delta: 5.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.13ms. Allocated memory is still 188.7MB. Free memory was 152.6MB in the beginning and 151.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,207 INFO L158 Benchmark]: Boogie Preprocessor took 34.56ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 149.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,208 INFO L158 Benchmark]: RCFGBuilder took 432.03ms. Allocated memory is still 188.7MB. Free memory was 149.3MB in the beginning and 133.7MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,209 INFO L158 Benchmark]: CodeCheck took 813.81ms. Allocated memory is still 188.7MB. Free memory was 133.7MB in the beginning and 104.1MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,209 INFO L158 Benchmark]: Witness Printer took 37.69ms. Allocated memory is still 188.7MB. Free memory was 104.1MB in the beginning and 102.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:02:05,213 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, 21 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 2 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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: [L513] int i, j; [L514] int val; [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L516] length = 1 [L517] int *arr = __builtin_alloca (length); VAL [arr={2:0}, length=1] [L518] COND FALSE !(!arr) [L519] i=0 VAL [arr={2:0}, i=0, length=1] [L519] COND TRUE i