./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/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_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/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 32bit --witnessprinter.graph.data.programhash 1fa4bda6bd30ba2cdf5e016e12b6593fa4b1ef45b4dc13eb01e28da7c534ab67 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-06 03:43:21,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-06 03:43:21,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2024-12-06 03:43:21,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-06 03:43:21,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-06 03:43:21,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-06 03:43:21,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-06 03:43:21,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-06 03:43:21,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-06 03:43:21,507 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-06 03:43:21,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-06 03:43:21,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:43:21,507 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-06 03:43:21,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-06 03:43:21,508 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-06 03:43:21,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-06 03:43:21,508 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_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa4bda6bd30ba2cdf5e016e12b6593fa4b1ef45b4dc13eb01e28da7c534ab67 [2024-12-06 03:43:21,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-06 03:43:21,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-06 03:43:21,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-06 03:43:21,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-06 03:43:21,749 INFO L274 PluginConnector]: CDTParser initialized [2024-12-06 03:43:21,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2024-12-06 03:43:24,333 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/data/2174d236a/e695e1363b9948d592f6a6532dc30972/FLAG5f7774e67 [2024-12-06 03:43:24,572 INFO L384 CDTParser]: Found 1 translation units. [2024-12-06 03:43:24,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2024-12-06 03:43:24,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/data/2174d236a/e695e1363b9948d592f6a6532dc30972/FLAG5f7774e67 [2024-12-06 03:43:24,920 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/data/2174d236a/e695e1363b9948d592f6a6532dc30972 [2024-12-06 03:43:24,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-06 03:43:24,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-06 03:43:24,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-06 03:43:24,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-06 03:43:24,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-06 03:43:24,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:43:24" (1/1) ... [2024-12-06 03:43:24,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496bf79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:24, skipping insertion in model container [2024-12-06 03:43:24,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 03:43:24" (1/1) ... [2024-12-06 03:43:24,951 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-06 03:43:25,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:43:25,180 INFO L200 MainTranslator]: Completed pre-run [2024-12-06 03:43:25,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-06 03:43:25,237 INFO L204 MainTranslator]: Completed translation [2024-12-06 03:43:25,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25 WrapperNode [2024-12-06 03:43:25,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-06 03:43:25,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-06 03:43:25,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-06 03:43:25,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-06 03:43:25,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,256 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,274 INFO L138 Inliner]: procedures = 118, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2024-12-06 03:43:25,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-06 03:43:25,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-06 03:43:25,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-06 03:43:25,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-06 03:43:25,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,291 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,297 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-06 03:43:25,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-06 03:43:25,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-06 03:43:25,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-06 03:43:25,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-06 03:43:25,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-06 03:43:25,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-06 03:43:25,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-06 03:43:25,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-06 03:43:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-06 03:43:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-06 03:43:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-06 03:43:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-06 03:43:25,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-06 03:43:25,426 INFO L234 CfgBuilder]: Building ICFG [2024-12-06 03:43:25,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-06 03:43:25,542 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-12-06 03:43:25,542 INFO L283 CfgBuilder]: Performing block encoding [2024-12-06 03:43:25,584 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-06 03:43:25,584 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-06 03:43:25,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:43:25 BoogieIcfgContainer [2024-12-06 03:43:25,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-06 03:43:25,585 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-06 03:43:25,585 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-06 03:43:25,595 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-06 03:43:25,595 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:43:25" (1/1) ... [2024-12-06 03:43:25,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-06 03:43:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 22 states and 24 transitions. [2024-12-06 03:43:25,648 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-12-06 03:43:25,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:43:25,650 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:25,820 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 03:43:25,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2024-12-06 03:43:25,868 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-12-06 03:43:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:43:25,868 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:25,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:26,085 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 03:43:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:26,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 23 states and 29 transitions. [2024-12-06 03:43:26,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-12-06 03:43:26,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:43:26,387 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:26,615 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 03:43:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2024-12-06 03:43:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2024-12-06 03:43:26,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-06 03:43:26,961 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:27,131 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 03:43:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2024-12-06 03:43:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2024-12-06 03:43:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 03:43:27,610 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:27,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:27,669 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 03:43:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 26 states and 38 transitions. [2024-12-06 03:43:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2024-12-06 03:43:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-06 03:43:27,719 