./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff_usafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9 --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 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 22:05:34,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 22:05:34,894 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-12-02 22:05:34,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 22:05:34,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 22:05:34,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 22:05:34,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 22:05:34,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 22:05:34,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 22:05:34,921 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 22:05:34,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 22:05:34,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 22:05:34,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 22:05:34,923 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 22:05:34,924 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 22:05:34,924 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 22:05:34,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 22:05:34,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 22:05:34,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 22:05:34,926 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 22:05:34,927 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 22:05:34,928 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 22:05:34,929 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 22:05:34,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 22:05:34,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:05:34,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 22:05:34,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 22:05:34,931 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 22:05:34,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 22:05:34,932 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_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 [2023-12-02 22:05:35,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 22:05:35,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 22:05:35,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 22:05:35,183 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 22:05:35,183 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 22:05:35,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2023-12-02 22:05:37,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 22:05:38,066 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 22:05:38,067 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/sv-benchmarks/c/array-memsafety/diff_usafe.c [2023-12-02 22:05:38,073 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/data/163cb5c72/fffdf6b4b5f945e3ac83f8815d066a89/FLAGa2ba180b4 [2023-12-02 22:05:38,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/data/163cb5c72/fffdf6b4b5f945e3ac83f8815d066a89 [2023-12-02 22:05:38,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 22:05:38,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 22:05:38,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 22:05:38,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 22:05:38,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 22:05:38,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c3b85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38, skipping insertion in model container [2023-12-02 22:05:38,098 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 22:05:38,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:05:38,281 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 22:05:38,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 22:05:38,310 INFO L206 MainTranslator]: Completed translation [2023-12-02 22:05:38,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38 WrapperNode [2023-12-02 22:05:38,311 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 22:05:38,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 22:05:38,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 22:05:38,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 22:05:38,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,346 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-12-02 22:05:38,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 22:05:38,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 22:05:38,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 22:05:38,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 22:05:38,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,364 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 22:05:38,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 22:05:38,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 22:05:38,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 22:05:38,374 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 22:05:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 22:05:38,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 22:05:38,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 22:05:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 22:05:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 22:05:38,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 22:05:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 22:05:38,519 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 22:05:38,521 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 22:05:38,683 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 22:05:38,719 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 22:05:38,719 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 22:05:38,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:05:38 BoogieIcfgContainer [2023-12-02 22:05:38,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 22:05:38,722 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 22:05:38,722 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 22:05:38,731 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 22:05:38,731 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:05:38" (1/1) ... [2023-12-02 22:05:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 22:05:38,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:05:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 20 states and 22 transitions. [2023-12-02 22:05:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-12-02 22:05:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 22:05:38,797 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:05:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:05:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 22:05:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 22:05:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 22:05:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 22 states and 25 transitions. [2023-12-02 22:05:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-12-02 22:05:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 22:05:38,995 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 22:05:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 22:05:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:05:39,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 22:05:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:05:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:05:39,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 22:05:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 22:05:39,093 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-12-02 22:05:39,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 10:05:39 ImpRootNode [2023-12-02 22:05:39,121 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 22:05:39,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 22:05:39,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 22:05:39,122 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 22:05:39,122 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:05:38" (3/4) ... [2023-12-02 22:05:39,123 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 22:05:39,170 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-02 22:05:39,170 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 22:05:39,171 INFO L158 Benchmark]: Toolchain (without parser) took 1080.02ms. Allocated memory is still 180.4MB. Free memory was 145.2MB in the beginning and 108.5MB in the end (delta: 36.7MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2023-12-02 22:05:39,172 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 22:05:39,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.91ms. Allocated memory is still 180.4MB. Free memory was 144.7MB in the beginning and 146.2MB in the end (delta: -1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 22:05:39,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.80ms. Allocated memory is still 180.4MB. Free memory was 146.2MB in the beginning and 145.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 22:05:39,173 INFO L158 Benchmark]: Boogie Preprocessor took 24.57ms. Allocated memory is still 180.4MB. Free memory was 145.0MB in the beginning and 143.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 22:05:39,174 INFO L158 Benchmark]: RCFGBuilder took 347.87ms. Allocated memory is still 180.4MB. Free memory was 143.4MB in the beginning and 129.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 22:05:39,175 INFO L158 Benchmark]: CodeCheck took 399.44ms. Allocated memory is still 180.4MB. Free memory was 128.8MB in the beginning and 110.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 22:05:39,175 INFO L158 Benchmark]: Witness Printer took 48.87ms. Allocated memory is still 180.4MB. Free memory was 110.6MB in the beginning and 108.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 22:05:39,178 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, 20 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; [L35] CALL diff(A, Alen, B, Blen, D) [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; VAL [A={5:6}, A={5:6}, Alen=1, B={2:4}, B={2:4}, Blen=1, D={3:7}, D={3:7}, \old(Alen)=1, \old(Blen)=1, i=0, k=0, l1=1, l2=1] [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 VAL [A={5:6}, A={5:6}, Alen=1, B={2:4}, B={2:4}, Blen=1, D={3:7}, D={3:7}, \old(Alen)=1, \old(Blen)=1, found=0, i=0, j=0, k=0, l1=1, l2=1] [L14] COND TRUE j < l2 && !found VAL [A={5:6}, A={5:6}, Alen=1, B={2:4}, B={2:4}, Blen=1, D={3:7}, D={3:7}, \old(Alen)=1, \old(Blen)=1, found=0, i=0, j=0, k=0, l1=1, l2=1] [L15] A[i] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 121.6MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.91ms. Allocated memory is still 180.4MB. Free memory was 144.7MB in the beginning and 146.2MB in the end (delta: -1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.80ms. Allocated memory is still 180.4MB. Free memory was 146.2MB in the beginning and 145.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.57ms. Allocated memory is still 180.4MB. Free memory was 145.0MB in the beginning and 143.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.87ms. Allocated memory is still 180.4MB. Free memory was 143.4MB in the beginning and 129.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 399.44ms. Allocated memory is still 180.4MB. Free memory was 128.8MB in the beginning and 110.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 48.87ms. Allocated memory is still 180.4MB. Free memory was 110.6MB in the beginning and 108.5MB 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! [2023-12-02 22:05:39,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c52cd46-5f34-495b-8516-4d71ef2394f1/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)