./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen_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_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/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_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/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_3726e140-5cb6-4f19-b263-2ce9469c77b0/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 1fa4bda6bd30ba2cdf5e016e12b6593fa4b1ef45b4dc13eb01e28da7c534ab67 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:55:37,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:55:37,563 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-24 22:55:37,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:55:37,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:55:37,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:55:37,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:55:37,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:55:37,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:55:37,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:55:37,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:55:37,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:55:37,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:55:37,601 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:55:37,601 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:55:37,602 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:55:37,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:55:37,603 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:55:37,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:55:37,604 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:55:37,605 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:55:37,606 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:55:37,607 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:55:37,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:55:37,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:55:37,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:55:37,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:55:37,610 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:55:37,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:55:37,611 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_3726e140-5cb6-4f19-b263-2ce9469c77b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa4bda6bd30ba2cdf5e016e12b6593fa4b1ef45b4dc13eb01e28da7c534ab67 [2023-11-24 22:55:37,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:55:37,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:55:37,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:55:37,982 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:55:37,983 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:55:37,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2023-11-24 22:55:41,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:55:42,012 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:55:42,013 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2023-11-24 22:55:42,030 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/data/e5ef49b80/a910ee7b4cd442d6bb74f5934d763a5e/FLAG093a69ff6 [2023-11-24 22:55:42,053 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/data/e5ef49b80/a910ee7b4cd442d6bb74f5934d763a5e [2023-11-24 22:55:42,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:55:42,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:55:42,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:55:42,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:55:42,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:55:42,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deb164b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42, skipping insertion in model container [2023-11-24 22:55:42,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:55:42,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:55:42,517 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:55:42,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:55:42,644 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:55:42,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42 WrapperNode [2023-11-24 22:55:42,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:55:42,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:55:42,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:55:42,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:55:42,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,724 INFO L138 Inliner]: procedures = 118, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-24 22:55:42,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:55:42,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:55:42,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:55:42,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:55:42,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:55:42,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:55:42,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:55:42,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:55:42,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:55:42" (1/1) ... [2023-11-24 22:55:42,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:55:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:55:42,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:55:42,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:55:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:55:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:55:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:55:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:55:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:55:42,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:55:42,975 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:55:42,977 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:55:43,150 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:55:43,238 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:55:43,243 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:55:43,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:55:43 BoogieIcfgContainer [2023-11-24 22:55:43,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:55:43,267 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:55:43,268 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:55:43,278 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:55:43,278 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:55:43" (1/1) ... [2023-11-24 22:55:43,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:55:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 22 states and 24 transitions. [2023-11-24 22:55:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-24 22:55:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:55:43,346 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:43,592 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 22:55:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2023-11-24 22:55:43,665 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-24 22:55:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:55:43,670 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:44,083 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 22:55:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2023-11-24 22:55:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-24 22:55:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:55:44,400 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:44,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:44,911 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 22:55:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2023-11-24 22:55:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-24 22:55:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:55:45,345 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:45,651 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 22:55:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2023-11-24 22:55:46,351 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-24 22:55:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:55:46,352 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:46,468 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 