./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL --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 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:05:06,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:05:07,058 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-19 04:05:07,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:05:07,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:05:07,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:05:07,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:05:07,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:05:07,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:05:07,126 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:05:07,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:05:07,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:05:07,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:05:07,131 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:05:07,131 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:05:07,132 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:05:07,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:05:07,133 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:05:07,133 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:05:07,134 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:05:07,134 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:05:07,135 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:05:07,136 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:05:07,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:05:07,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:05:07,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:05:07,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:05:07,139 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:05:07,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:05:07,140 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_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153befabdb18c1c2f846632066e19b90cbc378dfb8679471b93a472fb2c83770 [2023-11-19 04:05:07,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:05:07,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:05:07,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:05:07,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:05:07,459 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:05:07,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2023-11-19 04:05:10,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:05:10,986 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:05:10,987 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/sv-benchmarks/c/array-memsafety/selectionsort_unsafe.c [2023-11-19 04:05:10,994 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/data/7221ac354/1a0980f4dafd4123bdc4acb5dfd076d0/FLAG57b2136b4 [2023-11-19 04:05:11,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/data/7221ac354/1a0980f4dafd4123bdc4acb5dfd076d0 [2023-11-19 04:05:11,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:05:11,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:05:11,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:05:11,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:05:11,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:05:11,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5582afb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11, skipping insertion in model container [2023-11-19 04:05:11,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,068 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:05:11,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:05:11,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:05:11,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:05:11,299 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:05:11,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11 WrapperNode [2023-11-19 04:05:11,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:05:11,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:05:11,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:05:11,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:05:11,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,342 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2023-11-19 04:05:11,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:05:11,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:05:11,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:05:11,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:05:11,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,368 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:05:11,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:05:11,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:05:11,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:05:11,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:05:11" (1/1) ... [2023-11-19 04:05:11,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:05:11,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:05:11,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:05:11,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:05:11,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:05:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:05:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:05:11,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:05:11,597 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:05:11,601 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:05:11,935 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:05:11,992 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:05:11,992 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:05:12,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:05:12 BoogieIcfgContainer [2023-11-19 04:05:12,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:05:12,004 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:05:12,004 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:05:12,017 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:05:12,018 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:05:12" (1/1) ... [2023-11-19 04:05:12,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:05:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:05:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 24 states and 25 transitions. [2023-11-19 04:05:12,086 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-11-19 04:05:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:05:12,089 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:05:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:05:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:05:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:05:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:05:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 26 states and 28 transitions. [2023-11-19 04:05:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-11-19 04:05:12,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:05:12,351 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:05:12,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:05:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:05:12,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:05:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:05:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:05:12,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:05:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:05:12,442 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-19 04:05:12,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:05:12 ImpRootNode [2023-11-19 04:05:12,471 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:05:12,472 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:05:12,472 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:05:12,472 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:05:12,473 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:05:12" (3/4) ... [2023-11-19 04:05:12,474 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:05:12,522 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 04:05:12,522 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:05:12,523 INFO L158 Benchmark]: Toolchain (without parser) took 1493.96ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 89.0MB in the beginning and 130.4MB in the end (delta: -41.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:05:12,524 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:05:12,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.07ms. Allocated memory is still 136.3MB. Free memory was 88.6MB in the beginning and 78.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 04:05:12,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.02ms. Allocated memory is still 136.3MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:05:12,526 INFO L158 Benchmark]: Boogie Preprocessor took 29.38ms. Allocated memory is still 136.3MB. Free memory was 77.3MB in the beginning and 76.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:05:12,527 INFO L158 Benchmark]: RCFGBuilder took 629.23ms. Allocated memory is still 136.3MB. Free memory was 76.0MB in the beginning and 61.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:05:12,528 INFO L158 Benchmark]: CodeCheck took 466.97ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 61.3MB in the beginning and 131.4MB in the end (delta: -70.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:05:12,528 INFO L158 Benchmark]: Witness Printer took 50.59ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 130.4MB in the end (delta: 980.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:05:12,532 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, 24 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 9 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, 0.1s 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: [L23] int *a; [L24] int array_size = __VERIFIER_nondet_int(); [L25] CALL SelectionSort(a, array_size) [L5] int i; [L6] i = 0 VAL [\old(array_size)=2, a={3:4}, a={3:4}, array_size=2, i=0] [L6] COND TRUE i < array_size - 1 [L8] int j, min, temp; [L9] min = i [L10] j = i+1 VAL [\old(array_size)=2, a={3:4}, a={3:4}, array_size=2, i=0, j=1, min=0] [L10] COND TRUE j < array_size VAL [\old(array_size)=2, a={3:4}, a={3:4}, array_size=2, i=0, j=1, min=0] [L12] a[j] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.07ms. Allocated memory is still 136.3MB. Free memory was 88.6MB in the beginning and 78.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.02ms. Allocated memory is still 136.3MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.38ms. Allocated memory is still 136.3MB. Free memory was 77.3MB in the beginning and 76.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 629.23ms. Allocated memory is still 136.3MB. Free memory was 76.0MB in the beginning and 61.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 466.97ms. Allocated memory was 136.3MB in the beginning and 169.9MB in the end (delta: 33.6MB). Free memory was 61.3MB in the beginning and 131.4MB in the end (delta: -70.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.59ms. Allocated memory is still 169.9MB. Free memory was 131.4MB in the beginning and 130.4MB in the end (delta: 980.9kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 04:05:12,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9fd9332-2d66-430d-beec-7fab3f13227e/bin/ukojak-verify-G8NBE6pJGL/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)