./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL --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 0.2.3-dev-9bd2c7f [2023-11-19 03:27:01,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:27:02,111 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-19 03:27:02,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:27:02,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:27:02,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:27:02,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:27:02,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:27:02,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:27:02,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:27:02,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:27:02,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:27:02,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:27:02,177 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 03:27:02,177 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 03:27:02,178 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 03:27:02,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:27:02,178 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:27:02,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:27:02,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:27:02,180 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:27:02,180 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:27:02,181 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:27:02,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:27:02,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:27:02,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:27:02,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:27:02,183 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:27:02,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:27:02,184 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_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2023-11-19 03:27:02,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:27:02,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:27:02,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:27:02,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:27:02,549 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:27:02,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2023-11-19 03:27:05,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:27:05,986 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:27:05,986 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/sv-benchmarks/c/array-memsafety/count_down_unsafe.i [2023-11-19 03:27:06,017 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/data/0febee6c6/43604677164b45d0b60aa7e90ded9d77/FLAGeab261add [2023-11-19 03:27:06,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/data/0febee6c6/43604677164b45d0b60aa7e90ded9d77 [2023-11-19 03:27:06,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:27:06,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:27:06,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:27:06,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:27:06,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:27:06,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbac1f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06, skipping insertion in model container [2023-11-19 03:27:06,059 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:27:06,379 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:27:06,394 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:27:06,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:27:06,497 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:27:06,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06 WrapperNode [2023-11-19 03:27:06,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:27:06,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:27:06,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:27:06,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:27:06,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,539 INFO L138 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2023-11-19 03:27:06,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:27:06,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:27:06,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:27:06,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:27:06,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:27:06,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:27:06,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:27:06,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:27:06,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:27:06" (1/1) ... [2023-11-19 03:27:06,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:27:06,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:27:06,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:27:06,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:27:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:27:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:27:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:27:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:27:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:27:06,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:27:06,758 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:27:06,759 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:27:06,966 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:27:07,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:27:07,072 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 03:27:07,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:27:07 BoogieIcfgContainer [2023-11-19 03:27:07,077 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:27:07,078 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:27:07,079 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:27:07,089 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:27:07,089 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:27:07" (1/1) ... [2023-11-19 03:27:07,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:27:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2023-11-19 03:27:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-19 03:27:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 03:27:07,155 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:27:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 21 states and 24 transitions. [2023-11-19 03:27:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-19 03:27:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 03:27:07,395 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:27:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:27:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:27:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2023-11-19 03:27:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-19 03:27:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 03:27:07,695 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:27:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:27:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:27:07,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:27:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:27:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:27:07,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:27:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:27:07,877 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2023-11-19 03:27:07,900 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 03:27:07,903 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 03:27:07,903 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 03:27:07,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:27:07 ImpRootNode [2023-11-19 03:27:07,906 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:27:07,907 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:27:07,907 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:27:07,907 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:27:07,908 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:27:07" (3/4) ... [2023-11-19 03:27:07,909 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 03:27:07,911 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 03:27:07,912 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 03:27:07,912 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 03:27:07,948 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c961ac8b-1e9d-4e08-a28e-dab4fc0536d0/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:27:07,948 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:27:07,949 INFO L158 Benchmark]: Toolchain (without parser) took 1905.00ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 104.0MB in the end (delta: 21.1MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2023-11-19 03:27:07,950 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 78.0MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:27:07,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.93ms. Allocated memory is still 169.9MB. Free memory was 125.1MB in the beginning and 108.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 03:27:07,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.44ms. Allocated memory is still 169.9MB. Free memory was 108.8MB in the beginning and 107.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:27:07,952 INFO L158 Benchmark]: Boogie Preprocessor took 28.88ms. Allocated memory is still 169.9MB. Free memory was 107.3MB in the beginning and 105.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:27:07,953 INFO L158 Benchmark]: RCFGBuilder took 508.05ms. Allocated memory is still 169.9MB. Free memory was 105.7MB in the beginning and 133.4MB in the end (delta: -27.7MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-19 03:27:07,954 INFO L158 Benchmark]: CodeCheck took 827.67ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 105.2MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-19 03:27:07,954 INFO L158 Benchmark]: Witness Printer took 41.98ms. Allocated memory is still 169.9MB. Free memory was 105.2MB in the beginning and 104.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:27:07,958 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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