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:27,867 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 03:43:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 29 states and 47 transitions. [2024-12-06 03:43:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 47 transitions. [2024-12-06 03:43:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 03:43:28,554 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 32 states and 57 transitions. [2024-12-06 03:43:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 57 transitions. [2024-12-06 03:43:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-06 03:43:30,289 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:30,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 34 states and 60 transitions. [2024-12-06 03:43:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 60 transitions. [2024-12-06 03:43:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:43:31,417 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:31,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:31,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:32,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 35 states and 63 transitions. [2024-12-06 03:43:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 63 transitions. [2024-12-06 03:43:32,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:43:32,075 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-06 03:43:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:32,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 33 states and 60 transitions. [2024-12-06 03:43:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2024-12-06 03:43:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-06 03:43:32,121 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:32,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 36 states and 67 transitions. [2024-12-06 03:43:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 67 transitions. [2024-12-06 03:43:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 03:43:33,450 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:33,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:34,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 38 states and 80 transitions. [2024-12-06 03:43:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 80 transitions. [2024-12-06 03:43:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 03:43:35,531 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:35,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:37,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 39 states and 82 transitions. [2024-12-06 03:43:37,060 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 82 transitions. [2024-12-06 03:43:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-06 03:43:37,060 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:37,256 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 03:43:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 43 states and 88 transitions. [2024-12-06 03:43:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 88 transitions. [2024-12-06 03:43:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 03:43:37,972 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:37,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-06 03:43:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-06 03:43:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-06 03:43:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 27 states and 31 transitions. [2024-12-06 03:43:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-12-06 03:43:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-06 03:43:39,014 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-06 03:43:39,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-06 03:43:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:43:39,025 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:43:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:43:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:43:39,069 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-06 03:43:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-06 03:43:39,092 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2024-12-06 03:43:39,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 06.12 03:43:39 ImpRootNode [2024-12-06 03:43:39,116 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-06 03:43:39,117 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-06 03:43:39,117 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-06 03:43:39,117 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-06 03:43:39,118 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 03:43:25" (3/4) ... [2024-12-06 03:43:39,119 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-06 03:43:39,156 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 8. [2024-12-06 03:43:39,199 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-06 03:43:39,199 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-06 03:43:39,199 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-06 03:43:39,200 INFO L158 Benchmark]: Toolchain (without parser) took 14277.35ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 91.7MB in the beginning and 149.5MB in the end (delta: -57.7MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2024-12-06 03:43:39,200 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 73.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:43:39,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.60ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 75.1MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 03:43:39,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:43:39,201 INFO L158 Benchmark]: Boogie Preprocessor took 23.84ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 72.6MB in the end (delta: 880.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:43:39,201 INFO L158 Benchmark]: RCFGBuilder took 284.90ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 57.6MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-06 03:43:39,202 INFO L158 Benchmark]: CodeCheck took 13531.11ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 57.6MB in the beginning and 154.4MB in the end (delta: -96.8MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2024-12-06 03:43:39,202 INFO L158 Benchmark]: Witness Printer took 82.41ms. Allocated memory is still 234.9MB. Free memory was 154.4MB in the beginning and 149.5MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-06 03:43:39,203 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: 13.5s, OverallIterations: 16, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 314 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 285 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 471 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1968 IncrementalHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 471 mSolverCounterUnsat, 12 mSDtfsCounter, 1968 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 639 SyntacticMatches, 24 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11909 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 5/20 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: [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={24188:0}] [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() [L521] i++ VAL [i=1, length=2, nondetString={24188:0}] [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={24188:0}] [L532] EXPR \read(*p) VAL [p={24188:0}] [L532] COND TRUE *p != '\0' [L533] p = p+2 VAL [p={24188:2}] [L532] \read(*p) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory was 73.2MB in the beginning and 73.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.60ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 75.1MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.84ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 72.6MB in the end (delta: 880.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.90ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 57.6MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 13531.11ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 57.6MB in the beginning and 154.4MB in the end (delta: -96.8MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 82.41ms. Allocated memory is still 234.9MB. Free memory was 154.4MB in the beginning and 149.5MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-12-06 03:43:39,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7763b7de-a4f7-4b2c-b7a1-a604e1326ace/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)