./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcat_short.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b --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 0.3.0-dev-d790fec [2024-12-06 03:48:42,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 03:48:42,834 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2024-12-06 03:48:42,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 03:48:42,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 03:48:42,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 03:48:42,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 03:48:42,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 03:48:42,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 03:48:42,857 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 03:48:42,858 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 03:48:42,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:48:42,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 03:48:42,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 03:48:42,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b 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 [2024-12-06 03:48:43,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 03:48:43,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 03:48:43,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 03:48:43,075 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 03:48:43,076 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 03:48:43,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/termination-dietlibc/strcat_short.i [2024-12-06 03:48:45,648 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/data/6d2aff46c/b61847cec8c241569a176a737c67034e/FLAGe2c85f86e [2024-12-06 03:48:45,894 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 03:48:45,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/sv-benchmarks/c/termination-dietlibc/strcat_short.i [2024-12-06 03:48:45,904 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/data/6d2aff46c/b61847cec8c241569a176a737c67034e/FLAGe2c85f86e [2024-12-06 03:48:46,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/data/6d2aff46c/b61847cec8c241569a176a737c67034e [2024-12-06 03:48:46,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 03:48:46,240 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 03:48:46,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 03:48:46,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 03:48:46,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 03:48:46,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71aa7ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46, skipping insertion in model container [2024-12-06 03:48:46,245 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 03:48:46,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:48:46,475 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 03:48:46,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:48:46,527 INFO L204 MainTranslator]: Completed translation [2024-12-06 03:48:46,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46 WrapperNode [2024-12-06 03:48:46,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 03:48:46,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 03:48:46,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 03:48:46,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 03:48:46,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,559 INFO L138 Inliner]: procedures = 114, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2024-12-06 03:48:46,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 03:48:46,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 03:48:46,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 03:48:46,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 03:48:46,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,574 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 03:48:46,583 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 03:48:46,584 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 03:48:46,584 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 03:48:46,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:48:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 03:48:46,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 03:48:46,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 03:48:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 03:48:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 03:48:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-06 03:48:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 03:48:46,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 03:48:46,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 03:48:46,705 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 03:48:46,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 03:48:46,877 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-12-06 03:48:46,878 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 03:48:46,905 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 03:48:46,905 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-06 03:48:46,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:48:46 BoogieIcfgContainer [2024-12-06 03:48:46,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 03:48:46,906 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 03:48:46,906 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 03:48:46,916 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 03:48:46,916 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:48:46" (1/1) ... [2024-12-06 03:48:46,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 03:48:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 28 states and 35 transitions. [2024-12-06 03:48:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-12-06 03:48:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:48:46,964 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:48:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:48:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 29 states and 38 transitions. [2024-12-06 03:48:47,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-12-06 03:48:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:48:47,100 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:47,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:48:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:48:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 37 transitions. [2024-12-06 03:48:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-12-06 03:48:47,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:48:47,191 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:47,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:48:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:48:47,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:47,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2024-12-06 03:48:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2024-12-06 03:48:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 03:48:47,614 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:47,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:48:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:48:47,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 27 states and 35 transitions. [2024-12-06 03:48:47,865 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-12-06 03:48:47,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:48:47,865 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:47,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:48:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:48:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 27 states and 34 transitions. [2024-12-06 03:48:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-12-06 03:48:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:48:47,944 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:48:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:48:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:48:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2024-12-06 03:48:48,041 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2024-12-06 03:48:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:48:48,041 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:48:48,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:48:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:48:48,057 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:48:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:48:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:48:48,099 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:48:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:48:48,131 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2024-12-06 03:48:48,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 03:48:48 ImpRootNode [2024-12-06 03:48:48,152 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 03:48:48,153 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 03:48:48,153 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 03:48:48,153 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 03:48:48,154 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:48:46" (3/4) ... [2024-12-06 03:48:48,154 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 03:48:48,190 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 4. [2024-12-06 03:48:48,229 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 03:48:48,230 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 03:48:48,230 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 03:48:48,231 INFO L158 Benchmark]: Toolchain (without parser) took 1990.52ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 84.1MB in the end (delta: 7.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2024-12-06 03:48:48,231 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 71.5MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:48:48,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.46ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 75.4MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 03:48:48,231 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.81ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 73.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:48:48,232 INFO L158 Benchmark]: Boogie Preprocessor took 22.82ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:48:48,232 INFO L158 Benchmark]: RCFGBuilder took 322.21ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 56.8MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 03:48:48,232 INFO L158 Benchmark]: CodeCheck took 1246.16ms. Allocated memory is still 117.4MB. Free memory was 56.6MB in the beginning and 87.9MB in the end (delta: -31.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:48:48,233 INFO L158 Benchmark]: Witness Printer took 77.02ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 84.1MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:48:48,234 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, 28 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, 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, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.3s 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, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s 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, ConComCheckerStatistics: 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={2:0}, 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={2:0}, out={3:0}, out_end=-1] [L531] out[out_end]=0 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory was 71.5MB in the beginning and 71.5MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.46ms. Allocated memory is still 117.4MB. Free memory was 92.0MB in the beginning and 75.4MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.81ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 73.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.82ms. Allocated memory is still 117.4MB. Free memory was 73.8MB in the beginning and 72.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 322.21ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 56.8MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1246.16ms. Allocated memory is still 117.4MB. Free memory was 56.6MB in the beginning and 87.9MB in the end (delta: -31.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 77.02ms. Allocated memory is still 117.4MB. Free memory was 87.9MB in the beginning and 84.1MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 03:48:48,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50eccbb1-66f3-49cb-8539-5759c2171367/bin/ukojak-verify-CZk0znPC7b/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)