22:55:46,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:46,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 24 states and 29 transitions. [2023-11-24 22:55:46,548 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-24 22:55:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:55:46,550 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:46,762 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 22:55:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 25 states and 32 transitions. [2023-11-24 22:55:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-11-24 22:55:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 22:55:47,079 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:47,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:55:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 28 states and 39 transitions. [2023-11-24 22:55:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-11-24 22:55:49,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 22:55:49,000 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:55:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 42 transitions. [2023-11-24 22:55:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2023-11-24 22:55:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 22:55:50,880 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:55:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 27 states and 39 transitions. [2023-11-24 22:55:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2023-11-24 22:55:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 22:55:50,931 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:50,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:55:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 30 states and 45 transitions. [2023-11-24 22:55:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 45 transitions. [2023-11-24 22:55:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:55:52,971 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:55:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 26 states and 35 transitions. [2023-11-24 22:55:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-24 22:55:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:55:54,263 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:55:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 23 states and 28 transitions. [2023-11-24 22:55:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-24 22:55:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 22:55:55,892 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:55:56,047 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 22:55:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:55:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 27 states and 33 transitions. [2023-11-24 22:55:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-11-24 22:55:56,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:55:56,986 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:55:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:55:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:55:57,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:55:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:55:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:55:57,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:55:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:55:57,131 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2023-11-24 22:55:57,169 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 22:55:57,173 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-24 22:55:57,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:55:57 ImpRootNode [2023-11-24 22:55:57,181 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:55:57,181 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:55:57,182 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:55:57,182 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:55:57,183 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:55:43" (3/4) ... [2023-11-24 22:55:57,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 22:55:57,197 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-24 22:55:57,197 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-24 22:55:57,264 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:55:57,264 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:55:57,268 INFO L158 Benchmark]: Toolchain (without parser) took 15209.98ms. Allocated memory was 132.1MB in the beginning and 201.3MB in the end (delta: 69.2MB). Free memory was 84.4MB in the beginning and 67.2MB in the end (delta: 17.2MB). Peak memory consumption was 87.4MB. Max. memory is 16.1GB. [2023-11-24 22:55:57,269 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 132.1MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:55:57,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 585.44ms. Allocated memory is still 132.1MB. Free memory was 84.1MB in the beginning and 68.0MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 22:55:57,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.07ms. Allocated memory is still 132.1MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:55:57,271 INFO L158 Benchmark]: Boogie Preprocessor took 56.06ms. Allocated memory is still 132.1MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:55:57,272 INFO L158 Benchmark]: RCFGBuilder took 462.68ms. Allocated memory is still 132.1MB. Free memory was 64.6MB in the beginning and 100.6MB in the end (delta: -36.0MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-11-24 22:55:57,272 INFO L158 Benchmark]: CodeCheck took 13913.43ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 139.7MB in the beginning and 69.3MB in the end (delta: 70.4MB). Peak memory consumption was 104.8MB. Max. memory is 16.1GB. [2023-11-24 22:55:57,273 INFO L158 Benchmark]: Witness Printer took 86.26ms. Allocated memory is still 201.3MB. Free memory was 69.3MB in the beginning and 67.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:55:57,281 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, 22 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 13.8s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 348 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1058 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 348 mSolverCounterUnsat, 36 mSDtfsCounter, 1058 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 579 GetRequests, 434 SyntacticMatches, 13 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6971 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 3/15 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: [L537] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=2, nondetString={-1:0}] [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() [L521] i++ VAL [i=1, length=2, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) [L526] nondetString[length-1] = '\0' [L527] return nondetString; [L537] RET, EXPR build_nondet_String() [L537] char* p = build_nondet_String(); [L538] CALL cstrlen(p) [L531] const char *p = s; VAL [p={-1:0}, s={-1:0}, s={-1:0}] [L532] EXPR \read(*p) VAL [p={-1:0}, s={-1:0}, s={-1:0}] [L532] COND TRUE *p != '\0' [L533] p = p+2 VAL [p={-1:2}, s={-1:0}, s={-1:0}] [L532] \read(*p) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 132.1MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 585.44ms. Allocated memory is still 132.1MB. Free memory was 84.1MB in the beginning and 68.0MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.07ms. Allocated memory is still 132.1MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.06ms. Allocated memory is still 132.1MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 462.68ms. Allocated memory is still 132.1MB. Free memory was 64.6MB in the beginning and 100.6MB in the end (delta: -36.0MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * CodeCheck took 13913.43ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 139.7MB in the beginning and 69.3MB in the end (delta: 70.4MB). Peak memory consumption was 104.8MB. Max. memory is 16.1GB. * Witness Printer took 86.26ms. Allocated memory is still 201.3MB. Free memory was 69.3MB in the beginning and 67.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-24 22:55:57,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3726e140-5cb6-4f19-b263-2ce9469c77b0/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)