./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcat_short.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcat_short.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk --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 64bit --witnessprinter.graph.data.programhash 158b8eceb7a2c63c12c3387b55d354bdd17828549d94e13b163dfb4b9ee8e19c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:26:09,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:26:09,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2024-11-08 23:26:09,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:26:09,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:26:10,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:26:10,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:26:10,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:26:10,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:26:10,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:26:10,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:26:10,029 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 23:26:10,030 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 23:26:10,030 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 23:26:10,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:26:10,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:26:10,032 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 23:26:10,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:26:10,033 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:26:10,034 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:26:10,034 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:26:10,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:26:10,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:26:10,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:26:10,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:26:10,036 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:26:10,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:26:10,037 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_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158b8eceb7a2c63c12c3387b55d354bdd17828549d94e13b163dfb4b9ee8e19c [2024-11-08 23:26:10,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:26:10,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:26:10,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:26:10,367 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:26:10,367 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:26:10,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/termination-dietlibc/strcat_short.i Unable to find full path for "g++" [2024-11-08 23:26:12,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:26:12,962 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:26:12,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/sv-benchmarks/c/termination-dietlibc/strcat_short.i [2024-11-08 23:26:12,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/data/117961b79/80b9036434ff4625ad409a48809272a7/FLAGb9135a919 [2024-11-08 23:26:12,994 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/data/117961b79/80b9036434ff4625ad409a48809272a7 [2024-11-08 23:26:12,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:26:12,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:26:13,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:26:13,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:26:13,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:26:13,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:26:12" (1/1) ... [2024-11-08 23:26:13,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4453abcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13, skipping insertion in model container [2024-11-08 23:26:13,011 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:26:12" (1/1) ... [2024-11-08 23:26:13,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:26:13,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:26:13,529 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:26:13,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:26:13,640 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:26:13,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13 WrapperNode [2024-11-08 23:26:13,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:26:13,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:26:13,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:26:13,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:26:13,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,670 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,696 INFO L138 Inliner]: procedures = 114, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2024-11-08 23:26:13,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:26:13,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:26:13,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:26:13,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:26:13,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,715 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,729 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:26:13,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:26:13,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:26:13,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:26:13,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:26:13" (1/1) ... [2024-11-08 23:26:13,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:26:13,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:26:13,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:26:13,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:26:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 23:26:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 23:26:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 23:26:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 23:26:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:26:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:26:13,906 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:26:13,908 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:26:14,174 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-08 23:26:14,174 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:26:14,227 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:26:14,228 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 23:26:14,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:26:14 BoogieIcfgContainer [2024-11-08 23:26:14,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:26:14,232 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:26:14,232 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:26:14,243 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:26:14,244 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:26:14" (1/1) ... [2024-11-08 23:26:14,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:26:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 29 states and 36 transitions. [2024-11-08 23:26:14,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-08 23:26:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-08 23:26:14,306 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:26:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:26:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2024-11-08 23:26:14,574 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-08 23:26:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-08 23:26:14,576 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:26:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:26:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 29 states and 38 transitions. [2024-11-08 23:26:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-11-08 23:26:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-08 23:26:14,870 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:14,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:26:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:26:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 37 transitions. [2024-11-08 23:26:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-08 23:26:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-08 23:26:15,509 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:15,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:26:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:26:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 28 states and 36 transitions. [2024-11-08 23:26:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2024-11-08 23:26:15,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 23:26:15,980 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:26:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:26:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 28 states and 35 transitions. [2024-11-08 23:26:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-08 23:26:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 23:26:16,096 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:26:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:26:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:26:16,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 27 states and 34 transitions. [2024-11-08 23:26:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-08 23:26:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-08 23:26:16,273 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:26:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:26:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:26:16,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:26:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:26:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:26:16,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:26:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:26:16,422 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2024-11-08 23:26:16,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:26:16 ImpRootNode [2024-11-08 23:26:16,464 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:26:16,466 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:26:16,466 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:26:16,466 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:26:16,467 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:26:14" (3/4) ... [2024-11-08 23:26:16,468 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-08 23:26:16,523 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-08 23:26:16,523 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:26:16,524 INFO L158 Benchmark]: Toolchain (without parser) took 3525.13ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 98.4MB in the beginning and 144.5MB in the end (delta: -46.0MB). Peak memory consumption was 439.5kB. Max. memory is 16.1GB. [2024-11-08 23:26:16,525 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 136.3MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:26:16,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.07ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 79.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 23:26:16,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.62ms. Allocated memory is still 136.3MB. Free memory was 79.5MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:26:16,527 INFO L158 Benchmark]: Boogie Preprocessor took 33.76ms. Allocated memory is still 136.3MB. Free memory was 77.5MB in the beginning and 75.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:26:16,529 INFO L158 Benchmark]: RCFGBuilder took 498.85ms. Allocated memory is still 136.3MB. Free memory was 75.9MB in the beginning and 59.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 23:26:16,530 INFO L158 Benchmark]: CodeCheck took 2232.53ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 58.6MB in the beginning and 146.6MB in the end (delta: -87.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:26:16,531 INFO L158 Benchmark]: Witness Printer took 57.76ms. Allocated memory is still 180.4MB. Free memory was 146.6MB in the beginning and 144.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:26:16,534 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, 29 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 184 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 18 mSDtfsCounter, 184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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: [L522] int in_len = __VERIFIER_nondet_int(); [L523] COND FALSE !(in_len < 1) [L524] char* in = __builtin_alloca (in_len); VAL [in={3:0}, in_len=1] [L525] in[in_len-1]=0 [L526] int out_len = __VERIFIER_nondet_int(); [L527] COND FALSE !(out_len < 1) [L528] int out_end = __VERIFIER_nondet_int(); [L529] COND FALSE !(out_len < out_end+in_len) [L530] char* out = __builtin_alloca (out_len); VAL [in={3:0}, out={2:0}, out_end=-1] [L531] out[out_end]=0 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 136.3MB. Free memory is still 81.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.07ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 79.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.62ms. Allocated memory is still 136.3MB. Free memory was 79.5MB in the beginning and 77.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.76ms. Allocated memory is still 136.3MB. Free memory was 77.5MB in the beginning and 75.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.85ms. Allocated memory is still 136.3MB. Free memory was 75.9MB in the beginning and 59.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 2232.53ms. Allocated memory was 136.3MB in the beginning and 180.4MB in the end (delta: 44.0MB). Free memory was 58.6MB in the beginning and 146.6MB in the end (delta: -87.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 57.76ms. Allocated memory is still 180.4MB. Free memory was 146.6MB in the beginning and 144.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-08 23:26:16,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91fa72f-310b-484f-9abd-167efe54ef2d/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)